Highly selective spectral response with enhanced responsivity of n-ZnO/p-Si radial heterojunction nanowire photodiodes
- Authors
- Um, Han-Don; Moiz, Syed Abdul; Park, Kwang-Tae; Jung, Jin-Young; Jee, Sang-Won; Ahn, Cheol Hyoun; Kim, Dong Chan; Cho, Hyung Koun; Kim, Dong-Wook; Lee, Jung-Ho
- Issue Date
- Jan-2011
- Publisher
- American Institute of Physics
- Keywords
- SOLAR-CELLS; FILMS
- Citation
- Applied Physics Letters, v.98, no.3, pp.1 - 3
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Physics Letters
- Volume
- 98
- Number
- 3
- Start Page
- 1
- End Page
- 3
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/38300
- DOI
- 10.1063/1.3543845
- ISSN
- 0003-6951
- Abstract
- A radial heterojunction nanowire diode (RND) array consisting of a ZnO (shell)/Si (core) structure was fabricated using conformal coating of a n-type ZnO layer that surrounded a p-type Si nanowire. In both ultraviolet (UV) and visible ranges, the photoresponsivity of the RND was larger than that of a planar thin film diode (PD) owing to the efficient carrier collection with improved light absorption. Compared to a PD, in the forward bias, a 6 mu m long RND resulted in a similar to 2.7 times enhancement of the UV responsivity at lambda = 365 nm, which could be explained based on the oxygen-related hole-trap mechanism. Under a reverse bias, UV-blind visible detection was observed while the UV response was suppressed. (c) 2011 American Institute of Physics. [doi:10.1063/1.3543845]
- Files in This Item
-
Go to Link
- Appears in
Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/38300)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.