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Journal of Display Technology

Journal of Display Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 9, Iss. 12 — Dec. 1, 2013
  • pp: 942–946

Improving the Performance of a Hybrid Inorganic–Organic Light-Emitting Diode Through Structure Optimization

R. Acharya and X. A. Cao

Journal of Display Technology, Vol. 9, Issue 12, pp. 942-946 (2013)


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Abstract

Significant performance enhancement of a green hybrid inorganic-organic light-emitting diode (HyLED) based on a simplified ${{WO}}_{3}$ /organic layer structure has been achieved through structure optimization. A 20–50 nm as-deposited ${{WO}}_{3}$ layer allowed for facile hole injection and transport. In the meantime, it had high transparency and good robustness required for efficient and reliable operation of the HyLED. Inserting a 30 nm undoped 4,4 $^{\prime}$ -N,N $^{\prime}$ -dicarbazolebiphenyl (CBP) layer between the ${{WO}}_{3}$ and emitting layer resulted in a broadened exciton generation zone and improved the brightness by 87.4% at 20 ${{mA/cm}}^{2}$ . At this injection level, the optimized HyLED reached a luminance of 11642 ${{cd/m}}^{2}$ and a current efficiency of 58.2 cd/A, and exhibited good reliability under constant-current stressing.

© 2013 IEEE

Citation
R. Acharya and X. A. Cao, "Improving the Performance of a Hybrid Inorganic–Organic Light-Emitting Diode Through Structure Optimization," J. Display Technol. 9, 942-946 (2013)
http://www.opticsinfobase.org/jdt/abstract.cfm?URI=jdt-9-12-942


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