无机材料学报2017，Vol.32Issue(10)：1042-1048,7.DOI:10.15541/jim20160698
石墨烯量子点/CdS/CdSe共敏化太阳能电池
Graphene Quantum Dots/CdS/CdSe Co-Sensitized Solar Cells
摘要
Abstract
Using three-dimensional anatase TiO2microspheres as light scattering overlayer and commercial TiO2na-nocrystalline as connecting underlayer, novel double-layered TiO2films were prepared by a doctor blade method for quantum dots sensitized solar cell (QDSSC) application. The graphene quantum dots (GQDs) were introduced by dripping, and the CdS/CdSe quantum dots were deposited by continuous ion-layer adsorption (SILAR) method, re-spectively. The prepared quantum dots sensitized thin films were characterized by field emission scanning electron microscopy, transmission electron miscroscopy, X-ray diffraction, Uv-vis diffuse reflectance spectra, and fluorescence spectra. CdS/CdSe quantum dots sensitized and GQDs/CdS/CdSe co-sensitized solar cells were fabricated, respec-tively. And the effects of GQDs and CdS quantum dots with different deposition cycles on the microstructures and the photovoltaic performance of the double-layered TiO2QDSSCs were investigated and discussed. The results revealed that the introduced GQDs and the CdS deposition cycle obviously influenced the optical properties of the dou-ble-layered TiO2film. The electron transfer and charge-recombination process are also affected by the CdS deposition cycle and the introduced GQDs. Optimally, the conversion efficiency and photocurrent density of the TiO2/QGDs/CdS(4)/CdSe solar cell is 1.24% and 9.47 mA/cm2, respectively, which are higher than those (0.59% and 6.22 mA/cm2, respectively) of the TiO2/CdS(4)/CdSe cell. This is due to the effective electrons transport and reduced charge recombination within the co-sensitized cell.关键词
石墨烯量子点(GQDs)/CdS/CdSe量子点/TiO2微球/共敏化太阳能电池Key words
graphene quantum dots (GQDs)/CdS/CdSe quantum dots/TiO2microspheres/co-sensitized solar cells分类
化学化工引用本文复制引用
刘永强,黄浩,翟进生,马梦君,范佳杰..石墨烯量子点/CdS/CdSe共敏化太阳能电池[J].无机材料学报,2017,32(10):1042-1048,7.基金项目
国家自然科学基金(51402263,U1304514) National Natural Science Foundation of China (51402263,U1304514) （51402263,U1304514）
