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Browsing by Author "Chang, Chih-Sung"

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    Enhanced Light Extraction in Wafer-Bonded AlGaInP-Based Light-Emitting Diodes via Micro- and Nanoscale Surface Textured
    (2009-10-01)
    Lee, Yea-Chen
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    Kuo, Hao-Chung
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    Cheng, Bo-Siao
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    Lee, Chia-En
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    Chiu, Ching-Hua
    AlGaInP-based metal-bonding light-emitting diodes (LEDs) with micro- and nanoscale textured surface were investigated. The device surface with microbowls and nanorods were formed by a chemical wet-etching and dry-etching technique for enhancing light-extraction purpose. The luminous intensity could be enhanced 65.8% under 20-mA current injection as compared with the plane surface LEDs. The maximum wall-plug efficiency was achieved 14.1% at 7.5-mA operation.