Luminescence and Morphological Kinetics of Functionalized ZnS Colloidal Nanocrystals
Joint Authors
Sana, Prabha
Hashmi, Lubna
Malik, M. M.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-02-02
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
This paper reports functionalized zinc sulphide (ZnS) semiconductor nanocrystals (quantum dots, approx., 2.5 nm) which are an important building block in self-assembled nanostructures.
ZnS is functionalized by organic stabilizer Thio glycolic acid (TGA).
The samples have been synthesized by colloidal technique at relatively low temperature (below 100°C) at an atmospheric pressure of 10-3 torr.
Manganese (Mn) doping ions have been incorporated (doped) in ZnS host lattice and observed its effect on growth morphology and optical properties of ZnS colloidal nanocrystals.
By XRD, SEM, TEM, and PL, the obtained cubic phase nanosized TGA-capped ZnS materials were characterized.
The morphology of ZnS obtained at different temperatures are analyzed by SEM.
The crystallite size of the ZnS nanoparticles was estimated from the X-ray diffraction pattern by using Scherrer’s formula (approximately 2.5 nm) which is confirmed by TEM.
The estimated bandgap value of ZnS NC’s by (αhύ)2 versus hύ plot was 4.89 eV.
Gaussian fitting curve in photoluminescence (PL) spectra indicated room temperature emission wavelength range from 300 to 500 nm in undoped and Mn-doped ZnS, with different emission peak intensities, and suggested the wide band emission colours in visible and near UV region which has wider applications in optical devices.
American Psychological Association (APA)
Sana, Prabha& Hashmi, Lubna& Malik, M. M.. 2012. Luminescence and Morphological Kinetics of Functionalized ZnS Colloidal Nanocrystals. ISRN Optics،Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-485904
Modern Language Association (MLA)
Sana, Prabha…[et al.]. Luminescence and Morphological Kinetics of Functionalized ZnS Colloidal Nanocrystals. ISRN Optics No. 2012 (2012), pp.1-8.
https://search.emarefa.net/detail/BIM-485904
American Medical Association (AMA)
Sana, Prabha& Hashmi, Lubna& Malik, M. M.. Luminescence and Morphological Kinetics of Functionalized ZnS Colloidal Nanocrystals. ISRN Optics. 2012. Vol. 2012, no. 2012, pp.1-8.
https://search.emarefa.net/detail/BIM-485904
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-485904