Flexible Multifunctional Aromatic Polyimide Film: Highly Efficient Photoluminescence, Resistive Switching Characteristic, and Electroluminescence

Lunjun Qu; Lishuang Tang; Runxin Bei; Juan Zhao; Zhenguo Chi; Siwei Liu; Xudong Chen; Matthew P Aldred; Yi Zhang; Jiarui Xu

doi:10.1021/acsami.8b02712

Flexible Multifunctional Aromatic Polyimide Film: Highly Efficient Photoluminescence, Resistive Switching Characteristic, and Electroluminescence

ACS Appl Mater Interfaces. 2018 Apr 11;10(14):11430-11435. doi: 10.1021/acsami.8b02712. Epub 2018 Apr 2.

Authors

Affiliation

¹ PCFM Lab, GD HPPC Lab, Guangdong Engineering Technology Research Centre for High-Performance Organic and Polymer Photoelectric Functional Films, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry , Sun Yat-sen University , Guangzhou 510275 , China.

PMID: 29600701
DOI: 10.1021/acsami.8b02712

Abstract

We report a flexible multifunctional aromatic polyimide (BTDBPI) that shows yellow-green fluorescence with high photoluminescence quantum yield (PLQY) of 30% in the film state. The nonvolatile "write once-read many" (WORM) characteristic in a memory device with the configuration of ITO/BTDBPI/Au indicates that BTDBPI possesses organic semiconductor behavior. Moreover, polymer light-emitting diodes (PLEDs) with the structure of ITO/PEDOT:PSS/BTDBPI/TPBI/Mg-Ag exhibits an interesting dual-emission phenomenon that originates from the electroluminescence (EL) of the BTDBPI nanometer film (yellow-green, 525 nm) and TPBI (deep blue, 380 nm), demonstrating that BTDBPI shows both the charge-transporting and EL properties.

Keywords: PLED; aromatic polyimide; memory device; photoluminescence; resistive switching behavior.