A periodic array of silicon pillars fabricated by photoelectrochemical etching
- Title
- A periodic array of silicon pillars fabricated by photoelectrochemical etching
- Author
- 조용우
- Keywords
- Photoelectrochemical etching; Silicon pillar array; Pore separation; Macroporous silicon; KOH post-etching
- Issue Date
- 2009-11
- Publisher
- Pergamon Press Ltd.
- Citation
- Electrochimica Acta, v. 54, NO. 27, Page. 6978-6982
- Abstract
- A periodic array of silicon pillars was photoelectrochemically fabricated using the two-step etching process with a n-type Si (1 0 0) substrate. Two key factors, backside illumination and anodic bias, were required to obtain a high-aspect ratio macropore array of silicon. It was found that the initial pore could be separated into two different pores when the applied anodic bias was greater than a certain critical value. The pore size of the macroporous silicon with a high porosity was increased by anisotropic etching in an alkaline solution. Due to destruction of the pore sidewalls, KOH etching allowed for the fabrication of silicon pillars on a large-scale wafer with an improved uniformity. The anisotropic etching behavior of KOH solution led to necking of the silicon pillars when the etching time exceeded 60 s. (C) 2009 Elsevier Ltd. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0013468609009207?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/183774
- ISSN
- 0013-4686;1873-3859
- DOI
- 10.1016/j.electacta.2009.06.094
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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