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High performance top-emitting organic light-emitting diodes with copper iodide-doped hole injection layer
Cited 58 time in
Web of Science
Cited 60 time in Scopus
- Authors
- Issue Date
- 2008-05-27
- Publisher
- Elsevier
- Citation
- Organic Electronics 9 (805) (2008)
- Keywords
- Top-emitting OLEDs ; CuI ; Ag electrode ; Lambertian
- Abstract
- Efficient top-emitting organic light-emitting diodes were fabricated using copper iodide (CuI) doped 1,4-bis[N-(1-naphthyl)-N′-phenylamino]-4,4′-diamine (NPB) as a hole injection layer and Ir(ppy)3 doped CBP as the emitting layer. CuI doped NPB layer functions as an efficient p-doped hole injection layer and significantly improves hole injection from a silver bottom electrode. The top-emitting device shows high current efficiency of 69 cd/A with Lambertian emission pattern. The enhanced hole injection is originated from the formation of the charge transfer complex between CuI and NPB.
- ISSN
- 1566-1199
- Language
- English
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