NDLI: Stable and luminescent wurtzite CdS, ZnS and CdS/ZnS core/shell quantum dots

Content Provider	Springer Nature Link
Author	Kumar, Hitanshu Kumar, Maj Barman, P. B. Singh, Ragini Raj
Copyright Year	2014
Abstract	This article presents first report on the highly stable and luminescent wurtzite CdS, ZnS and CdS/ZnS quantum dots (QDs) where the role of precursor selection at room temperature is the key. X-ray diffraction (XRD), optical absorbance spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy and transmission electron microscopy have been employed in order to characterize these QDs. XRD indicates the formation of wurtzite CdS, ZnS and CdS/ZnS system. Broadening in XRD peaks revealed the reduction in particle size such as 4.2, 5.2 and 5.8 nm for CdS, ZnS and CdS/ZnS, respectively, compared to their bulk counterparts. Blue shift in absorbance has been observed in each case as particles size decreases. The photoluminescence intensity emission of CdS/ZnS core/shell was strongly superior from that observed in individual CdS and ZnS nanoparticles. We also propose that the core and shell interface leads to favourable conditions that instigate photoluminescence emission in CdS/ZnS core/shell system. One notable result of this work obtained from the photoluminescence analysis is the significant reduction in full width at half maxima, in emission peak of core/shell structure which shows the enhanced monochromaticity. We have found that OH, CH2 and C–O functional groups are present on the QDs surface and that is why these QDs can be easily attachable to biomolecules. TEM analysis has been employed for confirmation of particle size and found to be 5.3, 5.8 and 6.2 nm for CdS, ZnS and CdS/ZnS structures, respectively. .
Starting Page	1249
Ending Page	1258
Page Count	10
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	117
Issue Number	3
e-ISSN	14320630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-06-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Condensed Matter Physics Optical and Electronic Materials Nanotechnology Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films Operating Procedures, Materials Treatment
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Resonant Raman scattering of ZnS, ZnO, and ZnS/ZnO core/shell quantum dots

CdSe & ZnS core/shell nanoparticles generated by laser ablation of microparticles

Fabrication and micro-photoluminescence property of CdSe/CdS core/shell nanowires

Highly fluorescent semiconductor core–shell CdTe–CdS nanocrystals for monitoring living yeast cells activity

Differential capacitance of hybrid organic/inorganic CdSe/ZnS quantum dots light-emitting device

Silicon–germanium interdiffusion and interfaces in self-assembled quantum dots

Type II hybrid structures of TiO2 nanorods conjugated with CdS quantum dots: assembly and optical properties

Fabrication and optical study of Ag@SnO2 core-shell structure nanoparticle thin films

CdSe-ZnS quantum dots as temperature sensors during thermal coagulation of bovine serum albumin (BSA) solder

Stable and luminescent wurtzite CdS, ZnS and CdS/ZnS core/shell quantum dots

Similar Documents

Resonant Raman scattering of ZnS, ZnO, and ZnS/ZnO core/shell quantum dots

CdSe & ZnS core/shell nanoparticles generated by laser ablation of microparticles

Fabrication and micro-photoluminescence property of CdSe/CdS core/shell nanowires

Highly fluorescent semiconductor core–shell CdTe–CdS nanocrystals for monitoring living yeast cells activity

Differential capacitance of hybrid organic/inorganic CdSe/ZnS quantum dots light-emitting device

Silicon–germanium interdiffusion and interfaces in self-assembled quantum dots

Type II hybrid structures of TiO2 nanorods conjugated with CdS quantum dots: assembly and optical properties

Fabrication and optical study of Ag@SnO2 core-shell structure nanoparticle thin films

CdSe-ZnS quantum dots as temperature sensors during thermal coagulation of bovine serum albumin (BSA) solder

Stable and luminescent wurtzite CdS, ZnS and CdS/ZnS core/shell quantum dots