16 February 2018 Locally grown Cu(In,Ga)Se2 micro islands for concentrator solar cells
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Abstract
Light concentration opens up the path to enhanced material efficiency of solar cells via increased conversion efficiency and decreased material requirement. For true material saving, a fabrication method allowing local growth of high quality absorber material is essential. We present two scalable fs-laser based approaches for bottom-up growth of Cu(In,Ga)Se2 micro islands utilizing either site-controlled assembly of In(,Ga) droplets on laser-patterned substrates during physical vapor deposition, or laser-induced forward transfer of (Cu,In,Ga) layers for local precursor arrangement. The Cu(In,Ga)Se2 absorbers formed after selenization can deliver working solar devices showing efficiency enhancement under light concentration.
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M. Schmid, M. Schmid, B. Heidmann, B. Heidmann, F. Ringleb, F. Ringleb, K. Eylers, K. Eylers, O. Ernst, O. Ernst, S. Andree, S. Andree, J. Bonse, J. Bonse, T. Boeck, T. Boeck, J. Krüger, J. Krüger, } "Locally grown Cu(In,Ga)Se2 micro islands for concentrator solar cells", Proc. SPIE 10527, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VII, 1052707 (16 February 2018); doi: 10.1117/12.2288253; https://doi.org/10.1117/12.2288253
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