Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection
Polarized light detection is consequential for optical communication and polarized light imaging. InSe is considered a promising candidate for narrow‐bandgap photodetector. However, monolayer γ‐InSe is an indirect bandgap semiconductor and is ignored for a long time for polarized light detection. In...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2022-12-01
|
| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202200119 |
| _version_ | 1811205620141916160 |
|---|---|
| author | Xusheng Wang Bo Wen Siyan Gao Xiaolin Li Zezhou Lin Luping Du Xi Zhang |
| author_facet | Xusheng Wang Bo Wen Siyan Gao Xiaolin Li Zezhou Lin Luping Du Xi Zhang |
| author_sort | Xusheng Wang |
| collection | DOAJ |
| description | Polarized light detection is consequential for optical communication and polarized light imaging. InSe is considered a promising candidate for narrow‐bandgap photodetector. However, monolayer γ‐InSe is an indirect bandgap semiconductor and is ignored for a long time for polarized light detection. In this work, by virtue of the indirect–direct conversation and the surface‐bound excitons, the intrinsic anisotropy of multilayer γ‐InSe is revealed by the photoluminescence (PL) measurement under polarized light. Due to the anisotropy of surface‐bound exaction and in‐plane exciton, there are significant differences in the photocurrent under irradiation of laser with different polarization angles. The γ‐InSe‐based photodetector exhibits considerable polarization‐dependent photocurrent with an outstanding anisotropic ratio of 2.7. Moreover, the multilayer γ‐InSe photodetector shows high responsivity of 7.47 A W−1 and specific detectivity of 4.56 × 1013 Jones under 785 nm laser. Based on the InSe polarization photodetector, a polarization division multiplexing that can simultaneously process four information tracks and enhance the communication speed by 24 is explored. The multilayer InSe polarization photodetector proposed in this work broadens a new path for polarized light detection, and brings a potential solution to the field of optical communications. |
| first_indexed | 2024-04-12T03:35:10Z |
| format | Article |
| id | doaj.art-10f5a9820e33406182b0e59ba4f7b172 |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-12T03:35:10Z |
| publishDate | 2022-12-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-10f5a9820e33406182b0e59ba4f7b1722022-12-22T03:49:27ZengWiley-VCHAdvanced Photonics Research2699-92932022-12-01312n/an/a10.1002/adpr.202200119Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing PhotodetectionXusheng Wang0Bo Wen1Siyan Gao2Xiaolin Li3Zezhou Lin4Luping Du5Xi Zhang6Institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen University Shenzhen 518060 ChinaInstitute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen University Shenzhen 518060 ChinaInstitute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen University Shenzhen 518060 ChinaInstitute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen University Shenzhen 518060 ChinaDepartment of Applied Physics and Research Institute for Smart Energy The Hong Kong Polytechnic University Hong Kong SAR 999077 ChinaNanophotonics Research Centre Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 ChinaInstitute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering Shenzhen University Shenzhen 518060 ChinaPolarized light detection is consequential for optical communication and polarized light imaging. InSe is considered a promising candidate for narrow‐bandgap photodetector. However, monolayer γ‐InSe is an indirect bandgap semiconductor and is ignored for a long time for polarized light detection. In this work, by virtue of the indirect–direct conversation and the surface‐bound excitons, the intrinsic anisotropy of multilayer γ‐InSe is revealed by the photoluminescence (PL) measurement under polarized light. Due to the anisotropy of surface‐bound exaction and in‐plane exciton, there are significant differences in the photocurrent under irradiation of laser with different polarization angles. The γ‐InSe‐based photodetector exhibits considerable polarization‐dependent photocurrent with an outstanding anisotropic ratio of 2.7. Moreover, the multilayer γ‐InSe photodetector shows high responsivity of 7.47 A W−1 and specific detectivity of 4.56 × 1013 Jones under 785 nm laser. Based on the InSe polarization photodetector, a polarization division multiplexing that can simultaneously process four information tracks and enhance the communication speed by 24 is explored. The multilayer InSe polarization photodetector proposed in this work broadens a new path for polarized light detection, and brings a potential solution to the field of optical communications.https://doi.org/10.1002/adpr.202200119anisotropic photoluminescence (PL) spectrummultilayer γ-InSepolarization detectionpolarization-dependent photocurrent |
| spellingShingle | Xusheng Wang Bo Wen Siyan Gao Xiaolin Li Zezhou Lin Luping Du Xi Zhang Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection Advanced Photonics Research anisotropic photoluminescence (PL) spectrum multilayer γ-InSe polarization detection polarization-dependent photocurrent |
| title | Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection |
| title_full | Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection |
| title_fullStr | Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection |
| title_full_unstemmed | Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection |
| title_short | Strong Anisotropy of Multilayer γ‐InSe‐Enabled Polarization Division Multiplexing Photodetection |
| title_sort | strong anisotropy of multilayer γ inse enabled polarization division multiplexing photodetection |
| topic | anisotropic photoluminescence (PL) spectrum multilayer γ-InSe polarization detection polarization-dependent photocurrent |
| url | https://doi.org/10.1002/adpr.202200119 |
| work_keys_str_mv | AT xushengwang stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT bowen stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT siyangao stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT xiaolinli stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT zezhoulin stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT lupingdu stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection AT xizhang stronganisotropyofmultilayerginseenabledpolarizationdivisionmultiplexingphotodetection |