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Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells

Title
Comparative experimental and simulative investigations of radial p-n junction Si microwire array solar cells
Authors
Lee, E[Lee, Eunsongyi]Kim, Y[Kim, Yoonjung]Gwon, M[Gwon, Minji]Kim, DW[Kim, Dong-Wook]Baek, SH[Baek, Seong-Ho]Kim, JH[Kim, Jae Hyun]
DGIST Authors
Kim, JH[Kim, Jae Hyun]
Issue Date
2012-08
Citation
Solar Energy Materials and Solar Cells, 103, 93-97
Type
Article
Article Type
Article
Keywords
Carrier CollectionComparative StudiesConversion EfficiencyElectrolessElectroless EtchingEtchingJunction AreaMicrowireMicrowire ArrayOptical CharacteristicsOptical ReflectanceP-N JunctionRadial P-N JunctionSemiconductor JunctionsSiliconSilicon MicrowireSolar CellsTrap StateWavelength Ranges
ISSN
0927-0248
Abstract
We carried out experimental and simulative investigations of the electrical and optical characteristics of radial p-n junction Si microwire (MW) array solar cells (diameter: 4 μm, height: 12 μm, and period: 12 μm) prepared by electroless etching (EE) methods. Due to its unique geometry, the MW array had an enlarged junction area, enabling efficient carrier collection and optical reflectance in the wavelength range from 400 to 1000 nm, which is lower than that of its planar counterpart. Despite these advantages, the energy conversion efficiency (CE) of the MW array solar cell (3.2%) was lower than that of a planar solar cell (4.2%). This comparative study clearly reveals the inherent potential of MW-based solar cells and the importance of extrinsic trap state control to realize low-cost, high-efficiency devices. © 2012 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3348
DOI
10.1016/j.solmat.2012.04.023
Publisher
Elsevier B.V.
Related Researcher
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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