期刊
PROGRESS IN PHOTOVOLTAICS
卷 19, 期 3, 页码 307-312出版社
WILEY
DOI: 10.1002/pip.1027
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资金
- IBM Research
- Government of the Arab Republic of Egypt through the Egypt Nanotechnology Center (EGNC)
- NSF [DMR 0846573]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0846573] Funding Source: National Science Foundation
Nano/micro-wire silicon solar cells, consisting of wire-arrays of radial p-n junction structures, are expected to offer performance enhancement at lower costs, using smaller volumes of low carrier lifetime, cheaper silicon. Using inexpensive microsphere-lithography-based fabrication that is scalable to large areas, we have demonstrated wire-array solar cells that outperform the control cell. Key to the design of these cells is the impact of various parameters, such as wire diameter and junction depth, that influences the competing effects of light trapping ability of the wire-array, quantum efficiency, and series resistance of the resulting device. Using capacitance measurements we can identify two possible types of junction structure in a wire-array solar cell: radial and planar. We show that the former is the prerequisite for performance-enhancing wire-array solar cells. Copyright (C) 2010 John Wiley & Sons, Ltd.
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