Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect
<p>Abstract</p> <p>Pt/ZnO nanorod (NR) and Pt/modified ZnO NR Schottky barrier ultraviolet (UV) photodetectors (PDs) were prepared with different seed layers and metal oxide modifying layer materials. In this paper, we discussed the effect of metal oxide modifying layer on the perf...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/147 |
| _version_ | 1797720339164168192 |
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| author | Zhou Hai Fang Guojia Liu Nishuang Zhao Xingzhong |
| author_facet | Zhou Hai Fang Guojia Liu Nishuang Zhao Xingzhong |
| author_sort | Zhou Hai |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Pt/ZnO nanorod (NR) and Pt/modified ZnO NR Schottky barrier ultraviolet (UV) photodetectors (PDs) were prepared with different seed layers and metal oxide modifying layer materials. In this paper, we discussed the effect of metal oxide modifying layer on the performance of UV PDs pre- and post-deposition annealing at 300°C, respectively. For Schottky barrier UV PDs with different seed layers, the MgZnO seed layer-PDs without metal oxide coating showed bigger responsivity and larger detectivity (<it>D</it><sub>λ</sub>*) than those of PDs with ZnO seed layer, and the reason was illustrated through energy band theory and the electron transport mechanism. Also the ratio of <it>D</it><sub>254</sub>* to <it>D</it><sub>546</sub>* was calculated above 8 × 10<sup>2 </sup>for all PDs, which demonstrated that our PDs showed high selectivity for detecting UV light with less influence of light with long wavelength.</p> |
| first_indexed | 2024-03-12T09:19:03Z |
| format | Article |
| id | doaj.art-5b8ac30e5da74c639ec30db749575724 |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T09:19:03Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-5b8ac30e5da74c639ec30db7495757242023-09-02T14:38:54ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161147Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effectZhou HaiFang GuojiaLiu NishuangZhao Xingzhong<p>Abstract</p> <p>Pt/ZnO nanorod (NR) and Pt/modified ZnO NR Schottky barrier ultraviolet (UV) photodetectors (PDs) were prepared with different seed layers and metal oxide modifying layer materials. In this paper, we discussed the effect of metal oxide modifying layer on the performance of UV PDs pre- and post-deposition annealing at 300°C, respectively. For Schottky barrier UV PDs with different seed layers, the MgZnO seed layer-PDs without metal oxide coating showed bigger responsivity and larger detectivity (<it>D</it><sub>λ</sub>*) than those of PDs with ZnO seed layer, and the reason was illustrated through energy band theory and the electron transport mechanism. Also the ratio of <it>D</it><sub>254</sub>* to <it>D</it><sub>546</sub>* was calculated above 8 × 10<sup>2 </sup>for all PDs, which demonstrated that our PDs showed high selectivity for detecting UV light with less influence of light with long wavelength.</p>http://www.nanoscalereslett.com/content/6/1/147 |
| spellingShingle | Zhou Hai Fang Guojia Liu Nishuang Zhao Xingzhong Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect Nanoscale Research Letters |
| title | Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect |
| title_full | Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect |
| title_fullStr | Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect |
| title_full_unstemmed | Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect |
| title_short | Ultraviolet photodetectors based on ZnO nanorods-seed layer effect and metal oxide modifying layer effect |
| title_sort | ultraviolet photodetectors based on zno nanorods seed layer effect and metal oxide modifying layer effect |
| url | http://www.nanoscalereslett.com/content/6/1/147 |
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