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Hybrid Silicon-Polymer Photodetector Engineered Using Oxidative Chemical Vapor Deposition for High-Performance and Bias-Switchable Multi-Functionality
- Title
- Hybrid Silicon-Polymer Photodetector Engineered Using Oxidative Chemical Vapor Deposition for High-Performance and Bias-Switchable Multi-Functionality
- Authors
- Kim H.; Zhang Y.; Rothschild M.; Roh K.; Kim Y.; Jang H.S.; Min B.-C.; Lee S.
- Ewha Authors
- 노광동
- SCOPUS Author ID
- 노광동
- Issue Date
- 2022
- Journal Title
- Advanced Functional Materials
- ISSN
- 1616-301X
- Citation
- Advanced Functional Materials vol. 32, no. 29
- Keywords
- black silicon; multimodal detection; oxidative chemical vapor deposition; photodetector; poly(3,4-ethylene dioxythiophene)
- Publisher
- John Wiley and Sons Inc
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Black silicon (b-Si) featured by anti-reflective surfaces is extensively studied to realize highly sensitive photodetectors. The key to augmenting the light-detection capability of b-Si is to facilitate charge extraction while limiting undesired recombination events at surface defects. To this end, oxidative chemical vapor deposition (oCVD) is leveraged to form a highly conformal and conductive (3000 S cm−1) organic transport layer, poly(3,4-ethylenedioxythiophene) (PEDOT), on b-Si nanostructures. The oCVD PEDOT instrumentally extracts photo-induced charges, through which b-Si photodetectors implementing oCVD PEDOT achieve a superior photo-detectivity of 1.37 × 1013 Jones. Furthermore, by engineering the pore dimension of b-Si, a mode-tunable Si photodetector is contrived, where the functions of broad-band and visible-blinded modes are switched facile by a bias polarity. The unprecedented device paves the way for extending the applications of Si detectors toward novel sensory platforms such as night-vision, motion tracking, and bio-sensing. © 2022 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH.
- DOI
- 10.1002/adfm.202201641
- Appears in Collections:
- 자연과학대학 > 물리학전공 > Journal papers
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