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Effect of electron injection and transport materials on efficiency of deep-blue phosphorescent organic light-emitting devices
- Source :
-
Organic Electronics . Jul2009, Vol. 10 Issue 4, p686-691. 6p. - Publication Year :
- 2009
-
Abstract
- Abstract: We investigate the performance of FIr6-based deep-blue phosphorescent organic light-emitting devices (PHOLEDs) with three different electron transport materials, bathocuproine (BCP), 4,7-diphenyl-1,10-phenanthroline (BPhen), and tris[3-(3-pyridyl)mesityl]borane (3TPYMB), and study the effect of doping alkaline metals (Li and Cs) into these charge transport materials. External quantum efficiency (ηEQE ) of (20±1)% and peak power efficiency (ηP ) of (36±2) lm/W were achieved maintaining Commission Internationale de L’Eclairage (CIE) coordinates of (x =0.16, y =0.28) in p-i-n dual-emissive-layer (D-EML) deep-blue PHOLEDs with 3TPYMB as the electron transport material and 3TPYMB:Cs as the electron injection layer. The high efficiencies are attributed to the high triplet energy of 3TPYMB as well as the increased conductivity of 3TPYMB:Cs. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 15661199
- Volume :
- 10
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Organic Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 39782909
- Full Text :
- https://doi.org/10.1016/j.orgel.2009.03.002