期刊
JOURNAL OF POWER SOURCES
卷 302, 期 -, 页码 266-273出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2015.10.070
关键词
Sensitized solar cells; CdSexTe1-x alloyed quantum dots; Mn doped CdSe; Interface modification
资金
- MOST (973 projects) [2012CB932903, 2012CB932904]
- NSFC [91433205, 51372270, 51402348, 51421002, 21173260, 11474333, 91233202]
- Knowledge Innovation Program of the Chinese Academy of Sciences
CdSexTe1-x alloyed colloidal quantum dots show great potential application on quantum dot-sensitized solar cells (QDSCs) due to its relatively wide light absorption range and high chemical stability. In this respect, a thin Mn modified CdSe layer is introduced into TiO2/CdSexTe1-x alloyed QDs surface via a simple chemical bath deposition method (CBD) in order to further improve the cell performance. The power conversion efficiency of CdSexTe1-x QDSCs has been improved to 8.14%. Detailed investigation on the influence of this modification toward the TiO2/CdSexTe1-x interface on the cell performance reveals that introduction of Mn into CdSe QDs is found to facilitate the Mn-doped CdSe deposition and improve the light absorption of the device. In the meantime, the existence of the (Mn-)CdSe layer can also work as a passivation layer to reduce charge recombination. (C) 2015 Elsevier B.V. All rights reserved.
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