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Advanced Materials

Photoenhancement of a Quantum Dot Nanocomposite via UV Annealing and its Application to White LEDs

Authors

  • Kyungnam Kim,

    1. Dept. Nano-Mechanics, Korea Institute of Machinery & Materials, 171 Jang Yuseong Daejeon 305343, Republic of Korea
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  • Ju Yeon Woo,

    1. Dept. Nano-Mechanics, Korea Institute of Machinery & Materials, 171 Jang Yuseong Daejeon 305343, Republic of Korea
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  • Sohee Jeong,

    1. Dept. Nano-Mechanics, Korea Institute of Machinery & Materials, 171 Jang Yuseong Daejeon 305343, Republic of Korea
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  • Chang-Soo Han

    Corresponding author
    1. Dept. Nano-Mechanics, Korea Institute of Machinery & Materials, 171 Jang Yuseong Daejeon 305343, Republic of Korea
    • Dept. Nano-Mechanics, Korea Institute of Machinery & Materials, 171 Jang Yuseong Daejeon 305343, Republic of Korea.
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Abstract

The irreversible photoenhancement of a quantum dot (QD) nanocomposite is demonstrated using UV photo-annealing. The QD nanocomposite consists of a mixture of thermally curable polymer and a QD, which is synthesized as a core/multishell nanocrystal, CdSe/CdS/CdZnS/ZnS. Exposure under 365-nm UV illumination for 30 min at 70 W surprisingly reveals that the photoluminescence of the QD nanocomposite increases 1.8 times.

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