Electronic Resource
Woodbury, NY
:
American Institute of Physics (AIP)
Applied Physics Letters
72 (1998), S. 2217-2219
ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We describe efficient electroluminescence from a terbium complex, tris-(1-phenyl-3-methyl-4isobutyryl-5-pyrozolone)-bis(triphenyl phosphine oxide) terbium (PTT). The green-emitting material possesses much higher photoluminescence efficiency compared to the commonly used green light emitter, 8-hydroxyquinoline aluminum (ALQ). The rarely observed emission from the hole transport layer, N, N′-bis (3-methylphenyl)- N, N′-diphenyl-benzidine (TPD) of the device ITO/TPD/PTT/Al proves that PTT also is a good electron transporting material. The ITO/TPD/PTT/ALQ/Al device shows luminance up to 920 cd/m2 at a drive voltage of 18 V and a luminous efficiency of 0.51 lm/W at a current density of 0.70 mA/cm2, which are up to now the highest among devices using rare-earth complex materials as emitters. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.121327
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