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Title: Direct observation of junction formation in polymer light-emitting electrochemical cells

Abstract

Electroabsorption (EA) measurements are used to determine the electric fields in polymer light-emitting electrochemical cells (LEC{close_quote}s). The EA signals are measured as a function of the dc bias and are found to increase abruptly above a threshold voltage. The EA measurements are compared with the capacitance-voltage and current-voltage characteristics. Calculations using a model based on electrochemical junction formation are in agreement with all of the experimental observations. These results show unambiguously that the picture of electrochemical junction formation in LEC{close_quote}s is correct. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
;  [1]; ;  [2]
  1. Institute for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106 (United States)
  2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
303879
Resource Type:
Journal Article
Journal Name:
Physical Review, B: Condensed Matter
Additional Journal Information:
Journal Volume: 59; Journal Issue: 4; Other Information: PBD: Jan 1999
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; ELECTROCHEMISTRY; POLYMERS; ELECTROCHEMICAL CELLS; LIGHT EMITTING DIODES; ELECTRIC FIELDS; THIN FILMS; ELECTRIC CONTACTS; JUNCTIONS

Citation Formats

Gao, J, Heeger, A J, Campbell, I H, and Smith, D L. Direct observation of junction formation in polymer light-emitting electrochemical cells. United States: N. p., 1999. Web. doi:10.1103/PhysRevB.59.R2482.
Gao, J, Heeger, A J, Campbell, I H, & Smith, D L. Direct observation of junction formation in polymer light-emitting electrochemical cells. United States. https://doi.org/10.1103/PhysRevB.59.R2482
Gao, J, Heeger, A J, Campbell, I H, and Smith, D L. Fri . "Direct observation of junction formation in polymer light-emitting electrochemical cells". United States. https://doi.org/10.1103/PhysRevB.59.R2482.
@article{osti_303879,
title = {Direct observation of junction formation in polymer light-emitting electrochemical cells},
author = {Gao, J and Heeger, A J and Campbell, I H and Smith, D L},
abstractNote = {Electroabsorption (EA) measurements are used to determine the electric fields in polymer light-emitting electrochemical cells (LEC{close_quote}s). The EA signals are measured as a function of the dc bias and are found to increase abruptly above a threshold voltage. The EA measurements are compared with the capacitance-voltage and current-voltage characteristics. Calculations using a model based on electrochemical junction formation are in agreement with all of the experimental observations. These results show unambiguously that the picture of electrochemical junction formation in LEC{close_quote}s is correct. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevB.59.R2482},
url = {https://www.osti.gov/biblio/303879}, journal = {Physical Review, B: Condensed Matter},
number = 4,
volume = 59,
place = {United States},
year = {1999},
month = {1}
}