Study of different electron transporting layer on electroluminescent properties of perovskite light emitting diodes

Zijun Wang; Zongkang Li; Genjie Yang; Junsheng Yu

doi:10.1117/12.2506389

8 February 2019 Study of different electron transporting layer on electroluminescent properties of perovskite light emitting diodes

Zijun Wang, Zongkang Li, Genjie Yang, Junsheng Yu

Author Affiliations +

Proceedings Volume 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging; 1084312 (2019) https://doi.org/10.1117/12.2506389
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China

Abstract

Organic-inorganic hybrid perovskites have been emerging as promising emitting materials for light-emitting diodes due to their miraculous optoelectronic properties. Conventional electron transporting materials used in organic light emitting diodes (OLEDs) such as 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene (TPBi), 4,7-diphenyl-1,10-phenanthroline (Bphen), 1,3,5-tri(m-pyrid-3-yl-phenyl) benzene (TmPyPB), and 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) have been used as electron transporting layer (ETL) in the perovskite light emitting diodes (PeLEDs). However, there exit few systematic analysis about different ETL materials on the performance of PeLED. In this work, we employ TPBi, BPhen, TmPyPB, and BCP as ETL material of PeLED, respectively. Owing to the high electron mobility and suitable energy level, BPhen PeLED express the best performance at the same thickness with a maximum luminance of 812 cd m² and current efficiency (CE) of 0.1 cd A^-1. Hence, this work provides a useful method on device architecture construction for the realization of high performance PeLEDs.

Citation Download Citation

Zijun Wang, Zongkang Li, Genjie Yang, and Junsheng Yu "Study of different electron transporting layer on electroluminescent properties of perovskite light emitting diodes", Proc. SPIE 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging, 1084312 (8 February 2019); https://doi.org/10.1117/12.2506389

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KEYWORDS

Perovskite

Electron transport

Light emitting diodes

External quantum efficiency

Organic light emitting diodes

Scanning electron microscopy

Silver

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