Ag2Se quantum-dot sensitized solar cells for full solar spectrum light harvesting

被引：85

作者：

Tubtimtae, Auttasit ^{[1
,2
]}

Lee, Ming-Way ^{[1
,2
]}

Wang, Gou-Jen ^{[3
,4
]}

机构：

[1] Natl Chung Hsing Univ, Inst Nanosci, Taichung 402, Taiwan

[2] Natl Chung Hsing Univ, Dept Phys, Taichung 402, Taiwan

[3] Natl Chung Hsing Univ, Dept Mech Engn, Taichung 402, Taiwan

[4] Natl Chung Hsing Univ, Inst Biomed Engn, Taichung 402, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2011年 / 196卷 / 15期

关键词：

Silver selenide; Quantum dot; Solar cell; Successive ionic layer adsorption and reaction deposition; TIO2; CDS; NANOCRYSTALS; ENERGY;

D O I：

10.1016/j.jpowsour.2011.03.074

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 on the photovoltaic performance of Ag2Se quantum-dot (QD) sensitized solar cells. The QDs are grown by the successive ionic layer adsorption and reaction process. The external quantum efficiency (EQE) spectrum of the assembled cells covers the entire solar power spectrum of 350-2500 nm with an average EQE of similar to 80% in the short-wavelength region (350-800 nm) and 56% over the entire solar spectrum. The effective photovoltaic range is similar to 7-14 times broader than that of the cadmium calcogenide system-CdS and CdSe. The photocurrent that Ag2Se generates is four times higher than that of N3 dye. The best solar cell yields power conversion efficiencies of 1.76% and 3.12% under 99.4% and 9.7% sun, respectively. The results show that Ag2Se QDs can be used as a highly efficient broadband sensitizer for solar cells. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：6603 / 6608

页数：6

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