Electroluminescence Characteristics of a New Green-Emitting Phenylphenothiazine Derivative with Phenylbenzimidazole Substituent 


Vol. 34,  No. 1, pp. 107-111, Jan.  2013
10.5012/bkcs.2013.34.1.107


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  Abstract

A new green-emitting material with donor-acceptor architecture, 3,7-bis(1'-phenylbenzimidazole-2'-yl)-10- phenylphenothiazine (BBPP) was synthesized and its thermal, optical, and electroluminescent characteristics were investigated. Organic light-emitting diodes (OLEDs) with four different multilayer structures were prepared using BBPP as an emitting layer. The optimized device with the structure of [ITO/2-TNATA (40 nm)/ BBPP (30 nm)/TPBi (30 nm)/Alq3 (10 nm)/LiF (1 nm)/Al (100 nm)] exhibited efficient green emission. Enhanced charge carrier balance and electron mobility in the organic layers enabled the device to demonstrate a maximum luminance of 31,300 cd/m2, a luminous efficiency of 6.83 cd/A, and an external quantum efficiency of 1.62% with the CIE 1931 chromaticity coordinates of (0.21, 0.53) at a current density of 100 mA/ cm2.

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  Cite this article

[IEEE Style]

Y. Ahn, D. E. Jang, Y. Cha, M. Kim, K. Ahn, Y. C. Kim, "Electroluminescence Characteristics of a New Green-Emitting Phenylphenothiazine Derivative with Phenylbenzimidazole Substituent," Bulletin of the Korean Chemical Society, vol. 34, no. 1, pp. 107-111, 2013. DOI: 10.5012/bkcs.2013.34.1.107.

[ACM Style]

Yeonseon Ahn, Da Eun Jang, Yong-Bum Cha, Mansu Kim, Kwang-Hyun Ahn, and Young Chul Kim. 2013. Electroluminescence Characteristics of a New Green-Emitting Phenylphenothiazine Derivative with Phenylbenzimidazole Substituent. Bulletin of the Korean Chemical Society, 34, 1, (2013), 107-111. DOI: 10.5012/bkcs.2013.34.1.107.

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ISSN(Print) 0253-2964
ISSN(Online) 1229-5949