Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties
Nanocrystalline CdS thin films were grown on silicon substrates using microwave-assisted chemical bath deposition. Aqueous solutions of cadmium chloride (CdCl2) and thiourea [SC(NH2)2], which served as cadmium Cd2+ and sulfur S2– ions sources, respectively were used to synthesize the nanocrystalline...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Scientific Publishers
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/72392/1/Effect%20of%20deposition%20time%20on%20the%20characteristics%20of%20nanocrystalline%20cds%20thin%20films%20and%20photodetection%20properties.pdf |
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| author | Husham, Mohammed Hamidon, Mohd Nizar Hassan, Zainuriah Ahmad, Ahmad Fahad Al-Dulaimi, Ahmed A. |
| author_facet | Husham, Mohammed Hamidon, Mohd Nizar Hassan, Zainuriah Ahmad, Ahmad Fahad Al-Dulaimi, Ahmed A. |
| author_sort | Husham, Mohammed |
| collection | UPM |
| description | Nanocrystalline CdS thin films were grown on silicon substrates using microwave-assisted chemical bath deposition. Aqueous solutions of cadmium chloride (CdCl2) and thiourea [SC(NH2)2], which served as cadmium Cd2+ and sulfur S2– ions sources, respectively were used to synthesize the nanocrystalline CdS thin films. Morphological, structural, and optical analyses revealed that the deposition time have significantly influenced the properties of the prepared thin films. CdS thin film prepared at a deposition time of 20 min showed the optimum characteristics. The photoluminescence measurements showed enhanced structural quality as suggested by the reduction in the intensity of the defect-related emissions. Prolonging the deposition time beyond 20 min does not improve the properties of the grown thin films. Metal-semiconductor-metal photodetectors were fabricated based on the synthesized CdS thin films. Current–voltage measurements showed superior characteristics of the fabricated photodetectors based on CdS thin films grown at deposition times of 10 and 20 min compared to those based on CdS thin film grown at a deposition time of 30 min. Photodetector based on CdS thin film grown at a deposition time of 20 min exhibited enhanced photodetection properties. The device showed the fastest response time of 9 ms with a photosensitivity of 1440% to 500 nm chopped light at an applied bias of –1 V. Whereas, photodetector based on CdS thin film grown at a deposition time of 30 min showed the longest response and recovery times of 35 and 42 ms, respectively with a photosensitivity of 51.70%. Photodetection measurements revealed that schottky contact based devices have a superior performance than those with ohmic contact-based devices. |
| first_indexed | 2024-03-06T10:09:06Z |
| format | Article |
| id | upm.eprints-72392 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T10:09:06Z |
| publishDate | 2018 |
| publisher | American Scientific Publishers |
| record_format | dspace |
| spelling | upm.eprints-723922020-06-02T02:50:26Z http://psasir.upm.edu.my/id/eprint/72392/ Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties Husham, Mohammed Hamidon, Mohd Nizar Hassan, Zainuriah Ahmad, Ahmad Fahad Al-Dulaimi, Ahmed A. Nanocrystalline CdS thin films were grown on silicon substrates using microwave-assisted chemical bath deposition. Aqueous solutions of cadmium chloride (CdCl2) and thiourea [SC(NH2)2], which served as cadmium Cd2+ and sulfur S2– ions sources, respectively were used to synthesize the nanocrystalline CdS thin films. Morphological, structural, and optical analyses revealed that the deposition time have significantly influenced the properties of the prepared thin films. CdS thin film prepared at a deposition time of 20 min showed the optimum characteristics. The photoluminescence measurements showed enhanced structural quality as suggested by the reduction in the intensity of the defect-related emissions. Prolonging the deposition time beyond 20 min does not improve the properties of the grown thin films. Metal-semiconductor-metal photodetectors were fabricated based on the synthesized CdS thin films. Current–voltage measurements showed superior characteristics of the fabricated photodetectors based on CdS thin films grown at deposition times of 10 and 20 min compared to those based on CdS thin film grown at a deposition time of 30 min. Photodetector based on CdS thin film grown at a deposition time of 20 min exhibited enhanced photodetection properties. The device showed the fastest response time of 9 ms with a photosensitivity of 1440% to 500 nm chopped light at an applied bias of –1 V. Whereas, photodetector based on CdS thin film grown at a deposition time of 30 min showed the longest response and recovery times of 35 and 42 ms, respectively with a photosensitivity of 51.70%. Photodetection measurements revealed that schottky contact based devices have a superior performance than those with ohmic contact-based devices. American Scientific Publishers 2018-04 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/72392/1/Effect%20of%20deposition%20time%20on%20the%20characteristics%20of%20nanocrystalline%20cds%20thin%20films%20and%20photodetection%20properties.pdf Husham, Mohammed and Hamidon, Mohd Nizar and Hassan, Zainuriah and Ahmad, Ahmad Fahad and Al-Dulaimi, Ahmed A. (2018) Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties. Journal of Nanoelectronics and Optoelectronics, 13 (4). 484 - 492. ISSN 1555-130X; ESSN: 1555-1318) https://www.ingentaconnect.com/contentone/asp/jno/2018/00000013/00000004/art00007?crawler=true&mimetype=application/pdf 10.1166/jno.2018.2117 |
| spellingShingle | Husham, Mohammed Hamidon, Mohd Nizar Hassan, Zainuriah Ahmad, Ahmad Fahad Al-Dulaimi, Ahmed A. Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title | Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title_full | Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title_fullStr | Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title_full_unstemmed | Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title_short | Effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| title_sort | effect of deposition time on the characteristics of nanocrystalline cds thin films and photodetection properties |
| url | http://psasir.upm.edu.my/id/eprint/72392/1/Effect%20of%20deposition%20time%20on%20the%20characteristics%20of%20nanocrystalline%20cds%20thin%20films%20and%20photodetection%20properties.pdf |
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