金属硫族化合物(S、Se、Te)一直是太阳电池的研究热点材料之一。本项目主要利用硫醇-胺或N-烷基二硫代氨基甲酸-DMF混合溶剂来溶解硒、碲、PbO等作为前驱体溶液，采用SILAR法结合后硒碲化处理、溶液热解法直接或结合后硒碲化处理二种途径，通过调节前驱体溶液组成与退火热解过程参数、进行多元合金化、控制材料的维度、配合太阳电池微结构的精细化设计等四种策略，来减少材料的缺陷、改进薄膜的性质、调配能带位置、优化能级结构，组装全固态铅基硫族化合物薄膜敏化TiO2纳米棒阵列太阳电池；探讨综合利用铅、锑、镉、锡基硫族化合物薄膜等来构建能级匹配良好的多级梯度带隙结构的薄膜太阳电池。系统研究薄膜的制备、组成、微结构、性质与相应太阳电池光伏性能之间的关系，获得一种简捷、廉价、高质量的铅基硫族化合物等薄膜的溶液热解法制备新途径，为发展低成本、可规模化开发利用的新型薄膜太阳电池，提供重要的理论依据和技术支撑。

Metal chalcogenides (S, Se, Te) are one of the important materials in the field of solar cells. In this project, Se, Te, PbO are dissolved in the thiol-amine/ N-alkyldithiocarbamic-acid-DMF solvent mixtures as the precursor solutions. All solid-state lead chalcogenide thin film sensitized TiO2 nanorod array solar cells are assembled by the two ways, the SILAR method combined with Se/Te treatments and the solution pyrolysis method without/with Se/Te treatments. The four strategies, changing the precursor solution composition and the pyrolysis process parameters, making the multi-element alloyed procedure, controlling the material dimension, doing the fine design of the solar cell microstructure, are applied to reduce the material defects, improve the thin film properties, adjust the energy band position and optimize the energy level structure. The thin film solar cells with well-matched energy level and multi-step gradient band gap structure are also constructed using lead, antimony, cadmium, tin based chalcogenide thin films and so on. The relationship between the preparation, composition, microstructure and properties of the thin films and the photovoltaic performance of the corresponding solar cells is systematically clarified. The solution pyrolysis preparation of a facile, cheap and high-quality multi-element alloyed lead chalcogenide thin film is developed. Therefore, the project can provide the important theoretical basis and technical support for the development of the novel, low-cost and scale-manufacture thin film solar cells.