Title :
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
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;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices (NUSOD), 2010 10th International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-7016-7
Electronic_ISBN :
2158-3234
DOI :
10.1109/NUSOD.2010.5595667
