Open Access System for Information Sharing

Login Library

 

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

New blue phosphorescence from trifluorosulfonyl-substituted iridium complexes

Title
New blue phosphorescence from trifluorosulfonyl-substituted iridium complexes
Authors
HA, YEON HEESOHN, SUNYOUNGHAN, SEUNG-HOONKIM, BOND GONAHN, HYUNGJUJUNG, SUNGJUNEKWON, SOON-KIKIM, YUN-HI
POSTECH Authors
JUNG, SUNGJUNE
Date Issued
Apr-2019
Publisher
ELSEVIER SCI LTD
Abstract
For color-pure phosphorescence organic light emitting diodes (PHOLEDs), we synthesized the trifluoromethyl sulfonyl substituted ligand and two new blue Iridium complexes with perfluoro-sulfonyl group (SOCF3pic and SOCF3mpic). The both iridium complexes showed similar photophysical and thermal properties while the HOMO energy leves of two Iridium complexes slightly differnet to be −5.84 eV for SOCF3pic and −5.74 eV for SOCF3mpic, respectively. The device with the SOCF3mpic dopant exhibited higher device efficiencies of 7.17 cd/A and 3.7% compared to that with the SOCF3pic dopant (4.03 cd/A and 2.78%). Two-dimensional GIXD images of scattered X-ray intensity from surface to full depth for SOCF3pic-doped and SOCF3mpic-doped TCTA:4PTPS films were characterized for preferential orientation along the out-of-plane direction.
For color-pure phosphorescence organic light emitting diodes (PHOLEDs), we synthesized the trifluorometh) sulfonyl substituted ligand and two new blue Iridium complexes with perfluoro-sulfonyl group (SOCF(3)pic an, SOCF(3)mpic). The both iridium complexes showed similar photophysical and thermal properties while the HON energy leves of two Iridium complexes slightly differnet to be -5.84 eV for SOCF(3)pic and -5.74 eV fa SOCF(3)mpic, respectively. The device with the SOCF(3)mpic dopant exhibited higher device efficiencies of 7.17 cd A and 3.7% compared to that with the SOCF(3)pic dopant (4.03 cd/A and 2.78%). Two-dimensional GIXD image of scattered X-ray intensity from surface to full depth for SOCF(3)pic-doped and SOCF(3)mpic-doped TCTA:4PTP films were characterized for preferential orientation along the out-of-plane direction.
Keywords
LIGHT-EMITTING-DIODES; EXTERNAL QUANTUM EFFICIENCY; III COMPLEXES; EMISSION; PHOTOPHYSICS; ORIENTATION; EMITTERS; LIGANDS; DESIGN
URI
http://oasis.postech.ac.kr/handle/2014.oak/94615
DOI
10.1016/j.dyepig.2018.12.062
ISSN
0143-7208
Article Type
Article
Citation
DYES AND PIGMENTS, vol. 163, page. 684 - 691, 2019-04
Files in This Item:
There are no files associated with this item.

qr_code

  • mendeley

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

Related Researcher

Researcher

 JUNG, SUNGJUNE
Dept. of Creative IT Engin.
Read more

Altmetric

Views & Downloads

Browse