High photo-response organic ultraviolet photodectectors based on phosphorescent materials

Xiao Wang; Jungsheng Yu; Jiang Huang

doi:10.1117/12.2068985

2 September 2014 High photo-response organic ultraviolet photodectectors based on phosphorescent materials

Xiao Wang, Jungsheng Yu, Jiang Huang

Proceedings Volume 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging; 928405 (2014) https://doi.org/10.1117/12.2068985
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

Abstract

We demonstrated ultraviolet organic photodetectors based on poly(N-vinylcarbazole) polymeric matrix (PVK) and phosphorescent material of bis[2-(4-tertbutylphenyl)benzothiazolato-N,C2'] iridium(acetylacetonate) [(t-bt)₂Ir(acac)] blend film. The structures are the indium-tin oxide (ITO)/PEDOT : PSS/PVK/Bphen/Ag and ITO/PEDOT : PSS/PVK : (t-bt)₂Ir(acac) (1 : 10 %wt)/Bphen/Ag. Under UV light illumination, a high photocurrent density of 3.44 mA/cm² at -4 V was obtained, which is 6.6 times higher than that of without (t-bt)₂Ir(acac) material. The superior performances of the device doped with (t-bt)₂Ir(acac) material resulted from the UV light absorption efficiency and triplet nature of the phosphorescent complex.

Citation Download Citation

Xiao Wang, Jungsheng Yu, and Jiang Huang "High photo-response organic ultraviolet photodectectors based on phosphorescent materials", Proc. SPIE 9284, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronics Materials and Devices for Sensing and Imaging, 928405 (2 September 2014); https://doi.org/10.1117/12.2068985

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