Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Sensitive non-destructive real-time monitoring of blue OLED materials on extreme surface using terahertz near-field enhancement

Authors
Jeong, YeongkonLee, Sang-HunPark, Soo JongRoh, YeeunMoon, ByunghyuckLee, GeonKang, Shin WooJu, Byeong-KwonSeo, MinahJohn, Young Min
Issue Date
15-5월-2022
Publisher
ELSEVIER
Keywords
Terahertz spectroscopy; OLEDs; Extreme surface; Photodissociation; Non -destructive monitoring; Nano-metamaterials
Citation
APPLIED SURFACE SCIENCE, v.584
Indexed
SCIE
SCOPUS
Journal Title
APPLIED SURFACE SCIENCE
Volume
584
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/140802
DOI
10.1016/j.apsusc.2022.152611
ISSN
0169-4332
Abstract
Chemical degradation phenomenon of organic materials is fatal to commercial applications requiring high-efficiency and long-lifetime organic light-emitting diodes (OLEDs), but its mechanism is not fully understood yet. It is preferable to exclude all stimuli that may directly or indirectly affect the degradation process of the chemically unstable organic materials when investigating the materials. In this report, we introduce terahertz (THz) spectroscopy by taking advantage of low photon energy and deep penetration depth. We monitored the photo-degradation in DPEPO, mCBP, and mCP for blue light emission induced by photodissociation of the molecules. Measured THz transmittances present the aging process of the organic materials in a non-destructive manner. A nano-metamaterial-based sensing chip which induces strong field enhancement at the local surface was introduced for highly sensitive detection of chemical conformational change on extreme surfaces of tens of nanometer thickness. Our advanced non-destructive and real-time monitoring system is expected to contribute to the field of such organic materials for its fundamental scientific aspect as well as for its potential impact.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > School of Electrical Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Ju, Byeong kwon photo

Ju, Byeong kwon
공과대학 (전기전자공학부)
Read more

Altmetrics

Total Views & Downloads

BROWSE