8.01% CuInGaSe2 solar cells fabricated by air-stable low-cost inks.
8.01% CuInGaSe2 solar cells fabricated by air-stable low-cost inks.
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DOI：
10.1039/c2cp41969f
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发表时间：
2012-07
期刊：
影响因子：
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通讯作者：
Wei Wang;Seung-Yeol Han;S. Sung;Dae‐Hwan Kim;Chih-hung Chang
中科院分区：
文献类型：
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作者：
Wei Wang;Seung-Yeol Han;S. Sung;Dae‐Hwan Kim;Chih-hung Chang
CuInGaSe（2）（CIGS）是一种很有前途的薄膜太阳能电池材料，由于其高的能量转换效率和潜在的较低的制造成本，在几十年来受到了广泛的关注。溶液沉积作为一种比真空沉积更便宜的工艺方法，已经成功地应用于制造电子器件，如晶体管和太阳能电池。在本文中，我们报道了CIGS薄膜太阳能电池的能量转换效率达到8.01%，使用空气稳定，低成本的油墨。新开发的油墨由市售的低成本化合物和溶剂组成，可以使用各种印刷和涂层技术进行加工。更重要的是，这种油墨可以生产不含硒化铜和无定形碳的CIGS薄膜，这是基于溶液的CIGS工艺的两种常见副产品。探讨了金属盐前驱体薄膜向CIGS吸收体薄膜转化的机理，以及硒蒸气压对吸收体薄膜质量和光伏器件性能的影响。采用较高的硒化分压可获得高质量的微米级CIGS薄膜。
CuInGaSe(2) (CIGS), a promising thin film solar cell material, has gained lots of attention in decades due to its high energy conversion efficiency and potential lower manufacture cost over conventional Si solar cells. As a cheaper processing method compared to vacuum-based techniques, solution-based deposition has been successfully applied to fabricate electronic devices, such as transistors and solar cells. In this paper, we reported CIGS thin film solar cells with an energy conversion efficiency reaching up to 8.01% using air-stable, low-cost inks. The newly developed inks consist of commercially available, low-cost compounds and solvents and can be processed using a variety of printing and coating techniques. More importantly, the inks can produce CIGS films free of copper selenides and amorphous carbon, two common by-products from solution-based CIGS processes. The mechanism for the transformation from metal salt precursor films to CIGS absorber thin films and the influence of selenium vapour pressure on absorber film quality and photovoltaic device performance were investigated and discussed. High-quality CIGS films with micrometer-sized crystals were obtained by using higher selenization partial pressure.