Issue 4, 2021

Polymer light-emitting electrochemical cells with ultralow salt content: performance enhancement through synergetic chemical and electrochemical doping actions

Abstract

Polymer light-emitting electrochemical cells (PLECs) employing a silver trifluoromethanesulfonate (Ag triflate) salt are demonstrated. The red-emitting PLECs contained 0.2–1 wt% salt, but exhibited a peak luminance of 6000 cd m−2, with high efficiency and minimal efficiency roll-off. Notably, the Ag triflate cells activate more than 100 times faster than an optimized reference cell containing a potassium triflate salt. The high performance of the Ag triflate PLECs can be attributed to the partial chemical doping of the light-emitting polymer by the silver cations. The synergetic action of chemical and electrochemical doping provides a new avenue to design high-performance mixed conductor devices.

Graphical abstract: Polymer light-emitting electrochemical cells with ultralow salt content: performance enhancement through synergetic chemical and electrochemical doping actions

Supplementary files

Article information

Article type
Research Article
Submitted
12 nov 2020
Accepted
18 dec 2020
First published
21 dec 2020

Mater. Chem. Front., 2021,5, 1847-1852

Polymer light-emitting electrochemical cells with ultralow salt content: performance enhancement through synergetic chemical and electrochemical doping actions

S. Hu, H. Yeh and J. Gao, Mater. Chem. Front., 2021, 5, 1847 DOI: 10.1039/D0QM00937G

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