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Effect of a multiple quantum well structure as an emissive layer based on blue phosphorescent organic light-emitting diodes

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Abstract

We demonstrate a multiple quantum well (MQW) structure with charge control layers (CCLs) to produce highly efficient blue phosphorescent organic light-emitting diodes (OLEDs). Three types of devices (A, B, and C) were fabricated with the following emitting layer structures while maintaining the thickness of the EMLs: host-emitter doping layers, nondoping layers, and CCLs. Triplet energies in such MQW devices were confined at the EMLs. The properties of a device with an MQW demonstrated a maximum luminous efficiency and external quantum efficiency of 18.33 cd/A and 9.47%, respectively. The device also showed a reduction in the turn-on voltage from 3.5 V to 2.5 V and an enhancement of the power efficiency. The described MQW device concept is considered to be useful for future OLED displays and light applications.

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Authors and Affiliations

  1. Department of Information Display, Hongik University, Seoul, 121-791, Korea

    Seok Jae Lee, Ja Ryong Koo, Ho Won Lee, Dong Hyung Lee & Young Kwan Kim

  2. Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea

    Kum Hee Lee & Seung Soo Yoon

  3. Department of Electronic Engineering, Hallym University, Chuncheon, 200-702, Korea

    Jaehoon Park

Authors
  1. Seok Jae Lee
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  2. Ja Ryong Koo
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  3. Ho Won Lee
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  4. Dong Hyung Lee
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  5. Kum Hee Lee
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  6. Seung Soo Yoon
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  7. Jaehoon Park
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  8. Young Kwan Kim
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Corresponding authors

Correspondence to Seung Soo Yoon, Jaehoon Park or Young Kwan Kim.

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Lee, S.J., Koo, J.R., Lee, H.W. et al. Effect of a multiple quantum well structure as an emissive layer based on blue phosphorescent organic light-emitting diodes. Electron. Mater. Lett. 9, 821–824 (2013). https://doi.org/10.1007/s13391-013-6024-4

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  • DOI: https://doi.org/10.1007/s13391-013-6024-4

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