TY - JOUR
T1 - Highly improved electroluminescence from double-layer devices based on a carbazole-functionalized europium3+ complex
AU - Yin, Kun
AU - Xu, Hui
AU - Zhong, Gaoyu
AU - Ni, Gang
AU - Huang, Wei
PY - 2009/5
Y1 - 2009/5
N2 - A novel europium complex Eu(TTA)3(CPPO)2 (1) (TTA=thenoyltrifluoroacetone, CPPO=9-[4-(diphenyl-phosphinoyl)-phenyl]-9H- carbazole) based on the phosphine oxide ligand with bipolar structure was used to fabricate double-layer devices. The strong hole injection and transport ability of 1 was proved. The luminance of 414 cd∈m-2 was achieved with the device configuration ITO/Eu(TTA)3(CPPO) 2(40 nm)/BCP (30 nm)/Mg:Ag (BCP∈=∈2,∈9-dimethyl-4, ∈7-diphenyl-1,∈10-phenanthroline), which is favorable among double-layer organic light emitting devices based on small molecular Eu 3+ complexes. The maximum current efficiency of 2.44 cd∈A -1 and external quantum efficiency of 1.55% demonstrate the potential application of 1 as a promising candidate for high-efficiency, simple-structure and pure red-emitting devices.
AB - A novel europium complex Eu(TTA)3(CPPO)2 (1) (TTA=thenoyltrifluoroacetone, CPPO=9-[4-(diphenyl-phosphinoyl)-phenyl]-9H- carbazole) based on the phosphine oxide ligand with bipolar structure was used to fabricate double-layer devices. The strong hole injection and transport ability of 1 was proved. The luminance of 414 cd∈m-2 was achieved with the device configuration ITO/Eu(TTA)3(CPPO) 2(40 nm)/BCP (30 nm)/Mg:Ag (BCP∈=∈2,∈9-dimethyl-4, ∈7-diphenyl-1,∈10-phenanthroline), which is favorable among double-layer organic light emitting devices based on small molecular Eu 3+ complexes. The maximum current efficiency of 2.44 cd∈A -1 and external quantum efficiency of 1.55% demonstrate the potential application of 1 as a promising candidate for high-efficiency, simple-structure and pure red-emitting devices.
UR - http://www.scopus.com/inward/record.url?scp=62349124924&partnerID=8YFLogxK
U2 - 10.1007/s00339-008-4963-7
DO - 10.1007/s00339-008-4963-7
M3 - 文章
AN - SCOPUS:62349124924
SN - 0947-8396
VL - 95
SP - 595
EP - 600
JO - Applied Physics A: Materials Science and Processing
JF - Applied Physics A: Materials Science and Processing
IS - 2
ER -