Journal
JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
Volume 1, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3005376
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Funding
- New Energy and Industrial Technology Development Organization (NEDO)
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Flexible Cu(In, Ga)Se-2 (CIGS) solar cells were fabricated using alkali-silicate glass thin layers (ASTL) as an alkali source material deposited on various flexible substrates prior to the Mo backcontact layer deposition. Control of univalent alkali metal incorporation into the CIGS layer with the use of ASTL was demonstrated regardless of the presence of other multivalent metal impurities in ASTL. Dramatic enhancement in cell efficiencies using ASTL was observed though the use of excessively thick ASTL led to a degradation in cell performance. The quantum efficiency curves of CIGS solar cells fabricated using ASTL showed enhanced absorption in the long wavelength region. The photovoltaic performance dependence on a variety of substrate materials is also discussed. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3005376]
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