TY - JOUR
T1 - Electrical characterization of organic light-emitting diodes using dipotassium phthalate as n -type dopant
AU - Ho, Meng Huan
AU - Hsieh, Ming Ta
AU - Chen, Teng-Ming
AU - Chen, Jenn-Fang
AU - Hwang, Shiao Wen
AU - Chen, Chin H.
PY - 2008
Y1 - 2008
N2 - An efficient n -doped electron transport layer composed of 4,7-diphenyl-1,10-phenanthroline (BPhen) and dipotassium phthalate (PAK2) has been developed. By temperature-dependent admittance spectroscopy, the incorporation of PAK2 into BPhen is found to raise the Fermi level from 1.7 eV to only around 0.5 eV below BPhen's lowest unoccupied molecular orbital, which further enhances the efficiency of electron injection from an Al cathode. When this n -doped layer is adopted in an organic light-emitting diode device, the green fluorescent 10-(2-benzothiazolyl)-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro- 1H,5H,11H-benzo [l] -pyrano[6,7,8- ij] quinolizin-11-one do-ped device can achieve a current efficiency of 16 cdA and a power efficiency of 10.9 lmW at 1000 cd m2.
AB - An efficient n -doped electron transport layer composed of 4,7-diphenyl-1,10-phenanthroline (BPhen) and dipotassium phthalate (PAK2) has been developed. By temperature-dependent admittance spectroscopy, the incorporation of PAK2 into BPhen is found to raise the Fermi level from 1.7 eV to only around 0.5 eV below BPhen's lowest unoccupied molecular orbital, which further enhances the efficiency of electron injection from an Al cathode. When this n -doped layer is adopted in an organic light-emitting diode device, the green fluorescent 10-(2-benzothiazolyl)-1,1,7,7-tetramethyl-2,3,6,7-tetrahydro- 1H,5H,11H-benzo [l] -pyrano[6,7,8- ij] quinolizin-11-one do-ped device can achieve a current efficiency of 16 cdA and a power efficiency of 10.9 lmW at 1000 cd m2.
UR - http://www.scopus.com/inward/record.url?scp=51349089967&partnerID=8YFLogxK
U2 - 10.1063/1.2976139
DO - 10.1063/1.2976139
M3 - Article
AN - SCOPUS:51349089967
SN - 0003-6951
VL - 93
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 8
M1 - 083505
ER -