PbS 量子点敏化锐钛矿 TiO2 纳米珊瑚用于量子点敏化太阳能电池应用。

PbS quantum dot sensitized anatase TiO2 nanocorals for quantum dot-sensitized solar cell applications.

机构信息

Thin Film Materials Laboratory, Dept. of Physics, Shivaji University, Kolhapur, 416004, India.

出版信息

Dalton Trans. 2012 May 28;41(20):6130-6. doi: 10.1039/c2dt12464e. Epub 2012 Apr 10.

Abstract

Lead sulphide (PbS) quantum dot (QD) sensitized anatase TiO(2) nanocorals (TNC) were synthesized by SILAR and hydrothermal techniques. The TNC, PbS and PbS-TNC samples were characterized by optical absorption, XRD, FT-IR, FESEM and XPS. The results show that PbS QDs are coated on the TNCs, the optical absorption is found to be enhanced and the band edge is shifted to ~693 nm as compared with plain TNCs at 340 nm. The PbS-TNC sample exhibits an improved photoelectrochemical performance with a maximum short circuit current (J(sc)) of 3.84 mA cm(-2). The photocurrent density was found to be enhanced 2 fold, as compared with those of the bare PbS photoelectrode. The total power conversion efficiency of the PbS-TNC electrodes is 1.23%.

摘要

硫化铅 (PbS) 量子点 (QD) 敏化锐钛矿 TiO(2) 纳米珊瑚 (TNC) 通过 SILAR 和水热技术合成。TNC、PbS 和 PbS-TNC 样品通过光学吸收、XRD、FT-IR、FESEM 和 XPS 进行了表征。结果表明，PbS QD 覆盖在 TNC 上，与纯 TNC 相比，在 340nm 处的光学吸收增强，能带边缘向~693nm 移动。PbS-TNC 样品表现出改进的光电化学性能，最大短路电流 (J(sc)) 为 3.84mAcm(-2)。与裸 PbS 光电电极相比，光电流密度提高了 2 倍。PbS-TNC 电极的总功率转换效率为 1.23%。