bi2s3量子点敏化tio2太阳能电池的制备和性能分析word格式论文.docxVIP

优秀毕业论文 精品参考文献资料 Abstract As one of new source ,solar cells have reached much attention nowadays for its cleanness low cost，and endlessness. In this paper，we accounted the rationale、structure、 problem of the Quantum Dot-sensitized solar cell.We prepared solar cells using Bi2S3 to sensitized Ti02,and done some performance optimization working. As a kind of cheap and safe semiconductor material，Ti02 has been extensively investigated in the filed of solar cells．But it can’t absorb the solar effectively for its wide band—gap．One way to solve this problem is to use arrow band—gap semiconductor material to sensitize it．As non-toxic compound, Bi2S3 with the band-gap of 1.3ev and high absorption coefficient on the order of 105 cm-1 is a typical semiconductor material to sensitize Ti02 electroders. Three main parts were involved in the study：in-situ growth of Bi2S3 onto the nanoporous TiO2 films. Testing of the photoelectrochemistry of the photoelectrodes found that the increasing of deposition cycles,the amount of light absorptions increased,but the recombination of the electron-hole pairs becomed more serious,which resulted the photocurrent density and the power conversion efficiency increased first but then reduced. Exploring the performance changement of the annealed and the ZnS treated solar cell.We found that the performance of the cell become better after annealed and the ZnS treated respectively. Use solid-state CuSCN as electrolyte and TiO2 nanorod arrays to assemble solar cell.for studying optical and electrical properties. This paper include the synthesis of the materials、assembling of the solar cell and the performance of the cell.We also the reason of some phenomenon. Keyword: Quantum Dot-sensitized solar cell photoelectrochemistry Bi2S3 annealed ZnS  PAGE 4 目 录 摘 要 I  HYPERLINK \l _bookmark0 Abstract II 1 绪论  HYPERLINK \l _bookmark1 1.1 引言 (1)  HYPERLINK \l _bookmark2 1.2 太阳能电池的分类 (1)  HYPERLINK \l _bookmark3 1.3 量子点敏化太阳能电