The Performance of OLEDs Improved by Co-doping PEDOT: PSS Films

SU Bin; QI Wang; ZHOU Yumeng; ZHANG Lu; WANG Yifan; ZHU Enwei; LIU Chunbo; CHE Guangbo

doi:10.6054/j.jscnun.2023033

Journal of South China Normal University (Natural Science Edition) > 2023 > 55(3): 32-38. > DOI: 10.6054/j.jscnun.2023033

SU Bin, QI Wang, ZHOU Yumeng, ZHANG Lu, WANG Yifan, ZHU Enwei, LIU Chunbo, CHE Guangbo. The Performance of OLEDs Improved by Co-doping PEDOT: PSS Films[J]. Journal of South China Normal University (Natural Science Edition), 2023, 55(3): 32-38. DOI: 10.6054/j.jscnun.2023033

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The Performance of OLEDs Improved by Co-doping PEDOT: PSS Films

1.
Jilin Normal University/Key Laboratory of Preparation and Application of Environmental Friendly Materials, Chinese Ministry of Education, Changchun 130103, China
2.
Baicheng Normal University, College of Chemistry, Baicheng 137000, China

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Received Date: February 22, 2022
Available Online: August 25, 2023

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Abstract

Abstract

In order to overcome the problems of strong acidity, low conductivity of PEDOT: PSS which as hole injection layer in OLEDs, an appropriate amount of imidazole and cesium iodide was co-doping into PEDOT: PSS to prepare efficient OLEDs. The results show that co-doping can effectively adjust the acidity and alkalinity of PEDOT: PSS, improve the hole injection capacity of PEDOT: PSS, so that the carrier transport is more balanced. Compared with OLEDs with pure PEDOT: PSS as hole injection layer, the maximum luminance and current efficiency of the optimized device are increased by 30% and 31%, respectively. This study provides theoretical and experimental reference for the research of doping PEDOT: PSS as hole injection layer in the field of OLEDs.
- organic light-emitting devices,
- hole injection layer,
- co-doping,
- current efficiency,
- luminance

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References

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