Electrical and optical properties of N, N`-bis (Inaphthyl)-N,N`-diphenyl-1,1`-biphenyl-4,4`-diamine as hole transport layer in organic light emitting devices

Citation

Lim, Mei Yee and Mat Yunus, Wan Mahmood and Talib, Zainal Abidin and Kassim, Anuar and Dee, Chang Fu and Ismail, A. (2010) Electrical and optical properties of N, N`-bis (Inaphthyl)-N,N`-diphenyl-1,1`-biphenyl-4,4`-diamine as hole transport layer in organic light emitting devices. American Journal of Engineering and Applied Sciences, 3 (1). pp. 64-67. ISSN 1941-7020; ESSN: 1941-7039

Abstract

Problem statement: The aim of this research was to study the electrical and optical properties of N, N`-bis(Inaphthyl)-N,N`-diphenyl-1,1`-biphenyl-4,4`-diamine (NPB) organic materials often used as hole transport layer in Organic Light-Emitting Devices (OLED). Approach: The NPB layer was prepared using the thermal evaporation method. From photoluminescence spectra, two peaks at 630 and 480 nm were observed with 55 nm NPB. The electrical conductivity was strongly influenced by the layer thickness. Results: The energy band gap of each NPB layer was successfully presented in the range of 2.4-2.9 eV. Conclusion: This study successfully showed the effect of different thickness of NPB in OLED.

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Additional Metadata

Item Type:	Article
Divisions:	Faculty of Science
DOI Number:	https://doi.org/10.3844/ajeassp.2010.64.67
Publisher:	Science Publications
Keywords:	Thermal evaporation; Photoluminescence; Energy band gap; Electrical conductivity
Depositing User:	Najwani Amir Sariffudin
Date Deposited:	14 May 2014 00:49
Last Modified:	04 Dec 2017 09:08
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3844/ajeassp.2010.64.67
URI:	http://psasir.upm.edu.my/id/eprint/14449
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