Organic light-emitting devices with a hole-blocking layer inserted between the hole-injection layer and hole-transporting layer

Yoga Divayana, Ph.D, Yoga Divayana (2006) Organic light-emitting devices with a hole-blocking layer inserted between the hole-injection layer and hole-transporting layer. Applied Physics Letters, 88 (8). ISSN 0003-6951

[img] Archive
4539dc58bc15eb1690054e7fe784727c.pdf - Published Version
Download (298kB)

Abstract

A hole-blocking layer (HBL), 2,9-dimethyl-4, 7-diphenylphenanthroline (BCP), was incorporated between the hole-transporting layer (HTL) and hole-injection layer for a tris-(8-hydroxyqunoline) aluminum-based organic light-emitting device. Such a structure helps to reduce the hole-leakage to the cathode resulting in improved current efficiency. Optimum BCP thickness of around 3nm3nm was observed to produce a current efficiency of 3.25cd?A3.25cd?A, which corresponds to a 30% improvement compared to that of the standard device without BCP (2.5cd?A)(2.5cd?A). Low operating voltage was also achieved by minimizing the thickness of the HTL. Both operating voltage and efficiency can be tuned by varying the thickness of HTL and HBL, respectively.

Item Type: Article
Subjects: L Education > L Education (General)
Divisions: Faculty of Law, Arts and Social Sciences > School of Education
Depositing User: USDI USDI Universitas Udayana
Date Deposited: 20 Jul 2020 12:24
Last Modified: 20 Jul 2020 12:24
URI: https://erepo.unud.ac.id/id/eprint/10382

Actions (login required)

View Item View Item
Unud Repository is powered by EPrints 3.4 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.