Effect of Charge-transporting Molecules on Electrophosphorescence in a Device Fabricated Using Third-generation Dendrimer Encapsulated Tris[2-benzo[b]thiophen-2-ylpyridyl]iridium Complex
- Authors
- Jung, Kyung Moon; Lee, Tae Wan; Kim, Kyung Hwan; Cho, Min Ju; Jin, Jung-Il; Choi, Dong Hoon
- Issue Date
- 5-4월-2009
- Publisher
- CHEMICAL SOC JAPAN
- Citation
- CHEMISTRY LETTERS, v.38, no.4, pp.314 - 315
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY LETTERS
- Volume
- 38
- Number
- 4
- Start Page
- 314
- End Page
- 315
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/120250
- DOI
- 10.1246/cl.2009.314
- ISSN
- 0366-7022
- Abstract
- We have synthesized a new deep-red light-emitting phosphorescent third-generation dendrimer with hole-transporting carbazole dendrons. The new dendrimer is highly efficient when used as a solution-processable emitting material and when used in an electrophosphorescent light-emitting diode system. We selected 4,4'-bis(9-carbazolyl)-1,1'-biphenyl (CBP) and 2-(1,1'biphenyl-4-yl)-5-(4-tert-butylphenyl)- 1,3,4-oxadiazole (PBD) as guest molecules in order to manipulate the carrier transport and carrier confinement in the emissive layer. We fabricated a dendrimer light-emitting diode (DLED) whose configuration is represented as ITO/PEDOT:PSS (40 nm)/dendrimer containing guest molecules (55 nm)/BCP (2,9-dimethyl-4,7-diphenylphenanthroline) (10 nm)/Alq(3) (40 nm)/LiF (1 nm)/Al (100 nm) and investigated the device performance. The luminance of the multilayered devices fabricated using the PBD-containing dendrimer was 381 cd/m(2) at 52.42 mA/cm(2) (20 V) for the dendrimer hearing PBD, which was slightly better than that of a device fabricated using dendrimer alone.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Chemistry > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.