STUDY ON BENZOTHIAZOLATE DERIVATIVE AS NOVEL EMITTING MATERIALS IN BLUE ORGANIC ELECTROLUMINESCENT DEVICES

doi:10.7517/j.issn.1674-0475.1999.03.199

Imaging Science and Photochemistry ›› 1999, Vol. 17 ›› Issue (3): 199-202.DOI: 10.7517/j.issn.1674-0475.1999.03.199

STUDY ON BENZOTHIAZOLATE DERIVATIVE AS NOVEL EMITTING MATERIALS IN BLUE ORGANIC ELECTROLUMINESCENT DEVICES

ZHANG Xiaohong¹, WU Shikang¹, GAO Zhiqiang², LAI W Y², LI Zhensheng(LEE C S)², KUANG Hailun(KWONG Hoilun)², LI Shutang(LEE Shuittong)²

1. Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P.R. China;
2. Centre of Super-Diamond and Advanced Films(COS DAF), Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong

Received:1999-04-20 Revised:1999-05-12 Online:1999-08-20 Published:1999-08-20

Abstract

Abstract: Benzothiazolate derivative (BT) with high fluorescence quantum yield was synthesized and firstly used as dopant in blue organic electroluminescent devices. The devices structure ITO/TPD/DPBI:2% BT/DPBI/Mg:Ag was employed, in which TPD is N,N’-bis(3methylphenyl)N,N’-diphenyl1, 1’-biphenyl-4, 4’-diamine and used as a hole transport layer (HTL);DPBI is a dimer of Narylbenzimidazoles and functioned as host and electron transporter. In the device with BT as dopant, blue emission peak around 475 nm and a luminance of 1260 cd/m² was achieved at a current density of about 400 mA/cm². The current efficiency of this device is about 0.50 cd/A at 5 V.

Key words: benzothiazolate derivative, electroluminescent, photoluminescent

ZHANG Xiaohong, WU Shikang, GAO Zhiqiang, LAI W Y, LI Zhensheng(LEE C S), KUANG Hailun(KWONG Hoilun), LI Shutang(LEE Shuittong). STUDY ON BENZOTHIAZOLATE DERIVATIVE AS NOVEL EMITTING MATERIALS IN BLUE ORGANIC ELECTROLUMINESCENT DEVICES[J]. Imaging Science and Photochemistry, 1999, 17(3): 199-202.

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STUDY ON BENZOTHIAZOLATE DERIVATIVE AS NOVEL EMITTING MATERIALS IN BLUE ORGANIC ELECTROLUMINESCENT DEVICES

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