Composite electrolytes of polyethylene glycol methyl ether and TiO2 for dye-sensitized solar cells-Effect of heat treatment

被引：7

作者：

Akhtar, M. Shaheer ^{[1
,2
,3
]}

Park, Jung-Guen ^{[1
,2
]}

Kim, Ui-Yeon ^{[1
,2
]}

Yang, O-Bong ^{[1
,2
,3
]}

机构：

[1] Chonbuk Natl Univ, Sch Semicond & Chem Engn, Jeonju 561756, Jeonbuk, South Korea

[2] Chonbuk Natl Univ, Solar Energy Res Ctr, Jeonju 561756, Jeonbuk, South Korea

[3] Chonbuk Natl Univ, New & Renewable Energy Mat Dev Ctr, Jeonju 561756, Jeonbuk, South Korea

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 127卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

Composite electrolyte; Polymer; Heat treatment; Atomic force microscopy (AFM); SOLID-STATE; POLYMER ELECTROLYTES; GEL ELECTROLYTES; IODIDE; TEMPERATURE; DIFFUSION; TRANSPORT; RAMAN;

D O I：

10.1016/j.matchemphys.2011.02.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

For solid-state dye-sensitized solar cells (DSSCs), a composite electrolyte of polyethylene glycol methyl ether (PEGME) and titania (TiO2) nanoparticles was prepared and characterized by Fourier transform-infra red (FT-IR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM) and Raman spectroscopy. The heat treatment on PEGME and TiO2 composite was found to be an essential step to improve morphology, amorphicity and ionic conductivity of PEGME-TiO2 composite electrolytes. It was attributed to the increased bond strength of OC-O-Ti between PEGME and TiO2 and increased surface roughness of composite materials, which may help to absorb a large amount of iodide couple and effective generation of I-3(-) ions. A DSSC fabricated with heat treated PEGME-TiO2 composite electrolyte showed significantly enhanced overall conversion efficiency of 3.1%, which was 20% higher than that of the DSSC fabricated with bare PEGME-TiO2 composite electrolyte. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：479 / 483

页数：5

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