基于分枝TiO2纳米棒阵列的有机/无机杂化太阳能电池制备及其双重界面修饰

项目名称： 基于分枝TiO2纳米棒阵列的有机/无机杂化太阳能电池制备及其双重界面修饰

项目编号： No.51302075

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 汪竞阳

作者单位： 湖北文理学院

项目金额： 25万元

中文摘要： 为克服有机/无机杂化太阳能电池中有机给体与无机受体间界面相容性差，光谱响应范围窄、激子分离及载流子传输效率低的缺陷，本项目设计了基于有机修饰剂和无机半导体量子点双重界面修饰的P3HT/分枝TiO2纳米棒阵列新型杂化太阳能电池。利用二步水热法生长出分枝TiO2纳米棒阵列作为受体，通过纳米棒阵列构筑有序的杂化太阳能电池结构，加快载流子在电池内部的传输；同时利用纳米棒的分枝形貌增大界面接触面积，提高激子分离效率。然后科学选择有机配体及染料与无机半导体量子点搭配，对TiO2纳米棒表面进行双重修饰，从而拓展光谱响应范围，增强光吸收，调整界面能带结构，促进载流子转移，减少复合，提高电池光电转换性能。系统研究基于双重界面修饰的杂化太阳能电池界面激子分离、载流子传输和复合反应动力学，建立等效电路模型，探讨电输运机理，揭示界面修饰的增效机制。本项目研究可为新型光电功能材料和器件的开发提供实践支撑和理论基础。

中文关键词： 分枝TiO2纳米棒阵列；有机无机杂化太阳能电池；界面修饰；光电性能；电输运

英文摘要： In order to make up the defects of organic/inorganic hybrid solar cells, such as poor interface compatibility, narrow spectral response range and inefficient exciton dissociation and charge transfer. We propose to prepare a new organic/inorganic hybrid solar cells based on P3HT/branched TiO2 nanorod arrays by using dual interface modification, which consist of organic modifier and inorganic semiconductor quantum dots. The branched TiO2 nanorod arrays will be prepared by the two-step hydrothermal method. Ordered Hybrid solar cell consisting of nanorod arrays will promote the carrier transport, and the branched morphology of the nanorods will increase the interfacial contact area, improve the exciton separation efficiency. On this basis, the surface of the TiO2 nanorod will be dual modified by organic ligands or dyes with inorganic semiconductor quantum dot, leading to expand the range of spectral response, enhance light absorption, promote the carrier transfer and reduce the recombination. As a result, the efficiency of hybrid solar cells will be greatly enhanced. Equivalent-circuit model of the organic/inorganic hybrid solar cell will be set up, and the reaction dynamics of exciton dissociation, charge transfer and recombination of the hybrid solar cells based on the dual interface modification will also be disc

英文关键词： Branched TiO2 nanorod arrays；Inorganic/organic hybrid solar cells；Interface modification；Photoelectric properties；Electrical transport