一维二氧化钛光阳极的制备及在染料敏化太阳能电池中的应用综述

发布时间：2018-06-12 09:29

本文选题：一维二氧化钛 + 染料敏化太阳能电池　；参考：《材料导报》2017年17期

【摘要】：二氧化钛由于具有合适的禁带宽度、良好的光电性能、制作工艺简单等特点,目前广泛应用于染料敏化太阳能电池中。其中,大部分光阳极主要是由纳米颗粒组成,但纳米颗粒不利于电子和空穴的分离及传输、染料敏化太阳能电池的光电转化效率的提升。因此,可采用一维纳米结构光阳极替换纳米颗粒,这有利于提升染料敏化太阳能电池的光电转化效率。一维纳米材料具有较少的晶界,可为电荷提供通道、加速电子的传输,且能有效减少空穴/电子的复合,减少电子与染料的复合,从而提高效率。同时一维二氧化钛其较大的比表面积,不仅有利于染料吸附量增加,而且能有效提高电流密度。综述了几种一维二氧化钛制备方法的最新研究进展,分析了不同制备方法对二氧化钛光阳极的能带结构、光吸收特性、染料吸附量和电子传输过程的影响,介绍了近几年一维二氧化钛在染料敏化太阳能中的应用。最后,对一维二氧化钛在染料敏化太阳能电池中的应用进行了展望。
[Abstract]:Titanium dioxide is widely used in dye sensitized solar cells due to its advantages of suitable bandgap, good photoelectric performance and simple fabrication process. Most of the photoanodes are mainly composed of nanoparticles, but the nanoparticles are not conducive to the separation and transport of electrons and holes, and the photoconversion efficiency of dye sensitized solar cells is improved. Therefore, one dimensional nano-structure photoanode can be used to replace the nanoparticles, which is helpful to improve the photoconversion efficiency of dye sensitized solar cells. One-dimensional nanocrystalline materials have less grain boundaries, which can provide a channel for charge, accelerate electron transport, reduce hole / electron recombination, reduce electron and dye recombination, and improve the efficiency. At the same time, the larger specific surface area of one-dimensional titanium dioxide not only helps to increase the adsorption capacity of dyes, but also can effectively increase the current density. The latest research progress of several one-dimensional titanium dioxide preparation methods is reviewed. The effects of different preparation methods on the energy band structure, photoabsorption characteristics, dye adsorption capacity and electron transport process of TIO _ 2 photoanode are analyzed. The application of one-dimensional titanium dioxide in dye-sensitized solar energy in recent years is introduced. Finally, the application of one-dimensional titanium dioxide in dye-sensitized solar cells is prospected.
【作者单位】：湖北大学有机化工新材料湖北省协同创新中心功能材料绿色制备与应用教育部重点实验室;湖北大学材料科学与工程学院;
【基金】：湖北省科技厅项目(2016AAA034;2016CFB507) 国家自然科学基金(51572072;51603063;21402045)
【分类号】：TM914.4

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