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Synthesis, Properties, and Applications of II–VI Semiconductor Core/Shell Quantum Dots

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Core/Shell Quantum Dots

Part of the book series: Lecture Notes in Nanoscale Science and Technology ((LNNST,volume 28))

Abstract

Semiconductor core/shell quantum dots (QDs) are composed of at least two semiconducting materials having a structure like an onion. In the recent past, the synthesis of these systems impelled significant progress, as by growing an epitaxial shell, we can easily tune basic optical properties such as fluorescence quantum yield, emission wavelength, and carrier lifetime. The significance of developing an epitaxial shell over the surface of core QDs is making the nanocrystal less sensitive to environmental changes and photo-oxidation. Another advantage is the enhancement of fluorescence quantum yield by passivating surface trap states of core QDs. These properties are essential for the application of semiconductor core/shell QDs in light-emitting diodes, solar cell, and biological labelling. This chapter discusses the synthesis and microstructural and optical properties of mostly II–VI semiconductor, core/shell QDs. Moreover, various applications of core/shell QDs in solar cells, light-emitting diode, and biomedical have been also discussed in detail.

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Acknowledgments

Authors thank “Science and Engineering Research Board (SERB), Government of India,” for financial assistance under the project number EEQ/2016/000652. ANY thanks UGC, New Delhi, for junior research fellowship.

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Authors and Affiliations

  1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi, India

    Amar Nath Yadav, Ashwani Kumar Singh & Kedar Singh

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  1. Amar Nath Yadav
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  2. Ashwani Kumar Singh
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Correspondence to Kedar Singh .

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  1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China

    Xin Tong

  2. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, China

    Zhiming M. Wang

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Yadav, A.N., Singh, A.K., Singh, K. (2020). Synthesis, Properties, and Applications of II–VI Semiconductor Core/Shell Quantum Dots. In: Tong, X., M. Wang, Z. (eds) Core/Shell Quantum Dots. Lecture Notes in Nanoscale Science and Technology, vol 28. Springer, Cham. https://doi.org/10.1007/978-3-030-46596-4_1

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