Nonlinear Optical Properties of CdSe Quantum Dots Having Different Sizes-Reference-Cited by-同舟云学术

Nonlinear Optical Properties of CdSe Quantum Dots Having Different Sizes

Published:2020-12-01 Issue:12 Volume:20 Page:7710-7715
ISSN:1533-4880
Container-title:Journal of Nanoscience and Nanotechnology
language:en
Short-container-title:j nanosci nanotechnol

Author:

Ramya Emusani¹,Kushavah Dushyant²,Veeramohan RaO M.³,Arun Kumar T.¹,Narayana Rao D.⁴

Affiliation:

1. Department of Science and Humanities, MLR Institute of Technology, Dundigal 500043, Hyderabad, India

2. School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175005, HP, India

3. School of Physics, Pondichery University, Pondichery 605014, India

4. School of Physics, University of Hyderabad, 500046, Hyderabad, India

Abstract

We synthesis different sizes of cadmium selenide quantum dots (CdSe QDs) and their linear and nonlinear optical properties. Size-controlled CdSe QDs are characterized by ultraviolet-visible absorption, photoluminescence, transmission electron microscope (TEM), and Z-scan techniques. Redshift was observed in the linear absorption and photoluminescence with an increase in the size of CdSe QDs. TEM images show the sizes of the QDs are 2.2 nm–4.9 nm. Bandgap tuning CdSe QDs of third-order nonlinear optical properties are investigated at 532 nm with an open aperture Z-scan technique using a picosecond laser. These CdSe QDs can be used as optical limiters.

Publisher

American Scientific Publishers

Subject

Condensed Matter Physics,General Materials Science,Biomedical Engineering,General Chemistry,Bioengineering

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