Growth and optical properties of CaxCoO2 thin films
The layered cobaltates AxCoO2 (A = Li, Na, Ca, Ba, Sr) are of interest for energy applications such as thermoelectrics and batteries. However, it is challenging to obtain these phases in pure from as thin films. Here, phase-pure CaxCoO2 (x ~ 0.5) thin films were obtained by annealing of Ca(OH)2/Co3O...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-11-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127521005888 |
| _version_ | 1818691613472325632 |
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| author | Binbin Xin Arnaud Le Febvrier Lei Wang Niclas Solin Biplab Paul Per Eklund |
| author_facet | Binbin Xin Arnaud Le Febvrier Lei Wang Niclas Solin Biplab Paul Per Eklund |
| author_sort | Binbin Xin |
| collection | DOAJ |
| description | The layered cobaltates AxCoO2 (A = Li, Na, Ca, Ba, Sr) are of interest for energy applications such as thermoelectrics and batteries. However, it is challenging to obtain these phases in pure from as thin films. Here, phase-pure CaxCoO2 (x ~ 0.5) thin films were obtained by annealing of Ca(OH)2/Co3O4 multilayers made by moisture treatment of sputter-deposited CaO/Co3O4 multilayer films. The pure CaxCoO2 thin films exhibit an average optical transmittance of approximately 36% in the visible region and greater than 70% in the near-infrared (NIR) region. In addition, the electrical conductivity can be increased by incorporating a secondary Ca3Co4O9 phase into the CaxCoO2 thin film without large changes in optical properties and Seebeck coefficient. |
| first_indexed | 2024-12-17T12:44:41Z |
| format | Article |
| id | doaj.art-fa69573f4fb04020a8a060a8d29bae08 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-17T12:44:41Z |
| publishDate | 2021-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-fa69573f4fb04020a8a060a8d29bae082022-12-21T21:47:47ZengElsevierMaterials & Design0264-12752021-11-01210110033Growth and optical properties of CaxCoO2 thin filmsBinbin Xin0Arnaud Le Febvrier1Lei Wang2Niclas Solin3Biplab Paul4Per Eklund5Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden; Corresponding authors.Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, SwedenElectronic and Photonic Materials Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, SwedenElectronic and Photonic Materials Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, SwedenThin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, SwedenThin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-58183 Linköping, Sweden; Corresponding authors.The layered cobaltates AxCoO2 (A = Li, Na, Ca, Ba, Sr) are of interest for energy applications such as thermoelectrics and batteries. However, it is challenging to obtain these phases in pure from as thin films. Here, phase-pure CaxCoO2 (x ~ 0.5) thin films were obtained by annealing of Ca(OH)2/Co3O4 multilayers made by moisture treatment of sputter-deposited CaO/Co3O4 multilayer films. The pure CaxCoO2 thin films exhibit an average optical transmittance of approximately 36% in the visible region and greater than 70% in the near-infrared (NIR) region. In addition, the electrical conductivity can be increased by incorporating a secondary Ca3Co4O9 phase into the CaxCoO2 thin film without large changes in optical properties and Seebeck coefficient.http://www.sciencedirect.com/science/article/pii/S0264127521005888CaxCoO2Thin filmOptical propertiesThermoelectric |
| spellingShingle | Binbin Xin Arnaud Le Febvrier Lei Wang Niclas Solin Biplab Paul Per Eklund Growth and optical properties of CaxCoO2 thin films Materials & Design CaxCoO2 Thin film Optical properties Thermoelectric |
| title | Growth and optical properties of CaxCoO2 thin films |
| title_full | Growth and optical properties of CaxCoO2 thin films |
| title_fullStr | Growth and optical properties of CaxCoO2 thin films |
| title_full_unstemmed | Growth and optical properties of CaxCoO2 thin films |
| title_short | Growth and optical properties of CaxCoO2 thin films |
| title_sort | growth and optical properties of caxcoo2 thin films |
| topic | CaxCoO2 Thin film Optical properties Thermoelectric |
| url | http://www.sciencedirect.com/science/article/pii/S0264127521005888 |
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