Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity
We report the fabrication of light-sensing thin-film transistors based on solution processed films of ZnO, as the channel material, functionalized with an organic dye as the light sensitizer. Due to the presence of the dye, the hybrid devices show exceptionally high photosensitivity to green light o...
| Автори: | , , , , , |
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| Формат: | Journal article |
| Мова: | English |
| Опубліковано: |
2012
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| _version_ | 1826301002697932800 |
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| author | Pattanasattayavong, P Rossbauer, S Thomas, S Labram, J Snaith, H Anthopoulos, T |
| author_facet | Pattanasattayavong, P Rossbauer, S Thomas, S Labram, J Snaith, H Anthopoulos, T |
| author_sort | Pattanasattayavong, P |
| collection | OXFORD |
| description | We report the fabrication of light-sensing thin-film transistors based on solution processed films of ZnO, as the channel material, functionalized with an organic dye as the light sensitizer. Due to the presence of the dye, the hybrid devices show exceptionally high photosensitivity to green light of 10 6 and a maximum photoresponsivity on the order of 10 4 A/W. The high performance is argued to be the result of the grain barrier limited nature of electron transport across the polycrystalline ZnO film and its dependence on charge carrier density upon illumination with green light. In addition to the excellent photoresponsivity and signal gain, the hybrid ZnO-dye photoactive layer exhibits high optical transparency. The unique combination of simple device fabrication and distinctive physical characteristics, such as optical transparency, renders the technology attractive for application in large-area transparent photodetectors. © 2012 American Institute of Physics. |
| first_indexed | 2024-03-07T05:25:46Z |
| format | Journal article |
| id | oxford-uuid:e07f66b9-291c-4635-9b64-be0ec5e30bfa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:25:46Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:e07f66b9-291c-4635-9b64-be0ec5e30bfa2022-03-27T09:47:38ZSolution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e07f66b9-291c-4635-9b64-be0ec5e30bfaEnglishSymplectic Elements at Oxford2012Pattanasattayavong, PRossbauer, SThomas, SLabram, JSnaith, HAnthopoulos, TWe report the fabrication of light-sensing thin-film transistors based on solution processed films of ZnO, as the channel material, functionalized with an organic dye as the light sensitizer. Due to the presence of the dye, the hybrid devices show exceptionally high photosensitivity to green light of 10 6 and a maximum photoresponsivity on the order of 10 4 A/W. The high performance is argued to be the result of the grain barrier limited nature of electron transport across the polycrystalline ZnO film and its dependence on charge carrier density upon illumination with green light. In addition to the excellent photoresponsivity and signal gain, the hybrid ZnO-dye photoactive layer exhibits high optical transparency. The unique combination of simple device fabrication and distinctive physical characteristics, such as optical transparency, renders the technology attractive for application in large-area transparent photodetectors. © 2012 American Institute of Physics. |
| spellingShingle | Pattanasattayavong, P Rossbauer, S Thomas, S Labram, J Snaith, H Anthopoulos, T Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title | Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title_full | Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title_fullStr | Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title_full_unstemmed | Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title_short | Solution-processed dye-sensitized ZnO phototransistors with extremely high photoresponsivity |
| title_sort | solution processed dye sensitized zno phototransistors with extremely high photoresponsivity |
| work_keys_str_mv | AT pattanasattayavongp solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity AT rossbauers solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity AT thomass solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity AT labramj solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity AT snaithh solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity AT anthopoulost solutionprocesseddyesensitizedznophototransistorswithextremelyhighphotoresponsivity |