CdSe@CdS Core-Shell Quantum Dot-Polymer Multilayer Sensitized TiO2 for Photovoltaics

被引：12

作者：

Cui, Yan ^{[1
]}

Chen, Hongyue ^{[1
]}

Zheng, Min ^{[1
]}

Dai, Zhifei ^{[2
]}

Liu, Shaoqin ^{[1
]}

机构：

[1] Harbin Inst Technol, Minist Educ, Key Lab Microsyst & Microstruct Mfg, Harbin 150080, Peoples R China

[2] Harbin Inst Technol, State Key Lab Urban Water Resources & Environm, Nanobiotechnol Div, Harbin 150080, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 05期

基金：

美国国家科学基金会;

关键词：

CdSe@CdS Core-Shell Quantum Dots; TiO2; Films; Layer-by-Layer Deposition; QD-Sensitized Solar Cells; SELF-ASSEMBLED STRUCTURES; INFRA-RED SPECTRA; SOLAR-CELLS; SEMICONDUCTOR NANOCRYSTALS; ELECTRON; SIZE; PHOTOELECTROCHEMISTRY; PHOTOSENSITIZATION; DEPOSITION; EFFICIENCY;

D O I：

10.1166/jnn.2011.3876

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Colloidal CdSe@CdS core-shell quantum dots (QDs) have been prepared and exploited as inorganic dyes to sensitize a large-band-gap TiO2 layer for QD-sensitized solar cells. The sensitized films were prepared by alternating the layer-by-layer deposition of water-soluble semiconductor QDs and polycations over mesoscopic TiO2 films. The multilayer build-up, monitored by UV-vis spectroscopy shows an increase in the film absorbance with the number of adsorbed CdSe@CdS layers. The photoluminescence (PL) and photoelectrochemical properties of the multilayers were investigated. The photovoltaic performance of QD-sensitized solar cells is strongly dependent on the film structure and component. The incorporation of the electron mediators of [Co(Phen)(3)](2+) during the deposition process remarkably enhanced the photocurrent intensity in comparison to that in case of QD/polyelectrolyte multilayers.

引用

页码：3851 / 3860

页数：10

共 48 条

[1] Electron and hole transfer from indium phosphide quantum dots [J].