Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection
Abstract The photogating effect, induced by a light‐driven gate voltage, modulates the potential energy of the active channel in field‐effect transistors, leading to a high photoconductive gain of these devices. The effect is particularly pronounced in low‐dimensional structures, especially in graph...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2025-05-01
|
| Series: | Advanced Electronic Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aelm.202400716 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849328001320222720 |
|---|---|
| author | Leslie Howe Yifei Wang Kalani H. Ellepola Vinh X. Ho Rosalie L. Dohmen Marlo M. Pinto Wouter D. Hoff Michael P. Cooney Nguyen Q. Vinh |
| author_facet | Leslie Howe Yifei Wang Kalani H. Ellepola Vinh X. Ho Rosalie L. Dohmen Marlo M. Pinto Wouter D. Hoff Michael P. Cooney Nguyen Q. Vinh |
| author_sort | Leslie Howe |
| collection | DOAJ |
| description | Abstract The photogating effect, induced by a light‐driven gate voltage, modulates the potential energy of the active channel in field‐effect transistors, leading to a high photoconductive gain of these devices. The effect is particularly pronounced in low‐dimensional structures, especially in graphene field‐effect transistors. Along with unusual optical and electrical properties, graphene with ultra‐high carrier mobility and a highly sensitive surface generates a strong photogating effect in the structure, making it an excellent element for detecting light‐sensitive biomolecules. In this work, graphene field‐effect transistor biosensors is demonstrated for the rapid detection of photoactive yellow protein in an aqueous solution under optical illumination. The devices exhibit millisecond‐scale response times and achieve a detection limit below 5.8 fM under blue‐light excitation, consistent with the absorption characteristics of the protein. The photogating effect in graphene field‐effect transistors provides a promising approach for developing high‐performance, light‐sensitive biosensors for biomolecular detection applications. |
| format | Article |
| id | doaj-art-eb7c81ea1b06476ca74346626ca8d208 |
| institution | Kabale University |
| issn | 2199-160X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-eb7c81ea1b06476ca74346626ca8d2082025-08-20T03:47:41ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-05-01117n/an/a10.1002/aelm.202400716Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular DetectionLeslie Howe0Yifei Wang1Kalani H. Ellepola2Vinh X. Ho3Rosalie L. Dohmen4Marlo M. Pinto5Wouter D. Hoff6Michael P. Cooney7Nguyen Q. Vinh8Department of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USADepartment of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USADepartment of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USADepartment of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USADepartment of Microbiology and Molecular Genetics Oklahoma State University Stillwater OK 170404 USADepartment of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USADepartment of Microbiology and Molecular Genetics Oklahoma State University Stillwater OK 170404 USANASA Langley Research Center Hampton Virginia 23681 USADepartment of Physics and Center for Soft Matter and Biological Physics Virginia Tech Blacksburg VA 24061 USAAbstract The photogating effect, induced by a light‐driven gate voltage, modulates the potential energy of the active channel in field‐effect transistors, leading to a high photoconductive gain of these devices. The effect is particularly pronounced in low‐dimensional structures, especially in graphene field‐effect transistors. Along with unusual optical and electrical properties, graphene with ultra‐high carrier mobility and a highly sensitive surface generates a strong photogating effect in the structure, making it an excellent element for detecting light‐sensitive biomolecules. In this work, graphene field‐effect transistor biosensors is demonstrated for the rapid detection of photoactive yellow protein in an aqueous solution under optical illumination. The devices exhibit millisecond‐scale response times and achieve a detection limit below 5.8 fM under blue‐light excitation, consistent with the absorption characteristics of the protein. The photogating effect in graphene field‐effect transistors provides a promising approach for developing high‐performance, light‐sensitive biosensors for biomolecular detection applications.https://doi.org/10.1002/aelm.202400716biosensorsfield‐effect transistorgraphenephotoactive yellow proteinphotogating effect |
| spellingShingle | Leslie Howe Yifei Wang Kalani H. Ellepola Vinh X. Ho Rosalie L. Dohmen Marlo M. Pinto Wouter D. Hoff Michael P. Cooney Nguyen Q. Vinh Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection Advanced Electronic Materials biosensors field‐effect transistor graphene photoactive yellow protein photogating effect |
| title | Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection |
| title_full | Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection |
| title_fullStr | Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection |
| title_full_unstemmed | Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection |
| title_short | Interfacial Photogating of Graphene Field‐Effect Transistor for Photosensory Biomolecular Detection |
| title_sort | interfacial photogating of graphene field effect transistor for photosensory biomolecular detection |
| topic | biosensors field‐effect transistor graphene photoactive yellow protein photogating effect |
| url | https://doi.org/10.1002/aelm.202400716 |
| work_keys_str_mv | AT lesliehowe interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT yifeiwang interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT kalanihellepola interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT vinhxho interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT rosalieldohmen interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT marlompinto interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT wouterdhoff interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT michaelpcooney interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection AT nguyenqvinh interfacialphotogatingofgraphenefieldeffecttransistorforphotosensorybiomoleculardetection |