CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor
CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> perovskite thin film is used as a guided-wave layer and coated on the surface of an Au film to form the Au-perovskite hybrid structure. Using the hybrid structure, a perovskite-based guided-wave surface plasmon resonanc...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-10-01
|
| Series: | Biosensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2079-6374/11/11/415 |
| _version_ | 1797511096686346240 |
|---|---|
| author | Leiming Wu Yuanjiang Xiang Yuwen Qin |
| author_facet | Leiming Wu Yuanjiang Xiang Yuwen Qin |
| author_sort | Leiming Wu |
| collection | DOAJ |
| description | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> perovskite thin film is used as a guided-wave layer and coated on the surface of an Au film to form the Au-perovskite hybrid structure. Using the hybrid structure, a perovskite-based guided-wave surface plasmon resonance (GWSPR) biosensor is proposed with high angular sensitivity. First, it is found that the electric field at the sensing interface is improved by the CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> perovskite thin film, thereby enhancing the sensitivity. The result demonstrates that the angular sensitivity of the Au-perovskite-based GWSPR biosensor is as high as 278.5°/RIU, which is 110.2% higher than that of a conventional Au-based surface plasmon resonance (SPR) biosensor. Second, the selection of the coupling prism in the configuration of the GWSPR biosensor is also analyzed, and it indicates that a low refractive index (RI) prism can generate greater sensitivity. Therefore, the low-RI BK7 prism is served as the coupling prism for the proposed GWSPR biosensor. Finally, the proposed GWSPR sensing structure can not only be used for liquid sensing, but also for gas sensing, and it has also been demonstrated that the GWSPR gas sensor is 2.8 times more sensitive than the Au-based SPR gas sensor. |
| first_indexed | 2024-03-10T05:40:35Z |
| format | Article |
| id | doaj.art-bf8c83cac5394c719fd42740e8a3c36b |
| institution | Directory Open Access Journal |
| issn | 2079-6374 |
| language | English |
| last_indexed | 2024-03-10T05:40:35Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biosensors |
| spelling | doaj.art-bf8c83cac5394c719fd42740e8a3c36b2023-11-22T22:35:48ZengMDPI AGBiosensors2079-63742021-10-01111141510.3390/bios11110415CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon BiosensorLeiming Wu0Yuanjiang Xiang1Yuwen Qin2Advanced Institute of Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Physics and Electronics, Hunan University, Changsha 410082, ChinaAdvanced Institute of Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaCH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> perovskite thin film is used as a guided-wave layer and coated on the surface of an Au film to form the Au-perovskite hybrid structure. Using the hybrid structure, a perovskite-based guided-wave surface plasmon resonance (GWSPR) biosensor is proposed with high angular sensitivity. First, it is found that the electric field at the sensing interface is improved by the CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> perovskite thin film, thereby enhancing the sensitivity. The result demonstrates that the angular sensitivity of the Au-perovskite-based GWSPR biosensor is as high as 278.5°/RIU, which is 110.2% higher than that of a conventional Au-based surface plasmon resonance (SPR) biosensor. Second, the selection of the coupling prism in the configuration of the GWSPR biosensor is also analyzed, and it indicates that a low refractive index (RI) prism can generate greater sensitivity. Therefore, the low-RI BK7 prism is served as the coupling prism for the proposed GWSPR biosensor. Finally, the proposed GWSPR sensing structure can not only be used for liquid sensing, but also for gas sensing, and it has also been demonstrated that the GWSPR gas sensor is 2.8 times more sensitive than the Au-based SPR gas sensor.https://www.mdpi.com/2079-6374/11/11/415guided-wave surface plasmon resonanceAu–perovskite hybrid structurebiosensor |
| spellingShingle | Leiming Wu Yuanjiang Xiang Yuwen Qin CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor Biosensors guided-wave surface plasmon resonance Au–perovskite hybrid structure biosensor |
| title | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor |
| title_full | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor |
| title_fullStr | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor |
| title_full_unstemmed | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor |
| title_short | CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor |
| title_sort | ch sub 3 sub nh sub 3 sub pbbr sub 3 sub thin film served as guided wave layer for enhancing the angular sensitivity of plasmon biosensor |
| topic | guided-wave surface plasmon resonance Au–perovskite hybrid structure biosensor |
| url | https://www.mdpi.com/2079-6374/11/11/415 |
| work_keys_str_mv | AT leimingwu chsub3subnhsub3subpbbrsub3subthinfilmservedasguidedwavelayerforenhancingtheangularsensitivityofplasmonbiosensor AT yuanjiangxiang chsub3subnhsub3subpbbrsub3subthinfilmservedasguidedwavelayerforenhancingtheangularsensitivityofplasmonbiosensor AT yuwenqin chsub3subnhsub3subpbbrsub3subthinfilmservedasguidedwavelayerforenhancingtheangularsensitivityofplasmonbiosensor |