Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications

被引：52

作者：

Cheng, Kai-Chun ^{[1
]}

Law, Wing-Cheung ^{[2
]}

Yong, Ken-Tye ^{[3
]}

Nevins, Jeremy S. ^{[2
]}

Watson, David F. ^{[2
]}

Ho, Ho-Pui ^{[1
]}

Prasad, Paras N. ^{[2
]}

机构：

[1] Chinese Univ Hong Kong, Adv Photon Res Ctr, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[2] SUNY Buffalo, Inst Lasers Photon & Biophoton, Buffalo, NY 14260 USA

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

CHEMICAL PHYSICS LETTERS | 2011年 / 515卷 / 4-6期

关键词：

MULTIPLE EXCITON GENERATION; NANOCRYSTALLINE TIO2; SEMICONDUCTOR NANOCRYSTALS; ORGANIC SENSITIZERS; ELECTRON INJECTION; CDS; EFFICIENCY; LIGHT; FILMS; NANOPARTICLES;

D O I：

10.1016/j.cplett.2011.09.027

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the use of silver-indium-sulfide (AgInS2) quantum dots (QDs) as heavy metal-free photosensitizer for QDs-sensitized solar cell. For fabricating the TiO2/AgInS2 electrode, the QDs were attached to a mesoporous TiO2 surface by using bifunctional linker molecules. The fabricated TiO2/AgInS2 electrode exhibits light absorption in the visible region and serves as the photoanode. Upon bandgap excitation, injection of photoexcited electrons from AgInS2 QDs into the TiO2 matrix produces photocurrents accordingly. The proof-of-concept AgInS2 QDs-sensitized solar cell exhibits a short-circuit current of 0.49 mA/cm2 and open-circuit voltage of 0.24 V, under one sun illumination. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：254 / 257

页数：4

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