Processes for high efficiency of blue organic light-emitting diodes with dopants

Ching-Wu Wang; Guan-Ting Chen; Wen-Fa Kuo

doi:10.1117/12.483067

17 September 2002 Processes for high efficiency of blue organic light-emitting diodes with dopants

Ching-Wu Wang, Guan-Ting Chen, Wen-Fa Kuo

Proceedings Volume 4918, Materials, Devices, and Systems for Display and Lighting; (2002) https://doi.org/10.1117/12.483067
Event: Photonics Asia, 2002, Shanghai, China

Abstract

A blue organic light-emitting diode has been made by anthracene derivative. The structure of the blue device is ITO/m-MTDATA/NPB/doped anthracene/Alq₃/Mg:Aag, where m-MTDATA, NPB and undoped Alq₃ were used for hole injection layer, hole transporting layer, and electron transporting layer, and electron tranporting layer, respectively. Three different of blue fluorescent dyes, inclduign BCzVBi, perylene, and TBPe, were introduced into anthracene as dopants for obtaining a highly luminescent blue emission. Evidence shows that the BCzVBi-doped device behaves the superior L-J and J-V characteristics due to the higher fluorescence and the formation of conducting path for carrrier transport. The emission mechanism was strongly suggestd to be due to energy transfer process from anthracene host to BCzVBi dopant and achieving a highly luminescent blue-light.

Citation Download Citation

Ching-Wu Wang, Guan-Ting Chen, and Wen-Fa Kuo "Processes for high efficiency of blue organic light-emitting diodes with dopants", Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); https://doi.org/10.1117/12.483067

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KEYWORDS

Organic light emitting diodes

Electroluminescence

Luminescence

Doping

Electron transport

Energy transfer

Absorption

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