The Light Extraction Efficiency for DUV LEDs

  • Zi-Hui ZhangEmail author
  • Chunshuang Chu
  • Kangkai Tian
  • Yonghui Zhang
Part of the SpringerBriefs in Applied Sciences and Technology book series (BRIEFSAPPLSCIENCES)


DUV LEDs have very low light extraction efficiency (LEE), which is caused by the unique optical polarization and the optically absorptive semiconductor and metal layers. This chapter reviews and analyzes the approaches that have ever been used to improve the LEE. This chapter also points out that, the removal of the p-GaN layer can yield a high LEE without guaranteeing the enhanced wall plug efficiency in the same time. Thus, even more effort shall be made to achieve excellent ohmic contact for DUV LEDs.


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Copyright information

© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Zi-Hui Zhang
    • 1
    Email author
  • Chunshuang Chu
    • 1
  • Kangkai Tian
    • 1
  • Yonghui Zhang
    • 1
  1. 1.School of Electronics and Information Engineering, Institute of Micro-Nano Photoelectron and Electromagnetic Technology InnovationHebei University of TechnologyTianjinChina

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