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Preparation of hybrid silicon wire and planar solar cells having ZnO antireflection coating by all-solution processes

Title
Preparation of hybrid silicon wire and planar solar cells having ZnO antireflection coating by all-solution processes
Authors
Baek, SH[Baek, Seong-Ho]Kim, SB[Kim, Seong-Been]Shin, JK[Shin, Jang-Kyoo]Kim, JH[Kim, Jae Hyun]
DGIST Authors
Baek, SH[Baek, Seong-Ho]; Kim, SB[Kim, Seong-Been]; Kim, JH[Kim, Jae Hyun]
Issue Date
2012-01
Citation
Solar Energy Materials and Solar Cells, 96(1), 251-256
Type
Article
Article Type
Article
Keywords
Anti-Reflection CoatingsCoatingsConversion EfficiencyEtchingHybrid Si Solar CellsHydrothermal SynthesisLight ReflectionMetal-Assisted Chemical EtchingNanorodsNatural LithographyPhotovoltaic EffectsSi Solar CellsSiliconSilicon WireSolar Power GenerationWireZinc CoatingsZinc OxideZnOZnO Antireflection
ISSN
0927-0248
Abstract
This report proposes newly designed all-solution based processes for fabricating hybrid silicon (Si) wire-planar solar cells having conformal zinc oxide (ZnO) nanorod anti-reflection coating (ARC). The all-solution processes were composed of three steps. First, metal-assisted chemical etching combined with natural lithography was used to fabricate ordered Si wire arrays. Second, spin-on-dopant (SOD) diffusion was introduced to make a pn junction in the Si wire arrays and bulk Si substrate. Finally, using hydrothermal synthesis, ZnO nanorods were grown on hybrid Si wire-planar solar cells to create an efficient ARC. Currentvoltage (IV) results show that the hybrid solar cells with ZnO ARC lead to increased power conversion efficiency by more than 25% compared to the planar solar cells. This is mainly attributed to the enhanced light absorption and reduced light reflection by the combination of Si wire geometry and ZnO ARC. This research demonstrates a new approach for lowering the cost of Si wire-based solar cells and making them applicable to photovoltaic devices with large areas. © 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/20.500.11750/3395
DOI
10.1016/j.solmat.2011.10.007
Publisher
Elsevier B.V.
Related Researcher
Files:
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Collection:
ETC1. Journal Articles


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