基于掺杂的染料敏化电池光阳极性能的研究进展
Advances on doping in photoanode performance of dye-sensitized solar cell
王锐 1朵永超 1张曙林 1牛家嵘 1金欣 2王闻宇1
作者信息
- 1. 天津工业大学纺织科学与工程学院,天津 300387
- 2. 天津工业大学材料科学与工程学院,天津 300387
- 折叠
摘要
纳米TiO2 半导体材料具有较高的禁带宽度和良好的耐光腐蚀性,被认为是最具有发展潜力的太阳能电池的光阳极材料,但二氧化钛存在禁带宽度大且激发波长短、光生电子容易复合等问题,在很大程度上阻碍了人们对提高染料敏化太阳能电池光电效率的研究.适当的金属和非金属掺杂剂可改善二氧化钛的内部结构,引入杂质能级和缺陷位置或替代晶格阵点上的氧原子,导致材料的表面结构和电子态发生变化,进一步促进了光生电子和空穴的分离,抑制了它们的复合,从而拓宽了可见光谱的响应范围并提高了光电性能.从掺杂剂种类入手,分别从金属掺杂、非金属掺杂和金属非金属共掺杂3 个方面对掺杂机理进行梳理总结,并对未来研究方向进行展望.
Abstract
Nano TiO2 semiconductor material possesses a large band gap width and excellent resistance to photo-corrosion,thus being considered as the most promising photoanode material for solar cell.However,titanium dioxide shows some problems such as wide band gap,short excitation wavelength as well as the easily recombined photogenerated electrons,which greatly hinders research on improving the photoelectrical efficiency of dye-sensitized solar cell.Appropriate metals and non-metal dopants can improve the internal structure of titanium dioxide,inserting impurity energy levels and defect positions,or substituting oxygen atoms on the lattice sites,leading to changes in the material's surface structure and electronic states.This further promotes the separation of photogenerated electrons and holes,suppresses their recombination,thereby broadening the response range of the visible light spectrum and enhancing the photoelectrical performance.This article systematically summarizes the doping mechanism from the perspective of dopant types,namely,metals doping,non-metals doping,and co-doping of metal and non-metal,and proposes prospects for future research directions.
关键词
染料敏化/太阳能电池/光阳极/掺杂/光电性能/二氧化钛Key words
dye sensitized/solar cell/photoanode/doping/optoelectronic performance/TiO2引用本文复制引用
出版年
2024
NETL
NSTL
万方数据