Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Study of ethanolamine surface treatment on the metal-oxide electron transport layer in inverted InP quantum dot light-emitting diodes

 
: Jang, I.; Kim, J.; Park, C.; Ippen, C.; Greco, T.; Oh, M.; Lee, J.; Kim, W.; Wedel, A.; Han, C.; Park, S.

:

Electronic materials letters 11 (2015), Nr.6, S.1066-1071
ISSN: 1738-8090 (Print)
ISSN: 2093-6788 (Online)
Englisch
Zeitschriftenaufsatz
Fraunhofer IAP ()

Abstract
The present work shows the effect of ethanolamine surface treatment on inverted InP quantum dot light-emitting diodes (QD-LEDs) with inorganic metal oxide layers. In the inverted structure of ITO/ZnO/InP QDs/CBP/MoO3/Al, a sol-gel derived ZnO film was used as an electron transport layer (ETL) and MoO3 was used as a hole injection layer (HIL). First, ethanolamine was treated as a surface modifier on top of the ZnO electron transport layer. The optical performance of the QD-LED device was improved by the ethanolamine surface treatment. Second, low temperature annealing (<200°C) was performed on the ZnO sol-gel electron transport layer, followed by an investigation of the effect of the ZnO annealing temperature. The efficiency of the inverted QD-LEDs was significantly enhanced (more than 3-fold) by optimization of the ZnO annealing temperature.

: http://publica.fraunhofer.de/dokumente/N-417628.html