Horizontal Silicon Nanowires with Radial p-n Junctions: A Platform for Unconventional Solar Cells

被引：44

作者：

Zhang, Xing ^{[1
]}

Pinion, Christopher W. ^{[1
]}

Christesen, Joseph D. ^{[1
]}

Flynn, Cory J. ^{[1
]}

Celano, Thomas A. ^{[1
]}

Cahoon, James F. ^{[1
]}

机构：

[1] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2013年 / 4卷 / 12期

关键词：

CORE-SHELL; SEMICONDUCTOR NANOWIRES; PHOTOVOLTAIC DEVICES; LIGHT-ABSORPTION; CARRIER; ARRAYS;

D O I：

10.1021/jz400533v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The silicon p-n junction is the most successful solar energy technology to date, yet it accounts for a marginal percentage of worldwide energy production. To change the status quo, a disruptive technological breakthrough is needed. In this Perspective, we discuss the potential for complex silicon nanowires to serve as a platform for next-generation photovoltaic devices. We review the synthesis, electrical characteristics, and optical properties of core/shell silicon nanowires that are subwavelength in diameter and contain radial p-n junctions. We highlight the unique features of these nanowires, such as optical antenna effects that concentrate light and intense built-in electric fields that enable ultrafast charge-carrier separation. We advocate a paradigm in which nanowires are arranged in periodic horizontal arrays to form ultrathin devices. Unlike conventional planar silicon, nanowire structures provide the flexibility to incorporate multiple semiconductor, dielectric, and metallic materials in a single system, providing the foundation for a disruptive, unconventional solar energy technology.

引用

页码：2002 / 2009

页数：8

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