|   | 
Details
   web
Record
Author (up) Sakthivel, P.; Mangalaraja, R.V.; Ramalingam, G.; Sakthipandi, K.; Gowtham, V.
Title Synthesis, Structure, Morphology, Element composition, Electrochemical, and Optical studies of Zn0.98-XMn0.02CeX Quantum dots Type
Year 2023 Publication Spectrochimica Acta-Part A: Molecular and Biomolecular Spectroscopy Abbreviated Journal Spectrochim. Acta A Mol. Biomol. Spectrosc.
Volume 303 Issue Pages 123140
Keywords ZnS; HR-TEM; Cyclic voltammetry; Band gap; Rare earth; Photoluminescence
Abstract Quantum dots (QDs) are semiconductors whose size falls in a range between 1 and 10 nm; they are generally known as zero-dimension materials. It finds various applications in optical industries including light-emitting diodes, display technology, imaging, and labelling. ZnS is one of the excellent QDs in its class of II-VI semiconductors. In this paper, It is reported that the preparation of Mn-doped ZnS and Mn, Ce co-doped ZnS QDs using facile co-precipitation technique. XRD and HR-TEM results confirmed the cubic structure, particle size, and phase of the synthesized particles, and the crystallite is measured as -2 nm. The surface morphology, elemental analysis, and FT-IR spectra revealed the purity of the samples and confirmed the presence of dopants as expected. Cyclic voltammetry studies expressed the electrochemical behaviour of the samples, which increased as a function of Ce3+ doping concentration. UV-visible absorbance and transmittance spectra disclosed the optical characteristics of the samples. A wide band gap (4.02 eV) was received for 2% Ce-doped Zn: MnS QDs. Week Blue and strong yellow emissions were received for 4% Ce-doped Zn:MnS QDs. Whereas, high intensity red-emission was received for 2% Ce-doped Zn:MnS QDs. The different colour emissions are discussed in terms of defects produced.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1386-1425 ISBN Medium
Area Expedition Conference
Notes WOS:001058679500001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1885
Permanent link to this record