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
期刊:
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影响因子:
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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
M. Schmid;B. Heidmann;F. Ringleb;K. Eylers;O. Ernst;S. Andree;J. Bonse;T. Boeck;J. Krüger
中科院分区:
其他
文献类型:
--
作者:
M. Schmid;B. Heidmann;F. Ringleb;K. Eylers;O. Ernst;S. Andree;J. Bonse;T. Boeck;J. Krüger

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光集中通过提高转换效率和降低材料需求开辟了提高太阳能电池材料效率的途径。为了真正节省材料,允许高质量吸收体材料的局部生长的制造方法是必不可少的。我们提出了两种可扩展的飞秒激光为基础的方法,用于自下而上的Cu(In,Ga)Se2微岛的生长,利用在物理气相沉积过程中的激光图案化的衬底上的In(,Ga)液滴的现场控制组件,或激光诱导的(Cu,In,Ga)层的局部前体排列的前向转移。在硒化之后形成的Cu(In,Ga)Se2吸收剂可以提供在光集中下显示效率增强的工作太阳能器件。
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.