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Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

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Central European Journal of Physics

Abstract

ZnO:Mn semiconductor quantum dots were prepared by solution casting led microemulsion route. Quantum dots of average size ∼2 nm were noticed in transmission electron micrographs. The present work highlights colour change phenomena (photochromic effect) of quantum dots while subjected to photon illumination. The magneto-optic measurements e.g. magnetic field (H) vs angle of rotation (θ) show step like behavior and is ascribed to the quantum confinement effect of diluted magnetic ZnO:Mn nanostructures. Further, underlying mechanism responsible for exhibiting photochromism and magneto-optic effects are also discussed.

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Authors and Affiliations

  1. Nanoscience Laboratory, Department of Physics, Tezpur University, P.O. Napaam, Tezpur-784 028, Assam, India

    Nirmal Misra, Mohendra Roy, Dambarudhar Mohanta, Kishor Kumar Baruah & Amarjyoti Choudhury

  2. Laboratory for Molecular Scale Engineering, Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Wisconsin, WI, 53706, USA

    Dambarudhar Mohanta

  3. Gopinath Bordoloi Nagar, Gauhati University, Guwahati-781 014, Assam, India

    Amarjyoti Choudhury

Authors
  1. Nirmal Misra
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  2. Mohendra Roy
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  3. Dambarudhar Mohanta
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  4. Kishor Kumar Baruah
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  5. Amarjyoti Choudhury
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Correspondence to Dambarudhar Mohanta.

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Misra, N., Roy, M., Mohanta, D. et al. Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route. centr.eur.j.phys. 6, 109–115 (2008). https://doi.org/10.2478/s11534-008-0025-1

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  • DOI: https://doi.org/10.2478/s11534-008-0025-1

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