Study of quantum size effects and optical characteristics in colloidal Cd۱-xSnxTe quantum dotes

In this work, we report, optical properties of Cd1-xSnxTe quantum dots (x= 0.05, 0.10 and 0.15) synthesized in water using thioglycolic acid (TGA) as a modifier agent. The optical characterization of the samples was performed through absorption (UV) and photoluminescence spectra (PL). A red shift absorption and fluorescent emission peaks was observed which can be related to the increase of nanocrystals diameter with pass the reaction time. This size dependent phenomenon is concerned to the known “quantum confinement” effect and the highest quantum yield has been achieved under our experimental conditions (using thioglycolic acid (TGA) as a modifier agent) when the processing time reached to 150 min.

Study of quantum size effects and optical characteristics in colloidal Cd1-xSnxTe quantum dotes Keywords:

Semiconductor nanocrystals , Colloidal quantum dots , Quantum yield , Crystalline growth , Quantum confinement

Study of quantum size effects and optical characteristics in colloidal Cd1-xSnxTe quantum dotes authors

M. Seyedsadjadi

Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, ۱۴۷۷۸۹۲۸۵۵ Iran.

F. Asgari

Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, ۱۴۷۷۸۹۲۸۵۵ Iran.

N. Farhadyar

Department of Chemistry, Varamin –Pishva Branch, Islamic Azad University, Varamin, Iran.

N. Molahasani

Department of Chemistry, Tehran Shargh (Qiamdasht) Branch, Islamic Azad University, Tehran, Iran.

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Link to this Paper:

https://civilica.com/doc/1483165

Document National Code:

JR_IJND-5-1_008

Index date: 14 July 2022

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Seyedsadjadi, M. and Asgari, F. and Farhadyar, N. and Molahasani, N.,1393,Study of quantum size effects and optical characteristics in colloidal Cd1-xSnxTe quantum dotes,https://civilica.com/doc/1483165

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Ranking of Islamic Azad University of Science and Research Branch, Tehran

Type of center: دانشگاه آزاد

Paper count: 54,462

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