Dependence of carrier recombination mechanism on the thickness of the emission layer in green phosphorescent organic light emitting devices

2011 ◽  
Vol 12 (4) ◽  
pp. 582-588 ◽  
Author(s):  
Dandan Song ◽  
Qi Wang ◽  
Suling Zhao ◽  
Hany Aziz
Keyword(s):  
Emission Layer ◽  
Recombination Mechanism ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Carrier Recombination ◽  
Organic Light ◽  
Organic Light Emitting Devices

A Novel Efficient Blue Organic Light Emitting Structure

2005 ◽  
Vol 475-479 ◽  
pp. 3677-3680 ◽  
Author(s):  
Wen Long Jiang ◽  
Yu Duan ◽  
Yi Zhao ◽  
Jingying Hou ◽  
Shi Yong Liu
Keyword(s):  
Light Emission ◽  
Copper Phthalocyanine ◽  
Luminous Efficiency ◽  
Blocking Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Carrier Recombination ◽  
Organic Light ◽  
Hole Blocking Layer ◽  
Organic Light Emitting Devices

In this paper, we describe the performance of an organic light emitting devices〔OLEDs〕 with ITO /4,4’,4“-tris{N,- （ 3-methylphenyl ） -N-phenylamino}triphenylamine (m-MTDATA) /N,N-diphenyl-N,N-bis1-naphthyl-1,1-biphenyl-4,4-diamine (NPB) /copper phthalocyanine (CuPc) / NPB / Bathocuproine(BCP) / tris-8-hydroxyquinoline Aluminum (Alq3) / LiF/ AL structure, the CuPc inserted between the two layers of NPB as a hole-consuming layer (HCL), and the BCP as a hole-blocking layer (HBL) . The EL spectrum peak is at 430 nm, indicating that the carrier recombination is confined in the NPB layer, in additional light emission originates from NPB. Compared with the luminous efficiency of the conventional diode without CuPc layer, that of the diode with HCL has been sharply increased up to 2.62 cd /A. It suggested that the CuPc and BCP exactly function as hole-consuming and hole-blocking layers, respectively, which enhance the efficiency of carrier，s recombination and confine the excitation in the EL layer.

White organic light-emitting devices with a solution-processed small molecular emission layer

Displays ◽  
2012 ◽  
Vol 33 (3) ◽  
pp. 129-132 ◽  
Author(s):  
Xinwen Zhang ◽  
Zhaoxin Wu ◽  
Bo Jiao ◽  
Dongdong Wang ◽  
Dawei Wang ◽  
...  
Keyword(s):  
Emission Layer ◽  
Solution Processed ◽  
Light Emitting ◽  
Molecular Emission ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices
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