PbS quantum dot sensitized anatase TiO2 nanocorals for quantum dot-sensitized solar cell applications
PbS quantum dot sensitized anatase TiO2 nanocorals for quantum dot-sensitized solar cell applications
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DOI：
10.1039/c2dt12464e
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发表时间：
2012-01-01
影响因子：
4
通讯作者：
Patil, Pramod S.
中科院分区：
文献类型：
--
作者：
Mali, Sawanta S.;Desai, Shital K.;Patil, Pramod S.
采用SILAR和水热技术合成了硫化铅（PbS）量子点（QD）敏化锐钛矿TiO2纳米珊瑚（TNC）。采用光学吸收、XRD、FT-IR、FESEM和XPS对TNC、PbS和PbS-TNC样品进行了表征。结果表明，将PbS量子点包覆在TNCs上，与普通TNCs相比，其光吸收增强，在340 nm处的带边位移接近693 nm。PbS-TNC样品的最大短路电流（J(sc)）为3.84 mA cm(-2)，其光电化学性能得到了改善。光电流密度比裸PbS光电极提高了2倍。PbS-TNC电极的总功率转换效率为1.23%。
Lead sulphide (PbS) quantum dot (QD) sensitized anatase TiO2 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 similar 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%.