The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique
ZnO:In films with different concentrations (0–5 at.%) are successfully synthesized on quartz substrates using sol-gel technique. The structure, morphology, and optical properties of ZnO:In films are investigated by X-ray diffraction, atomic force microscopy, and UV-visible spectrophotometer. It is f...
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| Format: | Article |
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Wiley
2013-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2013/348601 |
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| author | Guomei Tang Hua Liu Wei Zhang |
| author_facet | Guomei Tang Hua Liu Wei Zhang |
| author_sort | Guomei Tang |
| collection | DOAJ |
| description | ZnO:In films with different concentrations (0–5 at.%) are successfully synthesized on quartz substrates using sol-gel technique. The structure, morphology, and optical properties of ZnO:In films are investigated by X-ray diffraction, atomic force microscopy, and UV-visible spectrophotometer. It is found that all the films with columnar structural morphology grow along the preferred [001] orientation and the incorporation of indium can improve the crystallinity of ZnO films. The transmittance of the films is about 80% in the visible range. A change of the optical absorption edge from blue shift to red shift is observed for ZnO:In films as the doping concentration increases, which means that the optical band gap first increases and then decreases. The blue shift is due to the Burstein-Moss effect. The sharp jump of the absorption edge from blue-shift to red shift is ascribe to the band gap narrowing caused by the merging of the donor and conduction bands of ZnO:In at high doping concentration. |
| format | Article |
| id | doaj-art-d8de7ba6e8a34e53adefe2e79a634f12 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-d8de7ba6e8a34e53adefe2e79a634f122025-08-20T03:24:16ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422013-01-01201310.1155/2013/348601348601The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel TechniqueGuomei Tang0Hua Liu1Wei Zhang2School of Mathematics and Computer Science Institute, Northwest University for Nationalities, Lanzhou 730030, ChinaSchool of Mathematics and Computer Science Institute, Northwest University for Nationalities, Lanzhou 730030, ChinaSchool of Physical Science and Technology, Lanzhou University, Lanzhou 730000, ChinaZnO:In films with different concentrations (0–5 at.%) are successfully synthesized on quartz substrates using sol-gel technique. The structure, morphology, and optical properties of ZnO:In films are investigated by X-ray diffraction, atomic force microscopy, and UV-visible spectrophotometer. It is found that all the films with columnar structural morphology grow along the preferred [001] orientation and the incorporation of indium can improve the crystallinity of ZnO films. The transmittance of the films is about 80% in the visible range. A change of the optical absorption edge from blue shift to red shift is observed for ZnO:In films as the doping concentration increases, which means that the optical band gap first increases and then decreases. The blue shift is due to the Burstein-Moss effect. The sharp jump of the absorption edge from blue-shift to red shift is ascribe to the band gap narrowing caused by the merging of the donor and conduction bands of ZnO:In at high doping concentration.http://dx.doi.org/10.1155/2013/348601 |
| spellingShingle | Guomei Tang Hua Liu Wei Zhang The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique Advances in Materials Science and Engineering |
| title | The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique |
| title_full | The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique |
| title_fullStr | The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique |
| title_full_unstemmed | The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique |
| title_short | The Variation of Optical Band Gap for ZnO:In Films Prepared by Sol-Gel Technique |
| title_sort | variation of optical band gap for zno in films prepared by sol gel technique |
| url | http://dx.doi.org/10.1155/2013/348601 |
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