Journal of Photopolymer Science and Technology
Online ISSN : 1349-6336
Print ISSN : 0914-9244
ISSN-L : 0914-9244
Small Molecule-based Organic Electrophosphorescent Devices fabricated by Spin Coating
Kenichiro WatanabeDaisuke KanaiToshimitsu TsuzukiEiji TakanagaShizuo Tokito
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2007 Volume 20 Issue 1 Pages 39-42


Organic electrophosphorescent devices using several small molecules as a host and Ir(ppy)3 as a green emitting guest have been fabricated by spin coating. We used new host materials in which a cyclohexanyl or adamatyl group was inserted between two phenyl rings of CBP (named Cy-Cz, Ad-cz). The device with Cy-Cz host material and a guest concentration of 24wt% showed an external quantum efficiency of 11% and a power efficiency of 27lm/W at 100cd/m2. These results suggest that small molecule-based organic electrophosphorescent devices fabricated by spin coating can be highly efficient.

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© 2007 The Society of Photopolymer Science and Technology (SPST)
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