White Light from a Single-Emitter Light-Emitting Electrochemical Cell

We report a novel and generic approach for attaining white light from a single-emitter light-emitting electrochemical cell (LEC). With an active-layer comprising a multifluorophoric conjugated copolymer (MCP) and an electrolyte designed to inhibit MCP energy-transfer interactions during LEC operatio...

Full description

Saved in:
Bibliographic Details
Published inJournal of the American Chemical Society Vol. 135; no. 9; pp. 3647 - 3652
Main Authors Tang, Shi, Pan, Junyou, Buchholz, Herwig A, Edman, Ludvig
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 06.03.2013
Subjects
Electrochemical Techniques - instrumentation
Electrolytes - chemistry
Light
Molecular Structure
Polymers - chemistry
Spectrometry, Fluorescence
Temperature
Online AccessGet full text

Cover

More Information
Summary:We report a novel and generic approach for attaining white light from a single-emitter light-emitting electrochemical cell (LEC). With an active-layer comprising a multifluorophoric conjugated copolymer (MCP) and an electrolyte designed to inhibit MCP energy-transfer interactions during LEC operation, we are able to demonstrate LECs that emit broad-band white light with a color rendering index of 82, a correlated-color temperature of 4000 K, and a current conversion efficacy of 3.8 cd/A. It is notable that this single-emitter LEC configuration eliminates color-drift problems stemming from phase separation, which are commonly observed in conventional blended multiemitter devices. Moreover, the key role of the electrolyte in limiting undesired energy-transfer reactions is highlighted by the observation that an electrolyte-free organic light-emitting diode comprising the same MCP emits red light.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/ja312548b