以硫铁化合物为光催化剂的纳米管阵列薄膜太阳能电池的构筑及其光电性质研究

项目名称： 以硫铁化合物为光催化剂的纳米管阵列薄膜太阳能电池的构筑及其光电性质研究

项目编号： No.U1261120

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 冶金与矿业学科

项目作者： 杨合

作者单位： 东北大学

项目金额： 60万元

中文摘要： 纳米管阵列(Nanotube array, TNT)具有大的比表面积和较强的电子传输等特点，作为太阳能光伏材料，能提高光虏获能力。但目前较为常用的TiO2纳米管阵列存在禁带宽度的限制，其只能响应紫外光，光电转换率较低。本申请旨在制备出作为负载硫铁化合物纳米粒子的TNT涂层或硫铁化合物纳米管阵列涂层，从而改进当前的光阳极材料应用于太阳能电池领域。研究中首先制备了负载Fe2MS4纳米粒子(M=Si,Ge)的TNT涂层(Fe2MS4/TNT),从而扩展TNT的光响应区间并提高光生电子-空穴的分离效率，对该涂层进行系统的表征以及光电性质的研究，并通过瞬态光伏技术探究可见光照射下涂层中的光生电荷迁移规律。此外，还将探索Fe基Fe2MS4纳米管阵列涂层的制备技术，通过可见光下对该涂层的i-V曲线和瞬态光电压的研究，与Fe2MS4/TNT涂层进行光电转换能力的分析比对，提出更为理想的薄膜光阳极材料。

中文关键词： 二氧化钛纳米管；硫铁化合物纳米管；太阳能电池；光电性能；芬顿

英文摘要： Nanotube arrays have been widely used in the application of soalr energy photovoltaic materials to enhance the capability of optical trap, which have the large special surface area, remarkably scattering of light and enhances the electron percolation pathway for vectorial charge transfer.However, by the limitation of the narrow band-gap, the TNT films which are more common used in solar cells are photochemically excited only by UV light and have the relatively low efficiency of light utilization.This project is aiming to fabricate the the iron sulfides photoelectric conversion thin films and TNT coatings loaded iron sulfides nanoparticles, which would improve the photoanodes and be applied in the solar cells field. In the present research contents, TNT films loaded with iron sulfides nanoparticles are prepared,which results in expending the photoresponse interval and enhances the charge carrier separation. And the coatings are well characterized, meanwhile, the photoelectric properties are investigated. The transfer discipline of the photogenerated charges is investigated by a transient photovoltage measurement. In addition, the method of preparing Fe2MS4 nanotube array films is investigated. To compare the capability of the photoelectric conversion between the Fe2MS4 nanotube array and Fe2MS4/TNT composite coat

英文关键词： TiO2 nanotube；iron-sulfur compound nanotube；solar cell；optoelectronic property；Fenton