Enhancement of the Hole Injection and Hole Transport in Organic Light Emitting Devices Utilizing a 2,3,5,6-Tetrafluoro-7,7,8,8-tetracyano-quinodimethane Doped Hole Transport Layer
- Authors
- Baek, Seung-Hyun; Kim, Chang-Uk; Choo, Dong Chul; Kim, Tae Whan; Park, Jung-hyun; Seo, Ji-Hyun; Kim, Young Kwan
- Issue Date
- Jan-2009
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- hole transport layer; impurity doping; organic light-emitting devices
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.498, pp.258 - 264
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 498
- Start Page
- 258
- End Page
- 264
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177385
- DOI
- 10.1080/15421400802619321
- ISSN
- 1542-1406
- Abstract
- While the current densities of hole only devices with a 2,3,5,6-tetrafluoro-7,7,8,8-tetracyano-quinodimethane (F-4-TCNQ) doped N,N'-bis-(1-naphthyl)- N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) hole transport layer (HTL) slightly changed with increasing F-4-TCNQ doping concentration, those of hole only devices with a F-4-TCNQ doped 4,4',4 ''-tris(N-(2-naphthyl)-Nphenylamino)triphenylamine (2-TNATA) HTL significantly increased. The hole injection and hole transport of hole only devices were enhanced by inserting an ultra thin F-4-TCNQ layer between an indium-tin-oxide layer and a NPB HTL or a 2-TNATA HTL, regardless of the HTL materials. These results indicate that the hole injection and hole transport in OLEDs utilizing a F-4-TCNQ doped HTL or a F-4-TCNQ thin layer is enhanced.
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