High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires
A graphene photodetector decorated with Bi<sub>2</sub>Te<sub>3</sub> nanowires (NWs) with a high gain of up to 3 × 10<sup>4</sup> and wide bandwidth window (400–2200 nm) has been demonstrated. The photoconductive gain was improved by two orders of magnitude compar...
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MDPI AG
2021-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/3/755 |
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| author | Tae Jin Yoo Wan Sik Kim Kyoung Eun Chang Cihyun Kim Min Gyu Kwon Ji Young Jo Byoung Hun Lee |
| author_facet | Tae Jin Yoo Wan Sik Kim Kyoung Eun Chang Cihyun Kim Min Gyu Kwon Ji Young Jo Byoung Hun Lee |
| author_sort | Tae Jin Yoo |
| collection | DOAJ |
| description | A graphene photodetector decorated with Bi<sub>2</sub>Te<sub>3</sub> nanowires (NWs) with a high gain of up to 3 × 10<sup>4</sup> and wide bandwidth window (400–2200 nm) has been demonstrated. The photoconductive gain was improved by two orders of magnitude compared to the gain of a photodetector using a graphene/Bi<sub>2</sub>Te<sub>3</sub> nanoplate junction. Additionally, the position of photocurrent generation was investigated at the graphene/Bi<sub>2</sub>Te<sub>3</sub> NWs junction. Eventually, with low bandgap Bi<sub>2</sub>Te<sub>3</sub> NWs and a graphene junction, the photoresponsivity improved by 200% at 2200 nm (~0.09 mA/W). |
| first_indexed | 2024-03-10T13:08:44Z |
| format | Article |
| id | doaj.art-82310ba3892841478fa8ca873284bad8 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T13:08:44Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-82310ba3892841478fa8ca873284bad82023-11-21T10:54:43ZengMDPI AGNanomaterials2079-49912021-03-0111375510.3390/nano11030755High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> NanowiresTae Jin Yoo0Wan Sik Kim1Kyoung Eun Chang2Cihyun Kim3Min Gyu Kwon4Ji Young Jo5Byoung Hun Lee6Center for Semiconductor Technology Convergence, Department of Electrical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, KoreaSchool of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, KoreaSchool of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, KoreaCenter for Semiconductor Technology Convergence, Department of Electrical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, KoreaSchool of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, KoreaSchool of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, KoreaCenter for Semiconductor Technology Convergence, Department of Electrical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, KoreaA graphene photodetector decorated with Bi<sub>2</sub>Te<sub>3</sub> nanowires (NWs) with a high gain of up to 3 × 10<sup>4</sup> and wide bandwidth window (400–2200 nm) has been demonstrated. The photoconductive gain was improved by two orders of magnitude compared to the gain of a photodetector using a graphene/Bi<sub>2</sub>Te<sub>3</sub> nanoplate junction. Additionally, the position of photocurrent generation was investigated at the graphene/Bi<sub>2</sub>Te<sub>3</sub> NWs junction. Eventually, with low bandgap Bi<sub>2</sub>Te<sub>3</sub> NWs and a graphene junction, the photoresponsivity improved by 200% at 2200 nm (~0.09 mA/W).https://www.mdpi.com/2079-4991/11/3/755chemical vapor deposition (CVD) graphenephotodetectorBi<sub>2</sub>Te<sub>3</sub> nanowiresinfrared photodetectorgraphene photodetector |
| spellingShingle | Tae Jin Yoo Wan Sik Kim Kyoung Eun Chang Cihyun Kim Min Gyu Kwon Ji Young Jo Byoung Hun Lee High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires Nanomaterials chemical vapor deposition (CVD) graphene photodetector Bi<sub>2</sub>Te<sub>3</sub> nanowires infrared photodetector graphene photodetector |
| title | High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires |
| title_full | High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires |
| title_fullStr | High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires |
| title_full_unstemmed | High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires |
| title_short | High Gain and Broadband Absorption Graphene Photodetector Decorated with Bi<sub>2</sub>Te<sub>3</sub> Nanowires |
| title_sort | high gain and broadband absorption graphene photodetector decorated with bi sub 2 sub te sub 3 sub nanowires |
| topic | chemical vapor deposition (CVD) graphene photodetector Bi<sub>2</sub>Te<sub>3</sub> nanowires infrared photodetector graphene photodetector |
| url | https://www.mdpi.com/2079-4991/11/3/755 |
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