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Augmentation of absorption channels induced by wave-chaos effects in free-standing nanowire arrays

Title
Augmentation of absorption channels induced by wave-chaos effects in free-standing nanowire arrays
Authors
Kim, Ji-HwanKang, Sung BumYu, Hyeon-HyeKim, JaewonRyu, JinhyeokLee, Ji-WonChoi, Kyoung JinKim, Chil-MinYi, Chang-Hwan
DGIST Authors
Kim, Ji-Hwan; Kang, Sung Bum; Yu, Hyeon-Hye; Kim, Jaewon; Ryu, Jinhyeok; Lee, Ji-Won; Choi, Kyoung Jin; Kim, Chil-Min; Yi, Chang-Hwan
Issue Date
2020-08
Citation
Optics Express, 28(16), 23569-23583
Type
Article
Article Type
Article
Keywords
PHOTOVOLTAIC DEVICESLIGHT-ABSORPTIONENHANCEMENTCOLOR
ISSN
1094-4087
Abstract
Plenty of issues on quantal features in chaotic systems have been raised since chaos was accepted as one of the intrinsic properties of nature. Through intensive studies, it was revealed that resonance spectra in chaotic systems exhibit complicated structures, which is deeply concerned with sophisticated resonance dynamics. Motivated by these phenomena, we investigate light absorption characteristics of chaotic nanowires in an array. According to our results, a chaotic cross-section of a nanowire induces a remarkable augmentation of absorption channels, that is, an increasing number of absorption modes leads to substantial light absorption enhancement, as the deformation of cross-section increases. We experimentally demonstrate the light absorption enhancement with free-standing Si-nanowire polydimethylsiloxane (PDMS) composites. Our results are applicable not only to transparent solar cells but also to complementary metal-oxide-semiconductor (CMOS) image sensors to maximize absorption efficiency. © 2020 Optical Society of America.
URI
http://hdl.handle.net/20.500.11750/12633
DOI
10.1364/OE.398687
Publisher
Optical Society of America
Related Researcher
  • Author Kim, Chil-Min Micro Laser Laboratory
  • Research Interests Laser; Nonlinear Dynamics; Quantum Chaos; Microcavity Laser
Files:
Collection:
Department of Emerging Materials ScienceMicro Laser Laboratory1. Journal Articles


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