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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...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2020
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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 |
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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 |