Inverted ternary OPD based on PEIE

摘要

Abstract In today’s rapid development of multiphase organic photodetectors(OPDs), research on inverted ternary OPDs is very necessary. Therefore, this paper innovatively proposes an inverted ternary organic photodetector(OPD) with a structure of ITO/PEIE/PC61documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$_{61}$$end{document}BM/P3HT: PCPDTBT/MoO3documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$_{3}$$end{document}/Al. And the PEIE electron transport layer(ETL), which is essential for the inverted structure, is used to study the effects of different thicknesses. Different thicknesses of PEIE have different effects on the photoelectric characteristics of the device. For the photodetector spin-coated with 0.15wt% PEIE solution, the photodetector shows resistance characteristics. For the photodetector spin-coated with 0.40wt% PEIE solution, the photodetector shows the characteristics of the photodiode. For the photodetector spin-coated with 0.45wt% PEIE solution, the photodetector shows the characteristics of a photomultiplier diode. The underlying mechanism is that different thicknesses of PEIE have different energy levels for ITO, and different cathode energy levels have huge differences in the working mechanism of the device.