Broadband enhancement of optical absorption in a silicon nanowire flexible thin film
- Title
- Broadband enhancement of optical absorption in a silicon nanowire flexible thin film
- Author
- 이정호
- Keywords
- Silicon; Nanowires; Optical absorption; Thin films; Surface plasmon polariton
- Issue Date
- 2014-11
- Publisher
- Elsevier Sequoia
- Citation
- Thin Solid Films, v. 570, Page. 75-80
- Abstract
- A silicon nanowire (SiNW) array was embedded into a polydimethylsiloxane matrix to fabricate a flexible thin film solar cell in which a rugged metallic back surface was formed at the bottom. Superior light scattering of the randomly arrayed SiNWs significantly improved the light absorptance in a short wavelength region (lambda<700 nm). The rugged morphology of metallic back surface excited the surface plasmon polaritons (SPPs) along the interface between the metal and Si, which showed a plasmonic potential to enhance light absorption in a longwavelength region (lambda> 700nm). This featurewas attributed to the threemajor routes for light trapping: back reflection, SPP resonance, and SPP scattering. This nanowire thin film showing the rugged back surface yielded the light absorption of similar to 92.6% using only similar to 5% of silicon required for conventional crystalline solar cells. (C) 2014 Elsevier B.V. All rights reserved.
- URI
- https://www.sciencedirect.com/science/article/pii/S0040609014008967?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/181350
- ISSN
- 0040-6090
- DOI
- 10.1016/j.tsf.2014.09.018
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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