Nanoparticle-induced negative differential resistance and memory effect in polymer bistable light-emitting device

Authors

Ricky J. Tseng, University of California, Los Angeles
Jianyong Ouyang, University of California-Los Angeles
Chih-Wei Chu, University of California-Los Angeles
Jinsong Huang, University of Nebraska-LincolnFollow
Yang Yang, University of California-Los Angeles

Date of this Version

2006

Citation

APPLIED PHYSICS LETTERS 88, 123506 (2006)

Comments

© 2006 American Institute of Physics.

Abstract

Recently, electrical bistability was demonstrated in polymer thin films incorporated with metal nanoparticles [J. Ouyang, C. W. Chu, C. R. Szmanda, L. P. Ma, and Y. Yang, Nat. Mater. 3, 918 (2004)]. In this letter, we show the evidence that electrons are the dominant charge carriers in these bistable devices. Direct integration of bistable polymer layer with a light-emitting polymer layer shows a unique light-emitting property modulated by the electrical bistability. A unique negative differential resistance induced by the charged gold nanoparticles is observed due to the charge trapping effect from the nanoparticles when interfaced with the light-emitting layer.