Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption
Two-dimensional (2D) materials-based photodetectors in the infrared range hold the key to enabling a wide range of optoelectronics applications including infrared imaging and optical communications. While there exist 2D materials with a narrow bandgap sensitive to infrared photons, a two-photon abso...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/164256 |
| _version_ | 1826111535443869696 |
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| author | Son, Bongkwon Wang, Yadong Luo, Manlin Lu, Kunze Kim, Youngmin Joo, Hyo-Jun Yi, Yu Wang, Chongwu Wang, Qi Jie Chae, Sang Hoon Nam, Donguk |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Son, Bongkwon Wang, Yadong Luo, Manlin Lu, Kunze Kim, Youngmin Joo, Hyo-Jun Yi, Yu Wang, Chongwu Wang, Qi Jie Chae, Sang Hoon Nam, Donguk |
| author_sort | Son, Bongkwon |
| collection | NTU |
| description | Two-dimensional (2D) materials-based photodetectors in the infrared range hold the key to enabling a wide range of optoelectronics applications including infrared imaging and optical communications. While there exist 2D materials with a narrow bandgap sensitive to infrared photons, a two-photon absorption (TPA) process can also enable infrared photodetection in well-established 2D materials with large bandgaps such as WSe2 and MoS2. However, most of the TPA photodetectors suffer from low responsivity, preventing this method from being widely adopted for infrared photodetection. Herein, we experimentally demonstrate 2D materials-based TPA avalanche photodiodes achieving an ultrahigh responsivity. The WSe2/MoS2 heterostructure absorbs infrared photons with an energy smaller than the material bandgaps via a low-efficiency TPA process. The significant avalanche effect with a gain of ∼1300 improves the responsivity, resulting in the record-high responsivity of 88 μA/W. We believe that this work paves the way toward building practical and high-efficiency 2D materials-based infrared photodetectors. |
| first_indexed | 2024-10-01T02:52:20Z |
| format | Journal Article |
| id | ntu-10356/164256 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:52:20Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1642562023-01-26T06:09:50Z Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption Son, Bongkwon Wang, Yadong Luo, Manlin Lu, Kunze Kim, Youngmin Joo, Hyo-Jun Yi, Yu Wang, Chongwu Wang, Qi Jie Chae, Sang Hoon Nam, Donguk School of Electrical and Electronic Engineering School of Materials Science and Engineering Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Infrared Photodetection 2D Materials Two-dimensional (2D) materials-based photodetectors in the infrared range hold the key to enabling a wide range of optoelectronics applications including infrared imaging and optical communications. While there exist 2D materials with a narrow bandgap sensitive to infrared photons, a two-photon absorption (TPA) process can also enable infrared photodetection in well-established 2D materials with large bandgaps such as WSe2 and MoS2. However, most of the TPA photodetectors suffer from low responsivity, preventing this method from being widely adopted for infrared photodetection. Herein, we experimentally demonstrate 2D materials-based TPA avalanche photodiodes achieving an ultrahigh responsivity. The WSe2/MoS2 heterostructure absorbs infrared photons with an energy smaller than the material bandgaps via a low-efficiency TPA process. The significant avalanche effect with a gain of ∼1300 improves the responsivity, resulting in the record-high responsivity of 88 μA/W. We believe that this work paves the way toward building practical and high-efficiency 2D materials-based infrared photodetectors. Ministry of Education (MOE) National Research Foundation (NRF) This work is supported by the Ministry of Education, Singapore, under Grant AcRF TIER 1 (RG 115/21)). This work is also supported by the Ministry of Education, Singapore, under Grant AcRF TIER 2 (MOE2018-T2-2-011 (S)). This work is also supported by the National Research Foundation of Singapore (Competitive Research Program (NRF-CRP19-2017-01)). This work is also supported by the National Research Foundation of Singapore (NRF-ANR Joint Grant (NRF2018-NRF-ANR009 TIGER)). This work is also supported by an iGrant of Singapore (A*STAR AME IRG (A2083c0053)). The authors acknowledge Donghoon Lee and Seok Woo Lee at Nanyang Technological University for the usage of the O2 plasma equipment. 2023-01-26T06:09:50Z 2023-01-26T06:09:50Z 2022 Journal Article Son, B., Wang, Y., Luo, M., Lu, K., Kim, Y., Joo, H., Yi, Y., Wang, C., Wang, Q. J., Chae, S. H. & Nam, D. (2022). Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption. Nano Letters, 22(23), 9516-9522. https://dx.doi.org/10.1021/acs.nanolett.2c03629 1530-6984 https://hdl.handle.net/10356/164256 10.1021/acs.nanolett.2c03629 36414380 2-s2.0-85142725409 23 22 9516 9522 en RG 115/21 MOE2018-T2-2-011 (S) NRF-CRP19- 2017-01 NRF2018-NRF-ANR009 TIGER A2083c0053 Nano Letters © 2022 American Chemical Society. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Infrared Photodetection 2D Materials Son, Bongkwon Wang, Yadong Luo, Manlin Lu, Kunze Kim, Youngmin Joo, Hyo-Jun Yi, Yu Wang, Chongwu Wang, Qi Jie Chae, Sang Hoon Nam, Donguk Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title | Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title_full | Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title_fullStr | Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title_full_unstemmed | Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title_short | Efficient avalanche photodiodes with a WSe₂/MoS₂ heterostructure via two-photon absorption |
| title_sort | efficient avalanche photodiodes with a wse₂ mos₂ heterostructure via two photon absorption |
| topic | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Infrared Photodetection 2D Materials |
| url | https://hdl.handle.net/10356/164256 |
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