Platinum Nanoparticle Decorated Silicon Nanowires for Efficient Solar Energy Conversion

被引：232

作者：

Peng, Kui-Qing ^{[1
,2
]}

Wang, Xin ^{[1
,2
]}

Wu, Xiao-Ling ^{[1
,2
]}

Lee, Shuit-Tong ^{[3
,4
]}

机构：

[1] Beijing Normal Univ, Key Lab Beam Technol & Mat Modificat, Minist Educ, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Dept Phys, Beijing 100875, Peoples R China

[3] City Univ Hong Kong, COSDAF, Hong Kong, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

来源：

NANO LETTERS | 2009年 / 9卷 / 11期

基金：

中国国家自然科学基金;

关键词：

LIGHT-SCATTERING; ZNO NANOWIRES; ARRAYS; SINGLE; CELLS; NANOTUBES; SI;

D O I：

10.1021/nl901734e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-density aligned n-type silicon nanowire (SiNW) arrays decorated with discrete 5-10 nm platinum nanoparticles (PtNPs) have been fabricated by aqueous electroless Si etching followed by an electroless platinum deposition process. Coating of PtNPs on SiNW sidewalls yielded a substantial enhancement in photoconversion efficiency and an apparent energy conversion efficiency of up to 8.14% for the PtNP-decorated SiNW-based photoelectrochemical solar cell using a liquid electrolyte containing Br-/Br-2 redox couple. The results demonstrate PtNP-decorated SiNWs to be a promising hybrid system for solar energy conversion.

引用

页码：3704 / 3709

页数：6

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