کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1264523 | 972149 | 2013 | 6 صفحه PDF | دانلود رایگان |

• Carbazole modified terphenyl based high triplet energy host material.
• High quantum efficiency in blue phosphorescent organic light-emitting diodes.
• Ortho linked terphenyl core structure for host material.
A high triplet energy material derived from carbazole and ortho terphenyl, 3,3′′-di(9H-carbazole-9-yl)-1,1′:2′,1′′-terphenyl (33DCTP), was synthesized as the host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). The 33DCTP host showed high glass transition temperature of 110 °C, high triplet energy of 2.77 eV, the highest occupied molecular orbital of −6.12 eV and the lowest unoccupied molecular orbital of −2.52 eV. High efficiency blue PHOLEDs were developed using the 33DCTP host and bis((3,5-difluorophenyl)pyridine) iridium picolinate dopant material, and high quantum efficiency of 23.7% was achieved with a color coordinate of (0.14, 0.28).
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Journal: Organic Electronics - Volume 14, Issue 6, June 2013, Pages 1602–1607