Over 10% Efficient CuIn(S,Se)(2) Solar Cells Fabricated From Environmentally Benign Solution in Air
Over 10% Efficient CuIn(S,Se)(2) Solar Cells Fabricated From Environmentally Benign Solution in Air
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Over%2010%%20Efficient%20CuIn(S,Se)(2)%20Solar%20Cells%20Fabriated%20From%20Environmentally%20Benign%20Solution%20in%20Air
DOI：
10.1002/solr.201900052
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发表时间：
2019
期刊：
影响因子：
7.9
通讯作者：
Hao Xin
中科院分区：
文献类型：
--
作者：
Shaotang Yu;Yuancai Gong;Jingjing Jiang;Sanping Wu;Weibo Yan;Xingao Li;Wei Huang;Hao Xin
安全且环境友好的溶剂是通过溶液方法大规模生产薄膜太阳能电池的必要条件。本文首次采用一种工业上非常合适的溶剂N-甲基吡咯烷酮（NMP），以CuCl、InCl 3·4 H2O和硫脲为原料，制备了CuIn（S，Se）2（CISSe）太阳能电池。当在空气中处理前体膜时，从基于NMP的溶液实现了10.23%的功率转换效率，这对于在手套箱中处理的膜仅为8.55%。利用XRD、拉曼、SEM、EDX和FTIR表征表明，空气退火有利于前体膜中的有机物种的分解，这导致高质量的吸收体材料。通过镓合金化和器件制造条件的优化，可以预期器件效率的进一步提高。结果表明，高效率的薄膜太阳能电池可以从工业上合适的NMP前体溶液在空气中，这是有希望的简化薄膜加工和降低制造成本。
A safe and environmentally benign solvent is a requisite for mass production of thin film solar cells via solution methods. Here, a highly industry suitable solventN‐methyl‐pyrrolidone (NMP) is used for the first time to make a precursor solution with simple compounds of CuCl, InCl3·4H2O and thiourea and fabricate CuIn(S,Se)2(CISSe) solar cells. A power conversion efficiency of 10.23% has been achieved from the NMP‐based solution when the precursor film was processed in air, which is only 8.55% for film processed in glove box. Characterizations using XRD, Raman, SEM, EDX, and FTIR show air annealing favors decomposition of organic species in the precursor film, which results in high quality absorber materials. Further improvement in device efficiency can be expected by gallium alloying and optimization of device fabrication conditions. The results demonstrate highly efficient thin film solar cells can be fabricated from an industry suitable NMP precursor solution in air, which is promising for simplifying film processing and reducing manufacture cost.