Enhancement of the efficiency in color-stabilized green organic light-emitting devices utilizing a hole-blocking layer between a hole transport layer and an emission layer
- Authors
- Kim, Chang Uk; Choo, Dong Chul; Kim, Tae Whan; Han, Sang Min; Kim, Kyung Pil; Kim, Jun Ho; Seo, Ji Hyun; Kim, Young Kwan
- Issue Date
- Jan-2007
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- color stabilized; efficiency; hole blocking layer; organic light-emitting devices
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.470, pp.289 - 296
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 470
- Start Page
- 289
- End Page
- 296
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180557
- DOI
- 10.1080/15421400701496037
- ISSN
- 1542-1406
- Abstract
- The efficiency of the organic light-emitting devices (OLEDs) with a 2,9-dimethyl-4,7-diphenylphenanthroline (BCP) hole blocking layer (HBL) between a N, N'-bis-(1-naphthyl)-N, N'-diphenyl-1, 1'-biphenyl-4,4'-diamine (NPB) hole transport layer (HTL) and a tris-(8-hydroxyquinoline) aluminum (Alq3) emitting layer (EML) was higher than that of the OLEDs without a HBL. The dominant electroluminescence (EL) peak corresponding to the Alq3 layer for the OLEDs with a BCP HBL between a NPB HTL and an Alq3 EML appeared at the almost same position as the EL peak for the OLEDs without a HBL. The Commission Internationale de l'Eclairage chromaticity coordinates of the OLEDs corresponded to a stabilized green color, regardless of the existence of the BCP HBL layer.
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