Investigation into Photoconductivity in Single CNF/TiO2-Dye Core-Shell Nanowire Devices

被引：15

作者：

Li, Zhuangzhi ^{[2
,3
]}

Rochford, Caitlin ^{[1
]}

Baca, F. Javier ^{[4
]}

Liu, Jianwei ^{[5
]}

Li, Jun ^{[5
]}

Wu, Judy ^{[1
]}

机构：

[1] Univ Kansas, Dept Phys & Astron, Lawrence, KS 66045 USA

[2] Hebei Normal Univ, Dept Phys, Shijiazhuang 050016, Peoples R China

[3] Hebei Adv Thin Film Lab, Shijiazhuang 050016, Peoples R China

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[5] Kansas State Univ, Dept Chem, Manhattan, KS 66506 USA

来源：

NANOSCALE RESEARCH LETTERS | 2010年 / 5卷 / 09期

关键词：

Photoconductivity; Nanowire; Titanium dioxide; Dye-sensitized solar cell; Core-shell; SENSITIZED SOLAR-CELLS; ALIGNED CARBON NANOFIBERS; THIN-FILMS; NANOTUBE; ARRAYS; EFFICIENCY; TRANSPORT;

D O I：

10.1007/s11671-010-9665-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A vertically aligned carbon nanofiber array coated with anatase TiO2 (CNF/TiO2) is an attractive possible replacement for the sintered TiO2 nanoparticle network in the original dye-sensitized solar cell (DSSC) design due to the potential for improved charge transport and reduced charge recombination. Although the reported efficiency of 1.1% in these modified DSSC's is encouraging, the limiting factors must be identified before a higher efficiency can be obtained. This work employs a single nanowire approach to investigate the charge transport in individual CNF/TiO2 core-shell nanowires with adsorbed N719 dye molecules in dark and under illumination. The results shed light on the role of charge traps and dye adsorption on the (photo) conductivity of nanocrystalline TiO2 CNF's as related to dye-sensitized solar cell performance.

引用

页码：1480 / 1486

页数：7

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