NDLI: High-efficiency CdTe/CdS core/shell nanocrystals in water enabled by photo-induced colloidal hetero-epitaxy of CdS shelling at room temperature

Content Provider	Springer Nature Link
Author	Zare, Hakimeh Marandi, Maziar Fardindoost, Somayeh Sharma, Vijay Kumar Yeltik, Aydan Akhavan, Omid Demir, Hilmi Volkan Taghavinia, Nima
Copyright Year	2015
Abstract	We report high-efficiency CdTe/CdS core/shell nanocrystals synthesized in water by epitaxially growing CdS shells on aqueous CdTe cores at room temperature, enabled by the controlled release of S species under low-intensity ultraviolet (UV) light illumination. The resulting photo-induced dissociation of S$_{2}$O 3 2− ions conveniently triggers the formation of critical two-dimensional CdS epitaxy on the CdTe surface at room temperature, as opposed to initiating the growth of individual CdS core-only nanocrystals. This controlled colloidal hetero-epitaxy leads to a substantial increase in the photoluminescence (PL) quantum yield (QY) of the shelled nanocrystals in water (reaching 64%). With a systematic set of studies, the maximum PL QY is found to be almost independent of the illuminating UV intensity, while the shell formation kinetics required for reaching the maximum QY linearly depends on the illuminating UV intensity. A stability study of the QD films in air at various temperatures shows highly improved thermal stability of the shelled QDs (up to 120 °C in ambient air). These results indicate that the proposed aqueous CdTe/CdS core/shell nanocrystals hold great promise for applications requiring efficiency and stability.
Starting Page	2317
Ending Page	2328
Page Count	12
File Format	PDF
ISSN	19980124
Journal	Nano Research
Volume Number	8
Issue Number	7
e-ISSN	19980000
Language	English
Publisher	Tsinghua University Press
Publisher Date	2015-05-19
Publisher Place	Beijing
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CdTe/CdS core/shell nanocrystal thermal stability photochemical Nanotechnology Materials Science Atomic/Molecular Structure and Spectra Condensed Matter Physics Biotechnology Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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

High-efficiency CdTe/CdS core/shell nanocrystals in water enabled by photo-induced colloidal hetero-epitaxy of CdS shelling at room temperature

Sodium lanthanide fluoride core-shell nanocrystals: A general perspective on epitaxial shell growth

Shell-thickness dependent optical properties of CdSe/CdS core/shell nanocrystals coated with thiol ligands

One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells

III–V semiconductor nanocrystal formation in silicon nanowires via liquid-phase epitaxy

A perspective on functionalizing colloidal quantum dots with DNA

Solution-processed efficient CdTe nanocrystal/CBD-CdS hetero-junction solar cells with ZnO interlayer

Composition- and oxidation-controlled magnetism in ternary FeCoNi nanocrystals

Surface activation of colloidal indium phosphide nanocrystals

High-efficiency CdTe/CdS core/shell nanocrystals in water enabled by photo-induced colloidal hetero-epitaxy of CdS shelling at room temperature

Similar Documents

High-efficiency CdTe/CdS core/shell nanocrystals in water enabled by photo-induced colloidal hetero-epitaxy of CdS shelling at room temperature

Sodium lanthanide fluoride core-shell nanocrystals: A general perspective on epitaxial shell growth

Shell-thickness dependent optical properties of CdSe/CdS core/shell nanocrystals coated with thiol ligands

One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells

III–V semiconductor nanocrystal formation in silicon nanowires via liquid-phase epitaxy

A perspective on functionalizing colloidal quantum dots with DNA

Solution-processed efficient CdTe nanocrystal/CBD-CdS hetero-junction solar cells with ZnO interlayer

Composition- and oxidation-controlled magnetism in ternary FeCoNi nanocrystals

Surface activation of colloidal indium phosphide nanocrystals

High-efficiency CdTe/CdS core/shell nanocrystals in water enabled by photo-induced colloidal hetero-epitaxy of CdS shelling at room temperature