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

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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 3 nm was
observed to produce a current efficiency of 3.25 cd/A, which corresponds to a 30% improvement
compared to that of the standard device without BCP (2.5 cd/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/14475

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