Optical Investigations of CdSe1-x Tex Thin Films
The alloys of CdSe1-xTex compound have been prepared from their elements successfully with high purity (99.9999%) which mixed stoichiometry ratio (x=0.0, 0.25, 0.5, 0.75 and 1.0) of (Cd, Se and Te) elements. Films of CdSe1-xTex alloys for different values of composition with thickness(0.5?m) have be...
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| Format: | Article |
| Language: | Arabic |
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College of Science for Women, University of Baghdad
2011-03-01
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| Series: | Baghdad Science Journal |
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| Online Access: | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1144 |
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| author | Baghdad Science Journal |
| author_facet | Baghdad Science Journal |
| author_sort | Baghdad Science Journal |
| collection | DOAJ |
| description | The alloys of CdSe1-xTex compound have been prepared from their elements successfully with high purity (99.9999%) which mixed stoichiometry ratio (x=0.0, 0.25, 0.5, 0.75 and 1.0) of (Cd, Se and Te) elements. Films of CdSe1-xTex alloys for different values of composition with thickness(0.5?m) have been prepared by thermal evaporation method at cleaned glass substrates which heated at (473K) under very low pressure (4×10-5mbar) at rate of deposition (3A?/s), after that thin films have been heat treated under low pressure (10-2mbar) at (523K) for two hours.
The optical studies revealed that the absorption coefficient (?) is fairly high. It is found that the electronic transitions in the fundamental absorption edge tend to be allowed direct transition. It was also found that the optical energy gap vary non-linearly with composition (x) and have a minimum value at x=0.5 and increases after heat treatment.
It is found that the optical constants vary non-linearly with composition, and the behavior inverse at x=0.5, and affected by heat treatment. The behavior of ?1 is similar to the behavior of n, while the behavior of ?2 is similar to the behavior of k. |
| first_indexed | 2024-12-12T22:12:13Z |
| format | Article |
| id | doaj.art-023ffa18e3ec40deb293b9145013ec44 |
| institution | Directory Open Access Journal |
| issn | 2078-8665 2411-7986 |
| language | Arabic |
| last_indexed | 2024-12-12T22:12:13Z |
| publishDate | 2011-03-01 |
| publisher | College of Science for Women, University of Baghdad |
| record_format | Article |
| series | Baghdad Science Journal |
| spelling | doaj.art-023ffa18e3ec40deb293b9145013ec442022-12-22T00:10:12ZaraCollege of Science for Women, University of BaghdadBaghdad Science Journal2078-86652411-79862011-03-018110.21123/bsj.8.1.123-133Optical Investigations of CdSe1-x Tex Thin FilmsBaghdad Science JournalThe alloys of CdSe1-xTex compound have been prepared from their elements successfully with high purity (99.9999%) which mixed stoichiometry ratio (x=0.0, 0.25, 0.5, 0.75 and 1.0) of (Cd, Se and Te) elements. Films of CdSe1-xTex alloys for different values of composition with thickness(0.5?m) have been prepared by thermal evaporation method at cleaned glass substrates which heated at (473K) under very low pressure (4×10-5mbar) at rate of deposition (3A?/s), after that thin films have been heat treated under low pressure (10-2mbar) at (523K) for two hours. The optical studies revealed that the absorption coefficient (?) is fairly high. It is found that the electronic transitions in the fundamental absorption edge tend to be allowed direct transition. It was also found that the optical energy gap vary non-linearly with composition (x) and have a minimum value at x=0.5 and increases after heat treatment. It is found that the optical constants vary non-linearly with composition, and the behavior inverse at x=0.5, and affected by heat treatment. The behavior of ?1 is similar to the behavior of n, while the behavior of ?2 is similar to the behavior of k.http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1144Chalcogenide glasses, thin films, Refractive index, Optical band gap. |
| spellingShingle | Baghdad Science Journal Optical Investigations of CdSe1-x Tex Thin Films Baghdad Science Journal Chalcogenide glasses, thin films, Refractive index, Optical band gap. |
| title | Optical Investigations of CdSe1-x Tex Thin Films |
| title_full | Optical Investigations of CdSe1-x Tex Thin Films |
| title_fullStr | Optical Investigations of CdSe1-x Tex Thin Films |
| title_full_unstemmed | Optical Investigations of CdSe1-x Tex Thin Films |
| title_short | Optical Investigations of CdSe1-x Tex Thin Films |
| title_sort | optical investigations of cdse1 x tex thin films |
| topic | Chalcogenide glasses, thin films, Refractive index, Optical band gap. |
| url | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/1144 |
| work_keys_str_mv | AT baghdadsciencejournal opticalinvestigationsofcdse1xtexthinfilms |