Locally grown Cu(In,Ga)Se2 micro islands for concentrator solar cells
Locally grown Cu(In,Ga)Se2 micro islands for concentrator solar cells
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DOI:
10.1117/12.2288253
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发表时间:
2018-02
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通讯作者:
M. Schmid;B. Heidmann;F. Ringleb;K. Eylers;O. Ernst;S. Andree;J. Bonse;T. Boeck;J. Krüger
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作者:
M. Schmid;B. Heidmann;F. Ringleb;K. Eylers;O. Ernst;S. Andree;J. Bonse;T. Boeck;J. Krüger
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.