溶液法铜基薄膜太阳能电池的制备

Abstract

铜基半导体材料由于高的光吸收系数以及合适的光学帶隙而被广泛应用于薄膜太阳能电池的吸光层，具有潜在的市场价值。铜基薄膜吸收层材料制备过程主要分为真空法和溶液法。前者需要较高的真空度和昂贵的器械设备，使得器件制备成本下降空间十分有限。溶液法由于操作简单，提供了低成本、大量生产的可能性。在溶液法制备薄膜电池中，纳米晶溶液法和分子前驱体体系两种方法被广泛研究。纳米晶成膜方法涉及复杂的纳米晶合成过程，此外，长碳链的有机配体也对电池性能产生不良的影响。肼溶液法是分子前驱体溶液的代表，也是溶液法最高电池效率的创造者。然而，无水肼本身的易爆炸和剧毒成为阻碍其进一步发展的关键因素。本论文主要针对当前国际上溶液法制备铜基薄膜电池存在的一些问题，致力于发展操作简单，低价低毒的溶液法，并成功地制备了几种常见的铜基薄膜太阳能电池，详细研究如下： 1. 发展了一种简单、低毒的制备CuInS2(CIS)分子前驱体溶液的...Abstract Copper-based semiconductor thin films pose a promising commercial value due to their high light absorption coefficient and suitable optical bandgaps, which have been applied in preparation of photovoltaic device. At present, the deposition methods of copper-based thin films absorbing layer fall into two classes: vacuum-based and solution-based processes. The former requires high vacuum and expensive equipment, which leads to a high manufacturing cost. Solution-based process provides a possibility of low-cost and mass production owing to simple operation. Among the solution-based processes, nanocrystal-based and molecule-based precursor approaches received a great deal of attention. Nanocrystal-deposited thin film absorbing layer needs complex and tedious synthesis, in addition, lo..