Gall, S. ; Becker, C. ; Conrad, E. ; Dogan, P. ; Fenske, F. ; Gorka, B. ; Lee, K.Y. ; Rau, B. ; Ruske, F. ; Rech, B.: Polycrystalline silicon thin-film solar cells on glass. Solar Energy Materials and Solar Cells 93 (2009), p. 1004-1008
10.1016/j.solmat.2008.11.029
Abstract:
Poly-Si thin-film solar cells on glass feature the potential to reach single junction efficiencies of 15 % or even higher at low-costs. In this paper innovative approaches are discussed which could lead to substantial efficiency improvements and significant cost reductions: (i) Preparation of large-grained poly-Si films using the ‘seed layer concept’ targeting at high material quality. (ii) Utilization of ZnO:Al-coated glass enabling simple contacting and light-trapping schemes. (iii) Utilization of high-rate electron-beam evaporation for the absorber deposition offering a high potential for cost reduction.