Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS
Volume 41, Issue 2B, Pages L165-L167Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/JJAP.41.L165
Keywords
Cu(In, Ga)Se-2; CIGS; high efficiency; thin-film; solar cells; ZnS; Cd-free; chemical bath deposition
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Cadmium-free hi-fi efficiency Cu(In, Ga)Se-2 (CIGS) thin-film solar cells have been fabricated using chemical bath deposition (CBD)-ZnS buffer layers. The use of CBD-ZnS, which is a wider band gap material than CBD-CdS, improved the quantum efficiency at short wavelengths, resulting in an increase in the short circuit current of fabricated solar cells. The best cell at present yielded art active area efficiency of 18.1%, which is the highest value reported previously for CIGS thin solar cells with alternative buffer layers to CdS.
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