The enhanced performance of organic light-emitting diodes by using PCBM as the anode modification layer |
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| Authors: | Guang Yan Suling Zhao Zheng Xu Fujun Zhang Chao Kong Liyan Gao Xurong Xu |
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| Affiliation: | a Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, No. 3 Shang Yuan Cun, Hai Dian District, Beijing 100044, China
b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | [6,6]-Phenyl C61 butyric acid methyl ester (PCBM) is used to modify an indium tin oxide (ITO)-coated substrate. Organic light-emitting diodes (OLEDs) using PCBM as the anode modification layer are fabricated. The dependence of performance on different PCBM thicknesses is also investigated. When the thickness of the PCBM film is appropriate, the brightness and efficiency of OLEDs are enhanced, which is attributed to an enhanced hole injection and an improved carrier balance. The enhancement of hole injection was ascribed to the formation of a dipole layer at the anode/organic interface. |
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| Keywords: | Organic light-emitting diode Electroluminescence Anode modification PCBM |
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