Preparation of Cu{sub 2}ZnSnSe{sub 4} solar cells by low-temperature co-evaporation and following selenization

Journal Article · Mon Jan 04 00:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4939445· OSTI ID:22489265

Gao, Chao; Hetterich, Michael ^[1]; Schnabel, Thomas; Abzieher, Tobias; Ahlswede, Erik ^[2]; Powalla, Michael ^[2]

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1. Institute of Applied Physics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe (Germany)
2. Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW), 70565 Stuttgart (Germany)

Cu{sub 2}ZnSnSe{sub 4} (CZTSe) thin films are prepared by a two-step method which involves co-evaporation of Cu, Zn, Sn, and Se on molybdenum-coated soda-lime glass at low substrate temperature and a following selenization. Solar cells with efficiencies of up to 6.5% can be achieved. The influence of the selenium deposition rates during co-evaporation and the nitrogen pressure during selenization on the properties of the CZTSe films are investigated. It is found that these two parameters can significantly affect the morphology and crystallinity of the CZTSe films. The possible reasons for the experimental results are discussed.

• OSTI ID: 22489265
• Journal Information: Applied Physics Letters, Vol. 108, Issue 1; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DEPOSITION
EFFICIENCY
EVAPORATION
GLASS
MOLYBDENUM
MORPHOLOGY
SELENIUM
SODIUM CARBONATES
SOLAR CELLS
SUBSTRATES
THIN FILMS