Efficiency enhancement of Cu(In,Ga)Se2 solar cells due to post-deposition Na incorporation
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- 16 February 2004
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (7), 1129-1131
- https://doi.org/10.1063/1.1646758
Abstract
(CIGS) absorber layers for thin-film solar cells were grown without sodium. Na was diffused into some of the absorbers after growth, which led to strongly improved device performance compared with Na-free cells. Efficiencies of 13.3% and 14.4% were achieved at substrate temperatures as low as 400 and respectively. With the post-deposition treatment, the effects of Na on CIGS growth are excluded, and most of the Na is expected to reside at grain boundaries. The dominating cause for Na-induced device improvements might be passivation of grain boundaries.
Keywords
This publication has 8 references indexed in Scilit:
- Effects of NaF coevaporation on structural properties of Cu(In,Ga)Se2 thin filmsThin Solid Films, 2003
- Na effects on CuInSe2: Distinguishing bulk from surface phenomenaJournal of Applied Physics, 2002
- Preparation of Cu(In,Ga)Se2 thin films at low substrate temperaturesJournal of Materials Research, 2001
- Effect of substrate temperature and depostion profile on evaporated Cu(InGa)Se 2 films and devicesThin Solid Films, 2000
- Influence of sodium on the growth of polycrystalline Cu(In,Ga)Se 2 thin filmsThin Solid Films, 2000
- Growth of Cu(In,Ga)Se 2 thin films by coevaporation using alkaline precursorsThin Solid Films, 2000
- Direct observation of Na and O impurities at grain surfaces of CuInSe2 thin filmsJournal of Vacuum Science & Technology A, 1999
- Electronic effects of sodium in epitaxial CuIn1−xGaxSe2Journal of Applied Physics, 1997