Co-sensitization of TiO2 by PbS quantum dots and dye N719 in dye-sensitized solar cells

被引：64

作者：

Liu, Yanqiong ^{[1
]}

Wang, John ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci & Engn, Fac Engn, Singapore 117574, Singapore

来源：

THIN SOLID FILMS | 2010年 / 518卷 / 24期

关键词：

PbS; Quantum Dot (QD); DSSC; N719; Co-sensitization; CDS; ELECTRODES;

D O I：

10.1016/j.tsf.2010.03.126

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

PbS quantum dots (QDs) were prepared by an in-situ chemical bath deposition method, where the QD size is manipulated by adjusting the dipping time in the respective Pb2+ and S2- ion solutions. They are characterized by using XPS and UV-visible absorption. The photovoltaic performances of the dye-sensitized solar cells constructed from PbS-sensitized TiO2, N719-sensitized TiO2 and co-sensitized TiO2 have been evaluated. PbS QDs are shown to elevate the open circuit voltage (V-oc) and consequently increase the efficiency from 5.95% by N719-sensitized TiO2, to 6.35%, by the co-sensitized TiO2. The operating mechanism involved in the co-sensitization is presented and discussed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：E54 / E56

页数：3

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