Cargando…

Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance

The use of nanocrystals as materials for potential technological applications depends on tailoring their properties through intentional doping with external impurities. We have used a new technique to synthesize nanocrystal thin films of CdSe:Cu(2)Se containing different weight percentages (wt%) of...

Descripción completa

Detalles Bibliográficos
Autores principales: Babu, N. Sajid, Khadar, M. Abdul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9050001/
https://www.ncbi.nlm.nih.gov/pubmed/35496572
http://dx.doi.org/10.1039/c9ra10251e
_version_ 1784696268581240832
author Babu, N. Sajid
Khadar, M. Abdul
author_facet Babu, N. Sajid
Khadar, M. Abdul
author_sort Babu, N. Sajid
collection PubMed
description The use of nanocrystals as materials for potential technological applications depends on tailoring their properties through intentional doping with external impurities. We have used a new technique to synthesize nanocrystal thin films of CdSe:Cu(2)Se containing different weight percentages (wt%) of Cu(2)Se. The films were deposited on glass substrates at room temperature by co-evaporation of CdSe and Cu(2)Se powder in nitrogen gas at a pressure larger than that required for conventional thin film deposition. The films consisted of nanograins of CdSe doped with Cu(2)Se (i.e., nanograins of Cd(1−x)Cu(2(x))Se where x is the atom% of Cu(2)Se doped into CdSe) for lower wt% of Cu(2)Se, and nanocomposites of Cd(1−x)Cu(2(x))Se and Cu(2)Se for higher wt% of Cu(2)Se. An energy band diagram built using the Anderson model was used for discussing the heterojunction characteristics of the junction between nanograins of Cd(1−x)Cu(2(x))Se and Cu(2)Se. To investigate the usefulness of the nanocrystal thin films of CdSe:Cu(2)Se for practical applications, the I–V characteristics of p–p and p–n hetero-junctions formed by the films respectively with nanostructured films of similarly deposited Cu(2)Se and CdSe films were studied.
format Online
Article
Text
id pubmed-9050001
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90500012022-04-29 Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance Babu, N. Sajid Khadar, M. Abdul RSC Adv Chemistry The use of nanocrystals as materials for potential technological applications depends on tailoring their properties through intentional doping with external impurities. We have used a new technique to synthesize nanocrystal thin films of CdSe:Cu(2)Se containing different weight percentages (wt%) of Cu(2)Se. The films were deposited on glass substrates at room temperature by co-evaporation of CdSe and Cu(2)Se powder in nitrogen gas at a pressure larger than that required for conventional thin film deposition. The films consisted of nanograins of CdSe doped with Cu(2)Se (i.e., nanograins of Cd(1−x)Cu(2(x))Se where x is the atom% of Cu(2)Se doped into CdSe) for lower wt% of Cu(2)Se, and nanocomposites of Cd(1−x)Cu(2(x))Se and Cu(2)Se for higher wt% of Cu(2)Se. An energy band diagram built using the Anderson model was used for discussing the heterojunction characteristics of the junction between nanograins of Cd(1−x)Cu(2(x))Se and Cu(2)Se. To investigate the usefulness of the nanocrystal thin films of CdSe:Cu(2)Se for practical applications, the I–V characteristics of p–p and p–n hetero-junctions formed by the films respectively with nanostructured films of similarly deposited Cu(2)Se and CdSe films were studied. The Royal Society of Chemistry 2020-03-02 /pmc/articles/PMC9050001/ /pubmed/35496572 http://dx.doi.org/10.1039/c9ra10251e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Babu, N. Sajid
Khadar, M. Abdul
Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title_full Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title_fullStr Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title_full_unstemmed Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title_short Composite formation in CdSe:Cu(2)Se nanocrystal films, charge transport characteristics and heterojunction performance
title_sort composite formation in cdse:cu(2)se nanocrystal films, charge transport characteristics and heterojunction performance
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9050001/
https://www.ncbi.nlm.nih.gov/pubmed/35496572
http://dx.doi.org/10.1039/c9ra10251e
work_keys_str_mv AT babunsajid compositeformationincdsecu2senanocrystalfilmschargetransportcharacteristicsandheterojunctionperformance
AT khadarmabdul compositeformationincdsecu2senanocrystalfilmschargetransportcharacteristicsandheterojunctionperformance