Blue electroluminescence from 1,3-diphenyl-5-(2-pyrenyl)-2-pyrazoline

Authors
Gao, XC Cao, H Zhang, LQ Zhang, BW Huang, CH
Citation
Xc. Gao et al., Blue electroluminescence from 1,3-diphenyl-5-(2-pyrenyl)-2-pyrazoline, MOL CRYST A, 337, 1999, pp. 333-336
Citations number
4
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
337
Year of publication
1999
Pages
333 - 336
Database
ISI
SICI code
1058-725X(1999)337:<333:BEF1>2.0.ZU;2-1
Abstract
1,3-diphenyl-5-(2-pyrenyl)-2-pyrazoline (DPP) has been synthesized and used as the emitter material in the electroluminescence (EL) devices. The blue emission from DPP in the indium-tin-oxide (ITO)/diamine/DPP/8-hydroxyquinol ine aluminum (ALQ)/Al device is electric strength dependent and is explaine d by the electron tunneling injection model. The energy levels used in this model were determined by thin film electrochemistry. The device shows blue electroluminescence with luminance 2400 cd/m(2) at 18 V and efficiency 0.2 3 lm/W at 1.27 mA/cm(2).