期刊
APPLIED PHYSICS LETTERS
卷 113, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.5031898
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资金
- JSPS KAKENHI [16K04969]
- Grants-in-Aid for Scientific Research [16K04969] Funding Source: KAKEN
Granular particles formed on a CuInSe2 (CIS) thin film surface with alkali-halide RbF postdeposition treatment (RbF-PDT) are found to concentrate preferably on other than smooth (112)-planes present on the CIS film surface. As a consequence, a large number of distinctive pores are selectively formed at relatively rough facets. Although the open circuit voltage and fill factor values of CIS solar cells improve with either RbF-PDT or heat-light soaking (HLS) treatment, the effects of these treatments are distinguishable. The ratio of carrier recombination rates at the interface (R-i) to that in the bulk (R-b), namely, R-i/R-b, decreases with RbF-PDT. HLS treatment performed on RbF-PDT CIS devices leads to a further decrease in the value of R-i/R-b, whereas the value of R-i /R-b of CIS devices fabricated without RbF-PDT increases with HLS treatment. Ternary CIS solar cells grown with RbF-PDT and HLS treatment reproducibly demonstrate enhanced photovoltaic efficiencies. Published by AIP Publishing.
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