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Design of Distributed Bragg Reflectors for Green Light-Emitting Devices Based on Quantum Dots as Emission Layer

Author

Listed:
  • Iman E. Shaaban

    (Electronics and Communications Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt)

  • Ahmed S. Samra

    (Electronics and Communications Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt)

  • Shabbir Muhammad

    (Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
    Department of Chemistry, College of Science, King Khalid University, P.O. Box 9004, Abha 61441, Saudi Arabia)

  • Swelm Wageh

    (Department of Physics, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
    K.A.CARE Energy Research and Innovation Center, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
    Physics and Engineering Mathematics Department, Faculty of Electronic Engineering, Menoufia University, Menouf 32952, Egypt)

Abstract

Light-emitting diodes based on quantum dots as an active emission can be considered as a promising next generation for application in displays and lighting. We report a theoretical investigation of green emission at 550 nm of microcavity inorganic–organic light-emitting devices based on Zn (Te, Se) alloy quantum dots as an active layer. Distributed Bragg Reflector (DBR) has been applied as a bottom mirror. The realization of high-quality DBR consisting of both high and low refractive index structures is investigated. The structures applied for high refractive index layers are (ZrO 2 , SiN x , ZnS), while those applied for low index layers are (Zr, SiO 2 , CaF 2 ). DBR of ZnS/CaF 2 consisting of three pairs with a high refractive index step of ( Δ n = 0.95) revealed a broad stop bandwidth (178 nm) and achieved a high reflectivity of 0.914.

Suggested Citation

  • Iman E. Shaaban & Ahmed S. Samra & Shabbir Muhammad & Swelm Wageh, 2022. "Design of Distributed Bragg Reflectors for Green Light-Emitting Devices Based on Quantum Dots as Emission Layer," Energies, MDPI, vol. 15(3), pages 1-17, February.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:3:p:1237-:d:744507
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    References listed on IDEAS

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    1. Heng Zhang & Qiang Su & Shuming Chen, 2020. "Quantum-dot and organic hybrid tandem light-emitting diodes with multi-functionality of full-color-tunability and white-light-emission," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
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