Oxygen vacancy-induced red light emission from flexible inorganic micropatterned p-CuO/n-ZnO heterojunction light-emitting diode
- Authors
- Biswas, Pranab; Baek, Sung-Doo; Lee, Sang Hoon; Kim, Jong-Woo; Park, Ji-Hyeon; Lee, Su Jeong; Lee, Tae Il; Myoung, Jae-Min
- Issue Date
- 24-Oct-2016
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.109, no.17
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 109
- Number
- 17
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7782
- DOI
- 10.1063/1.4965974
- ISSN
- 0003-6951
- Abstract
- Fully inorganic flexible light-emitting diodes (LEDs) were demonstrated by using CuO nanorods (NRs) and ZnO NRs as the hole and electron transport materials, respectively. The heterojunctions were fabricated inside 5 mu m square patterns in order to achieve better flexibility. The current-voltage characteristic of the heterojunction revealed a typical p-n diode nature with an on-off ratio of 8.6 x 10(2) at 4 V, a turn-on voltage of 2.8 V, and a stable current flow at different voltage stress. The electroluminescence spectra from the LED at different forward bias exhibited eminent peak at around 710 nm corresponding to red light, which was in accordance with the deep-level emission of photoluminescence spectra of ZnO NRs. The Zn 2p and O 1s narrow-scan X-ray photoelectron spectra revealed that the deep levels are related to oxygen vacancies. The devices showed significant stability during bending test and continued to emit light beyond 1000 cycles of dynamic bending at a radius of curvature of 5 mm. Published by AIP Publishing.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 신소재공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/7782)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.