期刊
APPLIED PHYSICS LETTERS
卷 94, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3125435
关键词
electroluminescence; gallium arsenide; III-V semiconductors; molecular beam epitaxial growth; nanowires; photoconductivity; photovoltaic effects; semiconductor heterojunctions; semiconductor quantum wires
资金
- Marie Curie Excellence Grant
- Swiss National Science Foundation
Gallium arsenide p-i-n radial junctions were fabricated by molecular beam epitaxy. The current-voltage characteristics of single nanowires were measured in the dark and under various illumination conditions including 1.5 AM. The total efficiency was 4.5%. Spatially resolved and power dependent photocurrent measurements indicate that the p-i-n junction is homogeneous along the nanowire. Electroluminescence measurements show an emission peak at about 1.4 eV, further corroborating the good quality of the nanowire. These results constitute an important progress for the use of nanowires in photovoltaic applications.
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