Tenth Joint BER II and BESSY II User Meeting, December 05 – 07, 2018, Berlin (Germany)
– J. Bombsch, E. Avancini, R. Carron, E. Handick, R. Garcia-Diez, C. Hartmann, R. Félix, S. Ueda, R. G. Wilks, S. Buecheler, A. N. Tiwari, and M. Bär, Effect of NaF and NaF/RbF post-deposition treatments on the Cu(In,Ga)Se2 surface and the deeply buried Cu(In,Ga)Se2/Mo interface structure, VISUAL PRESENTATION
nanoGe Fall Meeting, October 22 – 26, 2018, Torremolinos (Spain)
– N. Nicoara, R. Manaligod, P. Jackson, D. Hariskos, W. Witte, and S. Sadewasser, Impact of alkali post deposition treatments on the grain boundary properties in Cu(In,Ga)Se2, ORAL PRESENTATION
CECAM-Workshop; Reliable and quantitative prediction of defect properties in Ga-based semiconductors, October 08 – 12, 2018, Bremen (Germany)
– H.-P. Komsa, Light vs heavy alkali metal impurities in CIGS solar cells, ORAL PRESENTATION
Parallel Event at 35th EU PVSEC, Horizon 2020 projects: Backing the EU PV Industry, September 27, 2018, Brussels (Belgium)
– W. Witte, Sharc25 Project: Super high efficiency Cu(In,Ga)Se2 thin-film solar cells approaching 25%, ORAL PRESENTATION
35th EU PVSEC, September 24 – 28, 2018, Brussels (Belgium)
– W. Witte, P. Jackson, D. Hariskos, F. Kessler, M. Powalla, S. Buecheler, R. Carron, E. Avancini, B. Bissig, T. P. Weiss, J. Löckinger, S. Siebentritt, F. Werner, M. H. Wolter, P. Pareige, S. Duguay, E. Cadel, C. Castro, A. Vilalta-Clemente, R. Menozzi, G. Sozzi, S. Di Napoli, E. Bourgeois, G. Degutis, R. Gehlhaar, M. Bär, R. G. Wilks, T. Kunze, E. Handick, J. Bombsch, S. Sadewasser, N. Nicoara, M. J. Puska, M. Malitckaya, H.-P. Komsa, V. Havu, P. Reinhard, B. Dimmler, R. Wächter, and A. N. Tiwari, Characterization and New Concepts Applied to Cu(In,Ga)Se2 Solar Cells: Advancements through EU Project Sharc25, ORAL PRESENTATION
– T. Feurer, T. Moser, T. P. Weiss, E. Avancini, S. Buecheler, and A.N. Tiwari, Narrow Bandgap CI(G)S for Tandem Application, ORAL PRESENTATION
E-MRS Spring Meeting 2018, June 18 – 22, 2018, Strasbourg (France)
– M. H. Wolter, D. Siopa, P. Dale, B. Bissig, E. Avancini, R. Carron, S. Buecheler, P. Jackson, D. Hariskos, W. Witte, and S. Siebentritt, Removing interference effects in photoluminescence of Cu(In,Ga)Se2 thin films to investigate potential fluctuations, ORAL PRESENTATION
– M. Malitckaya, H.-P. Komsa, V. Havu, and M. J. Puska, DFT calculations on role of alkali metal atoms in chalcopyrite-based solar cells, ORAL PRESENTATION
– R. Wuerz, W. Hempel, and P. Jackson, Diffusion of Rb in polycrystalline Cu(In,Ga)Se2 layers and effect of Rb on solar cell parameters of Cu(In,Ga)Se2 solar cells, ORAL PRESENTATION
– J. Bombsch, E. Avancini, R. Carron, T. Kunze, E. Handick, R. Garcia-Diez, Y. Zhang, R. Félix, R. G. Wilks, S. Buecheler, A. N. Tiwari, and M. Bär, Effect of NaF and NaF/RbF post-deposition treatments on the CdS/Cu(In,Ga)Se2 thin-film solar cell interface structure, VISUAL PRESENTATION
– R. Carron, E. Avancini, T. Feurer, B. Bissig, P. A. Losio, R. Figi, C. Schreiner, M. Bürki, E. Bourgeois, Z. Remes, M. Nesladek, S. Buecheler, and A. N. Tiwari, Refractive Indices of Layers and Optical Simulations of Cu(In,Ga)Se2 Solar Cells, ORAL PRESENTATION
– E. Avancini, R. Carron, S. Nishiwaki, D. Keller, R. Erni, Y. Arroyo, A. Priebe, T. Feurer, R. Menozzi, S. Di Napoli, G. Sozzi, S. Buecheler, and A. N. Tiwari, Void formation in low-temperature co-evaporated Cu(In,Ga)Se2 thin films and consequences for solar cell performance, ORAL PRESENTATION
– J. Löckinger, R. Carron, S. Nishiwaki, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, ALD-metal oxide buffer layer in CIGS solar cells, ORAL PRESENTATION
– T. Feurer, S. Pisoni, T. P. Weiss, E. Avancini, R. Carron, J. Löckinger, S. Buecheler, and A. N. Tiwari, Low band gap Cu(In,Ga)Se2 solar cells for CIGS/Perovskite tandem devices, ORAL PRESENTATION
– R. Carron, E. Avancini, T. Feurer, S. Nishiwaki, S. Pisoni, F. Fu, C. Andres, M. Lingg, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, Bandgap of solar cell absorbers: a comparison of various determination methods, VISUAL PRESENTATION
– T. P. Weiss, B. Bissig, T. Feurer, R. Carron, S. Buecheler, and A. N. Tiwari, On the estimation of surface recombination velocities on high efficiency CIS and single graded back-passivated CIGS, VISUAL PRESENTATION
IW-CIGSTech-9, June 18, 2018, Stuttgart (Germany)
– W. Witte, R&D for advancements in science and technology of CIGS (EU-Sharc25 project), ORAL PRESENTATION
WCPEC-7, June 10 – 15, 2018, Waikoloa, HI (USA).
– N. Nicoara, P. Jackson, D. Hariskos, W. Witte, and S. Sadewasser, Modification of electronic grain boundary properties of Cu(In,Ga)Se2 by alkali-fluoride post deposition treatments, ORAL PRESENTATION
– G. Sozzi, S. Di Napoli, R. Menozzi, T. P. Weiss, S. Buecheler, and A. N. Tiwari, Interpretation of admittance signatures in Cu(In,Ga)Se2 solar cells, ORAL PRESENTATION
– G. Sozzi, S. Di Napoli, M. Carrisi, and R. Menozzi, Assessing the impact of rear point-contact/passivation on CIGS cells with different absorber thickness and grading, VISUAL PRESENTATION
DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM) und EPS-CMD27, March 11 – 16, 2018, Berlin (Germany)
– M. Malitckaya, H.-P. Komsa, V. Havu, and M. Puska, Structural and electronic properties of AlkInSe2/CuInSe2 (Alk = K, Rb, Cs) interfaces from density functional theory calculations, ORAL PRESENTATION
H2020 1st Coordinators´ Workshop on Photovoltaics, February 06, 2018, Brussels (Belgium)
– W. Witte, Sharc25, ORAL PRESENTATION
2017
Ninth Joint BER II and BESSY II User Meeting, December 13 – 15, 2017, Berlin (Germany)
– J. Bombsch, E. Avancini, R. Carron, T. Kunze, E. Handick, R. Garcia-Diez, Y. Zhang, R. Félix, R. G. Wilks, S. Buecheler, and M. Bär, Impact of alkali fluoride post-deposition treatment on Cu(In,Ga)Se2/CdS interface formation investigated by hard X-ray photoelectron spectroscopy, VISUAL PRESENTATION
European workshop on nanotechnologies & advanced materials for photovoltaics & concentrated solar power, October 24 – 25, 2017, Brussels (Belgium)
– W. Witte, Sharc25 project:Super high efficiency Cu(In,Ga)Se2 thin-film solar cells approaching 25%, ORAL PRESENTATION
33rd EU PVSEC, September 25 – 29, 2017, Amsterdam (The Netherlands)
– W. Witte, P. Jackson, D. Hariskos, F. Kessler, M. Powalla, S. Buecheler, R. Carron, E. Avancini, B. Bissig, T. Weiss, S. Siebentritt, F. Werner, M. H. Wolter, P. Pareige, P. Moguerou, S. Duguay, E. Cadel, C. Castro, A. Vilalta-Clemente, R. Menozzi, G. Sozzi, S. Di Napoli, E. Bourgeois, G. Degutis, M. Bär, R. G. Wilks, T. Kunze, S. Sadewasser, N. Nicoara, M. Puska, M. Fedina, H.-P. Komsa, V. Havu, P. Reinhard, B. Dimmler, R. Wächter, and A. N. Tiwari, Influence of post-deposition treatment with alkali elements on bulk and interface properties of high efficiency Cu(In,Ga)Se2 solar cells: Results of the EU project Sharc25, ORAL PRESENTATION
NEXTGEN 2017, Nanotechnology and Next Generation High-Efficiency Photovoltaics International School and Workshop, September 12 – 15, 2017, Palma, Mallorca (Spain)
– W. Witte, Measures to increase CIGS cell efficiency towards 25%, ORAL PRESENTATION
– M. H. Wolter, B. Bissig, P. Reinhard, E. Avancini, R. Carron, S. Buecheler, W. Witte, P. Jackson, and S. Siebentritt, Influence of interference and alkali post-deposition treatment on the quasi-Fermi level splitting of Cu(In,Ga)Se2 thin films, ORAL PRESENTATION
– A. Vilalta-Clemente, C. Castro, S. Duguay, E. Cadel, P. Pareige, P. Jackson, R. Wuerz, D. Hariskos, and W. Witte, Rb alkali distribution in Cu(In,Ga)Se2 solar cells on a nanometer scale, ORAL PRESENTATION
44th IEEE PVSC, June 25 – 30, 2017, Washington D.C. (USA)
– N. Nicoara, P. Jackson, D. Hariskos, T. Lepetit, S. Harel, L. Arzel, W. Witte, N. Barreau, and S. Sadewasser, Nanoscale electronic properties of Cu(In,Ga)Se2 absorber surfaces and absorber/buffer interfaces after alkali post-deposition treatments, ORAL PRESENTATION
– G. Sozzi, S. Di Napoli, R. Menozzi, F. Werner, S. Siebentritt, P. Jackson, and W. Witte, Influence of conduction band offsets at window/buffer and buffer/absorber interfaces on the roll-over of J-V curves of CIGS solar cells, ORAL PRESENTATION
– M. H. Wolter, B. Bissig, E. Avancini, R. Carron, S. Buecheler, and S. Siebentritt, Influence of sodium and rubidium post-deposition treatment on the quasi-Fermi level splitting of Cu(In,Ga)Se2 thin films, ORAL PRESENTATION
IW-CIGSTech-8, May 30, 2017, Stuttgart (Germany)
– W. Witte, P. Jackson, D. Hariskos, F. Kessler, M. Powalla, S. Buecheler, R. Carron, E. Avancini, B. Bissig, T. Weiss, S. Siebentritt, F. Werner, M. H. Wolter, P. Pareige, P. Moguerou, S. Duguay, E. Cadel, C. Castro, A. Vilalta-Clemente, R. Menozzi, G. Sozzi, S. Di Napoli, E. Bourgeois, G. Degutis, M. Bär, R. G. Wilks, T. Kunze, S. Sadewasser, N. Nicoara, M. Puska, M. Fedina, H.-P. Komsa, V. Havu, P. Reinhard, B. Dimmler, R. Wächter, and A. N. Tiwari, In-depth characterization of high efficiency Cu(In,Ga)Se2 solar cells: Results of the EU project Sharc25, VISUAL PRESENTATION
E-MRS Spring Meeting, May 22 – 26, 2017, Strasbourg (France)
– W. Witte, R. Carron, D. Hariskos, F. Fu, R. Menner, and S. Buecheler, Indium zinc oxide and hydrogen-doped indium oxide window layers combined with Zn(O,S) and CdS buffers for Cu(In,Ga)Se2 thin-film solar cells, ORAL PRESENTATION
– A. Vilalta-Clemente, C. Castro, M. Raghuwanshi, S. Duguay, E. Cadel, P. Pareige, P. Jackson, D. Hariskos, and W. Witte, Distribution of alkali elements in Cu(In,Ga)Se2 solar cells on a nanometer scale, ORAL PRESENTATION
MRS Spring Meeting, April 17 – 21, 2017, Phoenix, AZ (USA)
– T. Kunze, P. Jackson, D. Hariskos, A. Siebert, C. Hartmann, R. Felix Duarte, X. Kozina, D. Gerlach, Y. Yamashita, T. Chikyow, S. Ueda, R. Wilks, W. Witte, and M. Baer, Impact of different alkali post deposition treatments on the formation of the Zn(O,S)/Cu(In,Ga)Se2 interface, ORAL PRESENTATION
– N. Nicoara, P. Jackson, D. Hariskos, W. Witte, and S. Sadewasser, Comparison of the interface formation of Cu(In,Ga)Se2 with RbF post-deposition treatment and CdS and ZnS buffer layers, ORAL PRESENTATION
– T. Weiss, S. Nishiwaki, B. Bissig, E. Avancini, S. Buecheler, and A. Tiwari, Voltage Dependent Admittance Spectroscopy for the Detection of near Interface Defect States and the Extraction of the Doping Density, ORAL PRESENTATION
– E. Avancini, S. Nishiwaki, D. Keller, T. Weiss, R. Carron, T. Feurer, A. Filippin, B. Bissig, S. Buecheler, A. Tiwari, Structural Defects and Lateral Composition Inhomogeneities in Cu(In,Ga)Se2 Layers Grown by Multistage Co-Evaporation, ORAL PRESENTATION
DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), March 19 – 24, 2017, Dresden (Germany)
– M. Fedina, H.-P. Komsa, V. Havu, and M. Puska, First-principles modeling the alkali-metal post-deposition treatment of CIGS solar cells, ORAL PRESENTATION
2016
Eighth Joint BER II and BESSY II User Meeting, December 7 – 9, 2016, Berlin (Germany)
– T. Kunze, P. Jackson, D. Hariskos, A. Siebert, C. Hartmann, X. Kozina, R. Felix, D. Gerlach, Y. Yamashita, S. Ueda, T. Chikyow, R. G. Wilks, W. Witte, and M. Bär, In-depth analysis of the Zn(O,S) / Cu(In,Ga)Se2 interface formation, VISUAL PRESENTATION
PVSEC-26, October 24 – 28, 2016, Singapore
– N. Nicoara, T. Kunze, D. Hariskos, P. Jackson, R. Félix, R.G. Wilks, W. Witte, M. Bär, and S. Sadewasser, Spatially-resolved insight into the formation of the CdS/Cu(In,Ga)Se2 interface – evidence for chemical and electronic non-uniformities, ORAL PRESENTATION
BESSY II Foresight Workshop on Energy Materials Research, October 10 – 11, 2016, Berlin (Germany)
– T. Kunze, P. Jackson, D. Hariskos, W. Witte, D. Gerlach, Y. Yamashita, T. Chikyow, S. Ueda, A. Siebert, C. Hartmann, X. Kozina, R. Felix, R. G. Wilks, and M. Bär, Monitoring the formation of the Zn(O,S) / Cu(In,Ga)Se2 interface, VISUAL PRESENTATION
ICTMC-20, September 5 – 9, 2016, Halle (Saale) (Germany) – M. H. Wolter, P. Reinhard, B. Bissig, P. Jackson, and S. Siebentritt, Correcting for interference effects in photoluminescence in Cu(In,Ga)Se2 based thin films, VISUAL PRESENTATION
16th EMC, August 28 – September 2, 2016, Lyon (France)
– C. Castro, M. Raghuwanshi, P. Pareige, S. Duguay, E. Cadel, W. Witte, P. Jackson, D. Hariskos, F. Kessler, S. Buecheler, R. Carron, E. Avancini, B. Bissig, and A. N. Tiwari, Combining TEM and APT for a better understanding of super high efficiency Cu(In,Ga)Se2 thin film solar cells, VISUAL PRESENTATION
32nd EU PVSEC, June 20 – 24, 2016, Munich (Germany)
– W. Witte, P. Jackson, D. Hariskos, F. Kessler, S. Buecheler, R. Carron, E. Avancini, B. Bissig, S. Siebentritt, F. Werner, M. Wolter, P. Pareige, P. Muguerou, S. Duguay, E. Cadel, C. Castro, M. Raghuwanshi, R. Menozzi, G. Sozzi, E. Bourgeois, G. Degutis, A. Hardy, M. Bär, R. G. Wilks, T. Kunze, S. Sadewasser, N. Nicoara, M. Puska, M. Fedina, H.-P. Komsa, V. Havu, D. Bremaud, B. Dimmler, R. Wächter, and A. N. Tiwari, Super high efficiency Cu(In,Ga)Se2 thin-film solar cells approaching 25%: Results of the EU project Sharc25, VISUAL PRESENTATION
43rd IEEE PVSC, June 5 – 10, 2016, Portland, OR (USA)
– E. Handick, P. Reinhard, R. G. Wilks, F. Pianezzi, T. Kunze, D. Kreikemeyer-Lorenzo, L. Weinhardt, M. Blum, W. Yang, M. Gorgoi, E. Ikenaga, D. Gerlach, S. Ueda, Y. Yamashita, T. Chikyow, C. Heske, S. Buecheler, A. N. Tiwari, and M. Bär, NaF/KF post-deposition treatment induced formation of a K-In-Se – type surface species on Cu(In,Ga)Se2 thin-film solar cell absorbers, ORAL PRESENTATION
– G. Sozzi, M. Lazzarini, R. Menozzi, R. Carron, E. Avancini, B. Bissig, S. Buecheler, and A. N. Tiwari, A numerical study of the use of C-V characteristics to extract the doping density of CIGS absorbers, VISUAL PRESENTATION
– G. Sozzi, S. Di Napoli, R. Menozzi, R. Carron, E. Avancini, B. Bissig, S. Buecheler, and A. N. Tiwari, Analysis of Ga grading in CIGS absorbers with different Cu content, VISUAL PRESENTATION
EU PV Clusters 3rd workshop and General Assembly, May 25 – 26, 2016, Barcelona (Spain) – W. Witte, Super high efficiency Cu(In,Ga)Se2 thin-film solar cells approaching 25%, ORAL PRESENTATION
E-MRS Spring Meeting, May 2 – 6, 2016, Lille (France)
– R. Carron, E. Avancini, B. Bissig, P. A. Losio, B. Ruhstaller, J. Steinhauser, S. Buecheler, and A. N. Tiwari, Refractive indices of layers of Cu(In,Ga)Se2 solar cells, ORAL PRESENTATION
– M. Fedina, H.-P. Komsa, V. Havu, and M. Puska, Native defects and alkali metal impurities in CIGS materials, first principles calculations revisited, VISUAL PRESENTATION
Physics Days 2016, March 29 – 31, 2016, Oulu (Finland)
– M. Fedina, H.-P. Komsa, V. Havu, and M. Puska, Native point defects and alkali metal impurities in CIGS materials, first principles calculations revisited, ORAL PRESENTATION
2015
Seventh Joint BER II and BESSY II User Meeting, December 9 – 11, 2015, Berlin (Germany)
– T. Kunze, P. Jackson, D. Hariskos, W. Witte, D. Gerlach, Y. Yamashita, T. Chikyow, S. Ueda, R. Felix, R. G. Wilks, and M. Bär, Monitoring the formation of the CdS / Cu(In,Ga)Se2 interface, VISUAL PRESENTATION
F. Babbe, H. Elanzeery, M. H. Wolter, K. Santhosh, and S. Siebentritt, The hunt for the third acceptor in CuInSe2 and Cu(In,Ga)Se2 absorber layers, J. Phys.: Condens. Matter 31 (2019) 425702
DOI: 10.1088/1361-648X/ab2e24
C. Spindler, F. Babbe, M. H. Wolter, F. Ehré, K. Santhosh, P. Hilgert, F. Werner, and S. Siebentritt, Electronic defects in Cu(In, Ga)Se2: Towards a comprehensive model, Phys. Rev. Mater. 3 (2019) 090302
DOI: 10.1103/PhysRevMaterials.3.090302
N. Nicoara, R. Manaligod, P. Jackson, D. Hariskos, W. Witte, G. Sozzi, R. Menozzi, and S. Sadewasser, “Direct evidence for grain boundary passivation in Cu(In,Ga)Se2 solar cells through alkali-fluoride post deposition treatments”, Nat. Commun. 10 (2019)
DOI: 10.1038/s41467-019-11996-y
M. Zutter, J. Virtuoso, P. Anacleto, L. Yasin, M. Alves, M. Madeira, O. Bondarchuk, S. Mitra, D. Fuster, J. M. Garcia, F. Briones, R. Waechter, O. Kiowski, D. Hariskos, D. Colombara, and S. Sadewasser, Giant VOC boost of low-temperature annealed CIGS with sputtered Zn(O,S) buffers, Phys. Stat. Sol. (RRL) 13 (2019) 1900145
DOI: 10.1002/pssr.201900145
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R. Carron, S. Nishiwaki, T. Feurer, R. Hertwig, E. Avancini, J. Löckinger, S.-C. Yang, S. Buecheler, and A. N. Tiwari, Advanced Alkali Treatments for High-Efficiency Cu(In,Ga)Se2 Solar Cells on Flexible Substrates, Adv. Energy Mater. 9 (2019) 1900408
DOI: 10.1002/aenm.201900408
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T. P. Weiss, B. Bissig, T. Feurer, R. Carron, S. Buecheler, and A. N. Tiwari, Bulk and surface recombination properties in thin film semiconductors with different surface treatments from time-resolved photoluminescence measurements, Sci. Reports 9 (2019) 5385
DOI: 10.1038/s41598-019-41716-x
J. Löckinger, S. Nishiwaki, B. Bissig, G. Degutis, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, The use of HfO2 in a point contact concept for front interface passivation of Cu(In,Ga)Se2 solar cells, Sol. Energy Mater. Sol. Cells 195 (2019) 213
DOI: 10.1016/j.solmat.2019.03.009
T. P. Weiss, R. Carron, M. H. Wolter, J. Löckinger, E. Avancini, S. Siebentritt, S. Buecheler, and A. N. Tiwari, Time-resolved photoluminescence on double graded Cu(In,Ga)Se2 – Impact of front surface recombination and its temperature dependence, Sci. Technol. Adv. Mater. 20 (2019) 313
DOI: 10.1080/14686996.2019.1586583
M. Raghuwanshi, A. Vilalta-Clemente, C. Castro, S. Duguay, E. Cadel, P. Jackson, D. Hariskos, W. Witte, and P. Pareige, Influence of RbF post deposition treatment on heterojunction and grain boundaries in high efficient (21.1%) Cu(In,Ga)Se2 solar cells, Nano Energy 60 (2019) 103
DOI: 10.1016/j.nanoen.2019.03.028
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M. Malitckaya, T. Kunze, H.-P. Komsa, V. Havu, E. Handick, R. G. Wilks, M. Bär, and M. J. Puska, Alkali Postdeposition Treatment-Induced Changes of the Chemical and Electronic Structure of Cu(In,Ga)Se2 Thin-Film Solar Cell Absorbers: A First-Principle Perspective, ACS Appl. Mater. Interfaces 11 (2019) 3024
DOI: 10.1021/acsami.8b18216
T. Feurer, F. Fu, T. P. Weiss, E. Avancini, J. Löckinger, S. Buecheler, and A. N. Tiwari, RbF post deposition treatment for narrow bandgap Cu(In,Ga)Se2 solar cells, Thin Solid Films 670 (2019) 34
DOI: 10.1016/j.tsf.2018.12.003
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R. Carron, C. Andres, E. Avancini, T. Feurer, S. Nishiwaki, S. Pisoni, F. Fu, M. Lingg, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, Bandgap of thin film solar cell absorbers: A comparison of various determination methods, Thin Solid Films 669 (2019) 482
DOI: 10.1016/j.tsf.2018.11.017
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2018
J. Löckinger, S. Nishiwaki, C. Andres R. Erni, M. D. Rossell, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, ALD-ZnxTiyO as Window Layer in Cu(In,Ga)Se2 Solar Cells, ACS Appl. Mater. Interfaces 10 (2018) 43603
DOI: 10.1021/acsami.8b14490
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E. Avancini, D. Keller, R. Carron, Y. Arroyo-Rojas Dasilva, R. Erni, A. Priebe, S. Di Napoli, M. Carrisi, G. Sozzi, R. Menozzi, F. Fu, S. Buecheler, and A. N. Tiwari, Voids and compositional inhomogeneities in Cu(In,Ga)Se2 thin films: evolution during growth and impact on solar cell performance, Sci. Technol. Adv. Mater. 19 (2018) 871
DOI: 10.1080/14686996.2018.1536679
R. Wuerz, W. Hempel, and P. Jackson, Diffusion of Rb in polycrystalline Cu(In,Ga)Se2 layers and effect of Rb on solar cell parameters of Cu(In,Ga)Se2 thin-film solar cells, J. Appl. Phys. 124 (2018) 165305
DOI: 10.1063/1.5044629
M. H. Wolter, B. Bissig, E. Avancini, R. Carron, S. Buecheler, P. Jackson, and S. Siebentritt, Influence of Sodium and Rubidium Postdeposition Treatment on the Quasi-Fermi Level Splitting of Cu(In,Ga)Se2 Thin Films, IEEE J. Photovolt. 8 (2018) 1320.
DOI: 10.1109/JPHOTOV.2018.2855113
F. Werner, M. H. Wolter, S. Siebentritt, G. Sozzi, S. Di Napoli, R. Menozzi, P. Jackson, W. Witte, R. Carron, E. Avancini, T. P. Weiss, and S. Buecheler, Alkali treatments of Cu(In,Ga)Se2 thin-film absorbers and their impact on transport barriers, Prog. Photovolt. Res. Appl. 26 (2018) 911
DOI: 10.1002/pip.3032
B. Bissig, R. Carron, L. Greuter, S. Nishiwaki, E. Avancini, C. Andres, T. Feurer, S. Buecheler, and A. N. Tiwari, Novel back contact reflector for high efficiency and double graded Cu(In,Ga)Se2 thin film solar cells, Prog. Photovolt. Res. Appl. 26 (2018) 894
DOI: 10.1002/pip.3029
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R. Carron, E. Avancini, T. Feurer, B. Bissig, P. A. Losio, R. Figi, C. Schreiner, M. Bürki, E. Bourgeois, Z. Remes, M. Nesladek, S. Buecheler, and A. N. Tiwari, Refractive indices of layers and optical simulations of Cu(In,Ga)Se2 solar cells, Sci. Technol. Adv. Mater. 19 (2018) 396
DOI: 10.1080/14686996.2018.1458579
A. Vilalta-Clemente, M. Raghuwanshi, S. Duguay, C. Castro, E. Cadel, P. Pareige, P. Jackson, R. Wuerz, D. Hariskos, and W. Witte, Rubidium distribution at atomic scale in high efficient Cu(In,Ga)Se2 thin-film solar cells, Appl. Phys. Lett. 112 (2018) 103105.
DOI: 10.1063/1.5020805
J. Löckinger, S. Nishiwaki, T. P. Weiss, B. Bissig, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, TiO2 as intermediate buffer layer in Cu(In,Ga)Se2 solar cells, Sol. Energy Mater. Sol. Cells 174 (2018) 397
DOI: 10.1016/j.solmat.2017.09.030
T. P. Weiss, S. Nishiwaki, B. Bissig, R. Carron, E. Avancini, J. Löckinger, S. Buecheler, and A. N. Tiwari, Injection Current Barrier Formation for RbF Postdeposition-Treated Cu(In,Ga)Se2-Based Solar Cells, Adv. Mater. Interfaces 5 (2018) 1701007
DOI: 10.1002/admi.201701007
2017
N. Nicoara, T. Kunze, P. Jackson, D. Hariskos, R. Félix Duarte, R. G. Wilks, W. Witte, M. Bär, and S. Sadewasser, Evidence for Chemical and Electronic Nonuniformities in the Formation of the Interface of RbF-Treated Cu(In,Ga)Se2 with CdS, ACS Appl. Mater. Interfaces 9 (2017) 44173
DOI: 10.1021/acsami.7b12448
W. Witte, R. Carron, D. Hariskos, F. Fu, R. Menner, and S. Buecheler, IZO or IOH Window Layers Combined with Zn(O,S) and CdS Buffers for Cu(In,Ga)Se2Solar Cells, Phys. Stat. Sol. A 214 (2017) 1700688
DOI: 10.1002/pssa.201700688
E. Avancini, R. Carron, T. P. Weiss, C. Andres, M. Bürki, C. Schreiner, R. Figi, Y. E. Romanyuk, S. Buecheler, and A. N. Tiwari, Effects of Rubidium Fluoride and Potassium Fluoride Postdeposition Treatments on Cu(In,Ga)Se2 Thin Films and Solar Cell Performance, Chem. Mater 29 (2017) 9695
DOI: 10.1021/acs.chemmater.7b03412
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T. P. Weiss, S. Nishiwaki, B. Bissig, S. Buecheler, and A. N. Tiwari, Voltage dependent admittance spectroscopy for the detection of near interface defect states for thin film solar cells, Phys. Chem. Chem. Phys. 19 (2017) 30410
DOI: 10.1039/c7cp05236g
M. Malitckaya, H.-P. Komsa, V. Havu, and M. J. Puska, Effect of alkali metal atom doping on the CuInSe2-based solar cell absorber, J. Phys. Chem. C 121 (2017) 15516
DOI: 10.1021/acs.jpcc.7b03083
G. Sozzi, S. Di Napoli, R. Menozzi, B. Bissig, S. Buecheler, and A. N. Tiwari, Impact of front-side point contact/passivation geometry on thin-film solar cell performance, Sol. Energy Mater. Sol. Cells 165 (2017) 94
DOI: 10.1016/j.solmat.2017.02.031
M. H. Wolter, B. Bissig, P. Reinhard, S. Buecheler, P. Jackson, and S. Siebentritt, Correcting for interference effects in the photoluminescence of Cu(In,Ga)Se2 thin films, Phys. Stat. Sol. C 14 (2017) 1600189
DOI: 10.1002/pssc.201600189
M. Malitckaya, H.-P. Komsa, V. Havu, and M. J. Puska, First-principles modeling of point defects and complexes in thin-film solar-cell absorber CuInSe2, Adv. Electron. Mater. 3 (2017) 1600353
DOI: 10.1002/aelm.201600353
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E. Handick, P. Reinhard, R. G. Wilks, F. Pianezzi, T. Kunze, D. Kreikemeyer-Lorenzo, L. Weinhardt, M. Blum, W. Yang, M. Gorgoi, E. Ikenaga, D. Gerlach, S. Ueda, Y. Yamashita, T. Chikyow, C. Heske, S. Buecheler, A. N. Tiwari, and M. Bär, Formation of a K-In-Se Surface Species by NaF/KF Postdeposition Treatment of Cu(In,Ga)Se2 Thin-Film Solar Cell Absorbers, ACS Appl. Mater. Interfaces 9 (2017) 3581
DOI: 10.1021/acsami.6b11892
E. Avancini, R. Carron, B. Bissig, P. Reinhard, R. Menozzi, G. Sozzi, S. Di Napoli, T. Feurer, S. Nishiwaki, S. Buecheler and A. N. Tiwari, Impact of compositional grading and over all Cu deficiency on the near-infrared response in Cu(In,Ga)Se2 solar cells, Prog. Photovolt: Res. Appl. 25 (2017) 233
DOI: 10.1002/pip.2850
2016
P. Jackson, R. Wuerz, D. Hariskos, E. Lotter, W. Witte, and M. Powalla, Effects of heavy alkali elements in Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6%, Phys. Stat. Sol. (RRL) 10 (2016) 583
DOI: 10.1002/pssr.201600199
G. Sozzi, S. Di Napoli, M. Carrisi, and R. Menozzi, Assessing the impact of rear point-contact/passivation on CIGS cells with different absorber thickness and grading, Proceedings of the World Conference on Photovoltaic Energy Conversion (WCPEC-7), Waikoloa HI, USA, June 10-15, 2018, pp. 3044 – 3047
DOI: 10.1109/PVSC.2018.8548312
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G. Sozzi, S. Di Napoli R. Menozzi, T. P. Weiss, S. Buecheler, and A.
N. Tiwari, Interpretation of admittance signatures in Cu(In,Ga)Se2 solar cells, Proceedings of the World Conference on Photovoltaic Energy Conversion (WCPEC-7), Waikoloa HI, USA, June 10-15, 2018, pp. 2515 – 2519
DOI: 10.1109/PVSC.2018.8547296
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N. Nicoara, R. Manaligod, P. Jackson, D. Hariskos, W. Witte, and S. Sadewasser, Modification of electronic grain boundary properties of Cu(In,Ga)Se2 by alkali-fluoride post deposition treatments, Proceedings of the World Conference on Photovoltaic Energy Conversion (WCPEC-7), Waikoloa HI, USA, June 10-15, 2018, pp. 1638 – 1640
DOI: 10.1109/PVSC.2018.8547982
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2017
G. Sozzi, S. Di Napoli, R. Menozzi, F. Werner, S. Siebentritt, P. Jackson, and W. Witte, Influence of conduction band offsets at window/buffer and buffer/absorber interfaces on the roll-over of J-V curves of CIGS solar cells, Proceedings of the 44th IEEE Photovoltaic Specialists Conference (PVSC), Washington D.C., USA, June 25-30, 2017, pp. 2205 – 2208
DOI: 10.1109/PVSC.2017.8366649
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M. Fedina, H.-P. Komsa, V. Havu, and M. J. Puska, First-principles modeling of alkali metal post deposition treatment effects in CIGS solar cells, Proceedings of the 44th IEEE Photovoltaic Specialists Conference (PVSC), Washington D.C., USA, June 25-30, 2017, pp. 2070-2072
DOI: 10.1109/PVSC.2017.8366204
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2016
G. Sozzi, M. Lazzarini, R. Menozzi, R. Carron, E. Avancini, B. Bissig, S. Buecheler, and A. N. Tiwari, A numerical study of the use of C-V characteristics to extract the doping density of CIGS absorbers, Proceedings of the 43rd IEEE Photovoltaics Specialists Conference (PVSC), Portland, OR, USA, June 5 – 10, 2016, pp. 2283 – 2288
DOI: 10.1109/PVSC.2016.7750043
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G. Sozzi, S. Di Napoli, R. Menozzi, R. Carron, E. Avancini, B. Bissig, S. Buecheler, and A. N. Tiwari, Analysis of Ga grading in CIGS absorbers with different Cu content, Proceedings of the 43rd IEEE Photovoltaics Specialists Conference (PVSC), Portland, OR, USA, June 5 – 10, 2016, pp. 2279 – 2282
DOI: 10.1109/PVSC.2016.7750042
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E. Handick, P. Reinhard, R. G. Wilks, F. Pianezzi, R. Félix, M. Gorgoi, T. Kunze, S. Buecheler, A. N. Tiwari, and M. Bär, NaF/KF post-deposition treatment and their influence on the structure of Cu(In,Ga)Se2 absorber surfaces, Proceedings of the 43rd IEEE Photovoltaics Specialists Conference (PVSC), Portland, OR, USA, June 5 – 10, 2016, pp. 0017 – 0021
DOI: 10.1109/PVSC.2016.7749400
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