Blue and green light-emitting electrochemical cells with microsecond response times

Authors
Tasch, S Gao, J Wenzl, FP Holzer, L Leising, G Heeger, AJ Scherf, U Mullen, K
Citation
S. Tasch et al., Blue and green light-emitting electrochemical cells with microsecond response times, EL SOLID ST, 2(6), 1999, pp. 303-305
Citations number
24
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ELECTROCHEMICAL AND SOLID STATE LETTERS
ISSN journal
10990062 → ACNP
Volume
2
Issue
6
Year of publication
1999
Pages
303 - 305
Database
ISI
SICI code
1099-0062(199906)2:6<303:BAGLEC>2.0.ZU;2-0
Abstract
Blue and green light-emitting electrochemical cells (LECs) based on a ladde r-type poly( paraphenylene) (m-LPPP) are described. These LECs are characte rized by an extremely low onset for light emission (between 2.2 and 2.7 V i n reverse direction for blue emission) yielding an external quantum efficie ncy of approximately 0.3% and a brightness of about 250 cd/m(2) at 10 V. Th e LECs based on m-LPPP show a fast pulse response below 30 mu s, which is a scribed to restricted motion of the ions in the LEC under pulse operation. (C) 1999 The Electrochemical Society. S1099-0062(98)09-017-8. All rights re served.