Organic light-emitting diodes based on layered films of thiophene/phenylene co-oligomers
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- 作者：Tomoaki Sengoku ; Takeshi Yamao ; Shu Hotta
- 关键词：Thiophene/phenylene co-oligomer ; p&ndash ; n Junction ; Organic light-emitting diode ; Rectification ratio ; External quantum efficiency
- 刊名：Journal of Non-Crystalline Solids
- 出版年：2012
- 出版时间：1 September, 2012
- 年：2012
- 卷：358
- 期：17
- 页码：2525-2529
- 全文大小：815 K
文摘
We have fabricated p-n junctions using a combination of p- and n-type thiophene/phenylene co-oligomer (TPCO) thin films and applied them to organic light-emitting diodes (OLEDs). We made two types of devices using the different p-type TPCOs. Both the devices showed current-injected light emissions and high rectification ratios (~ 102-104). The one type of the devices produced brighter surface emissions and higher external quantum efficiencies (0.17 % ) than the other. The results indicated that the p-n junction comprising layered TPCOs showed good functionality.