Frequency-triggered circuit transition in organic light-emitting diodes probed by impedance spectroscopy
- Authors
- Park, Joon Hyung; Shin, Ye Ji; Kymissis, Ioannis; Jeon, Yongmin; Kim, Chang-Hyun
- Issue Date
- Jul-2023
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- JOURNAL OF MATERIALS CHEMISTRY C, v.11, no.28, pp.9670 - 9677
- Journal Title
- JOURNAL OF MATERIALS CHEMISTRY C
- Volume
- 11
- Number
- 28
- Start Page
- 9670
- End Page
- 9677
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88649
- DOI
- 10.1039/d3tc01171b
- ISSN
- 2050-7526
- Abstract
- We demonstrate frequency-triggered internal circuit transition in high-performance organic light-emitting diodes. Blue fluorescent light-emitting devices are fabricated based on a stable and efficient host-dopant material system. Broad-band impedance spectroscopy reveals that these diodes systematically undergo two abrupt spectral transitions at two bands of small-signal frequencies. Nyquist plots recorded over a wide range of conditions are fitted to an equivalent circuit model, decoupling the key interface and bulk parameters. The sharp conductance increases identified from this procedure are conceptually linked to the trap deactivation at specific cut-off frequencies, suggesting new opportunities for alternating-current applications of organic light-emitting diodes.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - IT융합대학 > 전자공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88649)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.