光阴极氧化镍复合材料的空穴传输机制及光电性能

项目名称： 光阴极氧化镍复合材料的空穴传输机制及光电性能

项目编号： No.21301022

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 曲婕

作者单位： 常州大学

项目金额： 24万元

中文摘要： pn-型DSSC以其43%的高理论效率为染料敏化太阳能电池的发展提供了更大的空间，其中n-型DSSC研究已相对成熟，因而p-型DSSC的性能成为组装高效pn-型DSSC的关键。目前p-型DSSC主要存在染料吸附量不足、光生空穴复合现象严重等问题 。本课题针对上述问题，拟开展以下研究工作：（1）制备氧化镍空心球光阴极材料，并对其进行元素掺杂，实现高染料负载量，以期提高电池的光电性能，并探讨电池内部光生空穴传输性能；（2）制备氧化镍/碳纳米管复合材料，以期解决电池内部光生空穴复合严重的问题，探讨碳纳米对空穴传输机制的影响。（3）对上述材料进行优化，制备元素掺杂氧化镍/碳纳米管复合材料，研究其光电性能，并探讨空穴在此复合材料的传输机制。

中文关键词： p-型染料敏化太阳能电池；光阴极；氧化镍复合材料；光电性能；传输机制

英文摘要： The theoretical efficiency limit for a tandem device with two photoactive semiconductors is around 43%, which provide a potential way to improve the photoelectrochemical properties of the DSSC. Much of the research have been focused on n-type DSSC. Comparatively few attention have been paid to p-type DSSC. So the study of p-type DSSC is important for design of high performance pn-type DSSC. There are some serious problems for the p-type DSSC，including the low dye adsorption in photocathode, the serious hole recombination, etc. To resolve the above problems, this project focuses mainly on the following issues: (1) NiO hollow sphere photocathode are synthesized followed by metal and non-metal elements doped, which are expected to improve the dye adsorption and photoelectrochemical properties. And electrochemistry tests are used to research the hole transport kinetics. (2) NiO/C nanotube composites are fabricated to resolve the serious hole recombination in DSSC and the hole transport kinetics are disscussed here. (3) Element doped NiO/C nanocomposites are synthesized by optimizing the NiO/C nanotube. The photoelectrochemical properties are tested and hole transport kinetics are disscussed.

英文关键词： p-type DSSC；photocathode；NiO nanocomposite；photoelectrochemical performance；transport kinetics