Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films
The optical behaviour, stoichiometry, surface configuration of Cu _2 Se nanostructured thin layers prepared at different reaction times by the chemical process has been considered. The optical band gap of the deposited thin films decreases from 2.92 eV to 2.08 eV for the first transition and from 2....
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ac5f36 |
| _version_ | 1797746618335756288 |
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| author | Nader Ghobadi Ebrahim Gholami Hatam |
| author_facet | Nader Ghobadi Ebrahim Gholami Hatam |
| author_sort | Nader Ghobadi |
| collection | DOAJ |
| description | The optical behaviour, stoichiometry, surface configuration of Cu _2 Se nanostructured thin layers prepared at different reaction times by the chemical process has been considered. The optical band gap of the deposited thin films decreases from 2.92 eV to 2.08 eV for the first transition and from 2.18 to 1.2 eV for the second transition. In addition, it was shown that Urbach energy is independent from the film thickness, and tail values of the localized states has decreased from 1.15 to 0.33 eV. It was found that the concentration of Cu: Se remains approximately constant across the depth of the deposited film at higher deposition time. The degradation efficiency of 98% was achieved by Congo red for the prepared Cu2Se thin film at optimal condition which make it a good candidate for organic dye. From these measurements and by controlling the band gap energy, the Cu2Se can find application in solar cell application. |
| first_indexed | 2024-03-12T15:39:27Z |
| format | Article |
| id | doaj.art-a8182ea8bbbc4a68b7ddc440a599c875 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:39:27Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-a8182ea8bbbc4a68b7ddc440a599c8752023-08-09T16:04:08ZengIOP PublishingMaterials Research Express2053-15912022-01-019303500710.1088/2053-1591/ac5f36Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin filmsNader Ghobadi0https://orcid.org/0000-0002-9957-9395Ebrahim Gholami Hatam1https://orcid.org/0000-0001-7305-274XDepartment of Physics, Faculty of Science, Malayer University , Malayer, IranDepartment of Physics, Faculty of Science, Malayer University , Malayer, IranThe optical behaviour, stoichiometry, surface configuration of Cu _2 Se nanostructured thin layers prepared at different reaction times by the chemical process has been considered. The optical band gap of the deposited thin films decreases from 2.92 eV to 2.08 eV for the first transition and from 2.18 to 1.2 eV for the second transition. In addition, it was shown that Urbach energy is independent from the film thickness, and tail values of the localized states has decreased from 1.15 to 0.33 eV. It was found that the concentration of Cu: Se remains approximately constant across the depth of the deposited film at higher deposition time. The degradation efficiency of 98% was achieved by Congo red for the prepared Cu2Se thin film at optimal condition which make it a good candidate for organic dye. From these measurements and by controlling the band gap energy, the Cu2Se can find application in solar cell application.https://doi.org/10.1088/2053-1591/ac5f36Cu2Senanostructureoptical band gapurbach energyphotocatalytic |
| spellingShingle | Nader Ghobadi Ebrahim Gholami Hatam Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films Materials Research Express Cu2Se nanostructure optical band gap urbach energy photocatalytic |
| title | Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films |
| title_full | Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films |
| title_fullStr | Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films |
| title_full_unstemmed | Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films |
| title_short | Optical band gap, photocatalysis, surface structures and depth profile properties of Cu2Se nanostructured thin films |
| title_sort | optical band gap photocatalysis surface structures and depth profile properties of cu2se nanostructured thin films |
| topic | Cu2Se nanostructure optical band gap urbach energy photocatalytic |
| url | https://doi.org/10.1088/2053-1591/ac5f36 |
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