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National Chung Hsing University Institutional Repository - NCHUIR > 理學院 > 物理學系所 > 依資料類型分類 > 期刊論文 >  Ag(2)Se quantum-dot sensitized solar cells for full solar spectrum light harvesting

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/126759

標題: Ag(2)Se quantum-dot sensitized solar cells for full solar spectrum light harvesting
作者: Tubtimtae, Auttasit;Lee, Ming-Way;Wang, Gou-Jen
Contributors: 國立中興大學物理學系
National Chung Hsing University,Department of Physics
Miao-zhen Luo
關鍵字: Silver selenide;Quantum dot;Solar cell;Successive ionic layer;adsorption and reaction deposition;tio2;nanocrystals;cds;energy;films
日期: 2011-8
Issue Date: 2012-10-26 14:32:23 (UTC+8)
摘要: We report on the photovoltaic performance of Ag(2)Se 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 Ag(2)Se 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 Ag(2)Se QDs can be used as a highly efficient broadband sensitizer for solar cells. (C) 2011 Elsevier B.V. All rights reserved.
Relation: Journal of Power Sources, Volume 196, Issue 15, Page(s) 6603-6608.
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