Electro-optical modeling of InP nanowire solar cells: Core-shell vs. axial structure

Author

Yu, Shuqing ; Kupec, Jan ; Witzigmann, Bernd

Author_Institution

Comput. Electron. & Photonics Group, Univ. of Kassel, Kassel, Germany

fYear

2010

fDate

6-9 Sept. 2010

Firstpage

57

Lastpage

58

Abstract

We present an investigation of the photovoltaic effect in InP nanowire arrays for both axial and core-shell structures. A microscopic electro-optical model is used to analyze the currentvoltage relationships and cell efficiencies. It is found that coreshell structures provide a larger photocurrent and efficiency yet lower open circuit voltage than an axial structure. The analysis of the p-n junction operation explains this difference and gives design guidelines for nano-photovoltaic devices.

Keywords

III-V semiconductors; electro-optical effects; indium compounds; nanotechnology; nanowires; p-n junctions; photoconductivity; photovoltaic effects; semiconductor quantum wires; solar cells; InP; InP nanowire solar cells; axial structure; cell efficiencies; core-shell structure; current-voltage relationships; electrooptical modeling; nanophotovoltaic device; open circuit voltage; p-n junction operation; photocurrent; photovoltaic effect; Electric potential; Indium phosphide; Junctions; Lighting; Nanoscale devices; Photovoltaic cells; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2010 10th International Conference on

Conference_Location

Atlanta, GA

ISSN

2158-3234

Print_ISBN

978-1-4244-7016-7

Electronic_ISBN

2158-3234

Type

conf

DOI

10.1109/NUSOD.2010.5595667

Filename

5595667