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LED Materials: Epitaxy and Quantum Well Structures

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Handbook of Advanced Lighting Technology

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Abstract

This chapter describes how, in order to achieve low droop and high-efficiency light-emitting diodes (LEDs), we investigated the following multiple quantum wells (MQWs) and electron-blocking layer (EBL) design to enhance our LED devices: graded-thickness multiple quantum wells (GQWs), graded-composition multiple quantum barriers (GQBs), selectively graded-composition multiple quantum barriers (SGQBs), and graded-composition electron-blocking layer (GEBL). Besides, the crystal quality of the epitaxial layer was enhanced by introducing freestanding GaN substrate for the epitaxial growth of III-nitride epilayer. On the other hand, in recent years, the epitaxial growth of GaN-based materials on Si substrate has a great potential for applications in low-cost and high-efficiency LEDs. Hence, the properties of GaN-based LEDs on Si will also be described in this chapter.

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Authors and Affiliations

  1. Department of Photonics and Institute of Electro-Optical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, 30010, Hsinchu, Taiwan

    Zhen-Yu Li, Hao-Chung Kuo, Ching-Hsueh Chiu & Po-Min Tu

  2. Department of Optics and Photonics, National Central University, Jhongli City, Taiwan

    Chen-Yu Shieh

  3. Department of Electronic Engineering, College of Electrical Engineering and Computer Science, Chung Yuan Christian University, Chung-Li, 32023, Taiwan

    Wu-Yih Uen

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  1. Zhen-Yu Li
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  2. Hao-Chung Kuo
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  3. Chen-Yu Shieh
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  4. Ching-Hsueh Chiu
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  5. Po-Min Tu
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  6. Wu-Yih Uen
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Correspondence to Zhen-Yu Li .

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Editors and Affiliations

  1. Smart Lighting Engineering Center, Rensselaer Polytechnic Institute, Troy, New York, USA

    Robert Karlicek

  2. Department of Optics and Photonics, National Central University, Jhongli, Taiwan

    Ching-Cherng Sun

  3. Toulouse University, Toulouse, France

    Georges Zissis

  4. OLED Lighting, Universal Display Corporation, Ewing, USA

    Ruiqing Ma

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Li, ZY., Kuo, HC., Shieh, CY., Chiu, CH., Tu, PM., Uen, WY. (2017). LED Materials: Epitaxy and Quantum Well Structures. In: Karlicek, R., Sun, CC., Zissis, G., Ma, R. (eds) Handbook of Advanced Lighting Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-00176-0_10

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