A high-performance organic active matrix pixel was fabricated by using a metal oxide (V2O5) coupling layer that effectively integrates an organic light-emitting diode (OLED) on top of an organic field-effect transistor (OFET). The field-effect mobility of the OFET approached 0.5 cm2 V-1 s-1 and the ON/OFF current ratio was ≫103. The brightness of the OLED was on the order of 2000 cd/m2, with an efficiency above 3.3 cd/A. The present work describes in detail a methodology for sizing and stacking an OFET in bottom-emitting active matrix pixel circuits. The confinement of pixel dimension ensures the uniformity of light emission. The material for coupling layer can be tailored to achieve maximum device efficiency. A unique active matrix pixel circuit is proposed that renders both the OFET and OLED their individual performance after integration.
Published in:
Applied Physics Letters
(Volume:86
,
Issue:
25
)
Date of Publication:
Jun 2005
- Page(s):
-
253503
-
253503-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.1941461
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Jun 2005