Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3
Abstract High tunability of photoconductivity is highly desired for applications in optical memories, sensors, and bioelectronics. Recently, room temperature persistent photoconductivity (PPC) in SrTiO3 (STO) has been revealed and has attracted great attention. However, reversible switching of the P...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley-VCH
2023-07-01
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| Series: | Advanced Electronic Materials |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/aelm.202300068 |
| _version_ | 1797672132445995008 |
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| author | Tianyi Gao Leyan Nian Li Jin Haoying Sun Tingting Zhang Jiangfeng Yang Zhengbin Gu Luming Peng Yuefeng Nie |
| author_facet | Tianyi Gao Leyan Nian Li Jin Haoying Sun Tingting Zhang Jiangfeng Yang Zhengbin Gu Luming Peng Yuefeng Nie |
| author_sort | Tianyi Gao |
| collection | DOAJ |
| description | Abstract High tunability of photoconductivity is highly desired for applications in optical memories, sensors, and bioelectronics. Recently, room temperature persistent photoconductivity (PPC) in SrTiO3 (STO) has been revealed and has attracted great attention. However, reversible switching of the PPC in STO with a large on/off ratio remains challenging to date. Here, a giant switchable PPC in soft chemistry reduced STO is reported. An initial insulator‐to‐metal transition with on/off ratio up to 7 orders of magnitude is observed and about 5 orders of magnitude transition is found to be reversible. Via nuclear magnetic resonance measurements, it is uncovered that such unusual PPC is driven by the generation of excess carriers accompanied with a configuration evolution of the incorporated hydrogen from hydridic HO+ to protic Hi+ upon illumination. The work demonstrates giant switchable PPC transition in soft chemistry reduced perovskite oxides, providing a new platform for pursuing high performance sensors and nonvolatile optoelectronic memory devices. |
| first_indexed | 2024-03-11T21:25:42Z |
| format | Article |
| id | doaj.art-2b992a714099485f91562792996958c5 |
| institution | Directory Open Access Journal |
| issn | 2199-160X |
| language | English |
| last_indexed | 2024-03-11T21:25:42Z |
| publishDate | 2023-07-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj.art-2b992a714099485f91562792996958c52023-09-28T04:42:52ZengWiley-VCHAdvanced Electronic Materials2199-160X2023-07-0197n/an/a10.1002/aelm.202300068Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3Tianyi Gao0Leyan Nian1Li Jin2Haoying Sun3Tingting Zhang4Jiangfeng Yang5Zhengbin Gu6Luming Peng7Yuefeng Nie8National Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaKey Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaKey Laboratory of Mesoscopic Chemistry of MOE and Collaborative Innovation Center of Chemistry for Life Sciences School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. ChinaNational Laboratory of Solid State Microstructures Jiangsu Key Laboratory of Artificial Functional Materials College of Engineering and Applied Sciences Nanjing 210093 P. R. ChinaAbstract High tunability of photoconductivity is highly desired for applications in optical memories, sensors, and bioelectronics. Recently, room temperature persistent photoconductivity (PPC) in SrTiO3 (STO) has been revealed and has attracted great attention. However, reversible switching of the PPC in STO with a large on/off ratio remains challenging to date. Here, a giant switchable PPC in soft chemistry reduced STO is reported. An initial insulator‐to‐metal transition with on/off ratio up to 7 orders of magnitude is observed and about 5 orders of magnitude transition is found to be reversible. Via nuclear magnetic resonance measurements, it is uncovered that such unusual PPC is driven by the generation of excess carriers accompanied with a configuration evolution of the incorporated hydrogen from hydridic HO+ to protic Hi+ upon illumination. The work demonstrates giant switchable PPC transition in soft chemistry reduced perovskite oxides, providing a new platform for pursuing high performance sensors and nonvolatile optoelectronic memory devices.https://doi.org/10.1002/aelm.202300068hydrogen configurationperovskite oxidespersistent photoconductivityresistive switching |
| spellingShingle | Tianyi Gao Leyan Nian Li Jin Haoying Sun Tingting Zhang Jiangfeng Yang Zhengbin Gu Luming Peng Yuefeng Nie Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 Advanced Electronic Materials hydrogen configuration perovskite oxides persistent photoconductivity resistive switching |
| title | Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 |
| title_full | Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 |
| title_fullStr | Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 |
| title_full_unstemmed | Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 |
| title_short | Giant Switchable Persistent Photoconductivity in Soft Chemistry Reduced SrTiO3 |
| title_sort | giant switchable persistent photoconductivity in soft chemistry reduced srtio3 |
| topic | hydrogen configuration perovskite oxides persistent photoconductivity resistive switching |
| url | https://doi.org/10.1002/aelm.202300068 |
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