1. Surface modification of graphene using HBC-6ImBr in solution-processed OLEDs.
- Author
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Cheng, Tsung-Chin, Ku, Ting-An, Huang, Kuo-You, Chou, Ang-Sheng, Chang, Po-Han, Chang, Chao-Chen, Yue, Cheng-Feng, Liu, Chia-Wei, Wang, Po-Han, Wong, Ken-Tsung, and Wu, Chih-I
- Subjects
ORGANIC light emitting diodes ,GRAPHENE ,ANODES ,OXIDE coating ,OZONE - Abstract
In this work, we report a simple method for solution-processed organic light emitting devices (OLEDs), where single-layer graphene acts as the anode and the hexa-peri-hexabenzocoronene exfoliating agent (HBC-6ImBr) provides surface modification. In SEM images, the PEDOT:PSS solution fully covered the graphene electrode after coating with HBC-6ImBr. The fabricated solution-processed OLEDs with a single-layer graphene anode showed outstanding brightness at 3182 cd/m² and current efficiency up to 6 cd/A which is comparable to that of indium tin oxide films, and the OLED device brightness performance increases six times compared to tri-layer graphene treated with UV-Ozone at the same driving voltage. This method can be used in a wide variety of solution-processed organic optoelectronics on surface-modified graphene anodes. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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