Photon management with core-shell nanowire structures

被引：3

作者：

Lai, Kun-Yu ^{[1
,2
]}

Chang, Hung-Chih ^{[1
]}

Dai, Yu-An ^{[1
]}

He, Jr-Hau ^{[1
,3
]}

机构：

[1] Natl Taiwan Univ, Inst Photon & Optoelect, Taipei 10617, Taiwan

[2] Natl Cent Univ, Dept Opt & Photon, Chungli 320, Taiwan

[3] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 06期

关键词：

ZNO NANOROD ARRAYS; SOLAR-CELLS; SILICON NANOWIRES; PHOTOVOLTAIC APPLICATIONS; OPTICAL-ABSORPTION; BROAD-BAND; SI; ENHANCEMENT; OXIDATION; CARRIER;

D O I：

10.1364/OE.20.00A255

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Antireflective Si/oxide core-shell nanowire arrays (NWAs) were fabricated by galvanic etching and subsequent annealing process. The excellent light-harvesting characteristics of the core-shell NWAs, such as broadband working ranges, omnidirectionality, and polarization-insensitivity, ascribed to the smooth index transition from air to the substrates, have been demonstrated. By tuning core-shell volume ratios, we obtained enhanced light trapping regions implemented in either the planar Si underneath NWAs or the core regions of NWAs, greatly benefiting the geometry design of planar and radial p-n junction cell structures, respectively. This photon management scheme indicates the potential use in nanostructured photovoltaic applications. (C) 2012 Optical Society of America

引用

页码：A255 / A264

页数：10

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