Laser induced white emission and photocurrent of GaN nanoceramics
Abstract The measurements of the optical properties of GaN nanoceramics are reported. In particular, the laser induced white emission (LIWE) and photocurrent (LIPC) were investigated. LIWE and LIPC was measured in closed cycles: forward, with increasing excitation power density, and backward, with d...
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Nature Portfolio
2025-08-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-14109-6 |
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| author | A. Musiałek R. Tomala M. Stefanski X. Liu J. Qiu W. Strek |
| author_facet | A. Musiałek R. Tomala M. Stefanski X. Liu J. Qiu W. Strek |
| author_sort | A. Musiałek |
| collection | DOAJ |
| description | Abstract The measurements of the optical properties of GaN nanoceramics are reported. In particular, the laser induced white emission (LIWE) and photocurrent (LIPC) were investigated. LIWE and LIPC was measured in closed cycles: forward, with increasing excitation power density, and backward, with decreasing excitation power density, with hysteresis occurring. The photoconductivity of the obtained nanoceramics was measured at different voltage biases, demonstrating a decrease in initial resistance with applied voltage until saturation was reached, after which no further change occurred at higher voltages. The phenomena are related to charge carrier (electrons) generation via cascade multiphoton ionization and exhibit excitation threshold dependence and non-linear behavior. Simultaneous measurements strongly highlight the connection between both processes. The occurrence of hysteresis suggests potential applications in artificial lighting and/or optical memory devices. |
| format | Article |
| id | doaj-art-f6f73ee680e74e0688c6e558dcf6ffe7 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-f6f73ee680e74e0688c6e558dcf6ffe72025-08-20T04:02:46ZengNature PortfolioScientific Reports2045-23222025-08-011511810.1038/s41598-025-14109-6Laser induced white emission and photocurrent of GaN nanoceramicsA. Musiałek0R. Tomala1M. Stefanski2X. Liu3J. Qiu4W. Strek5Institute of Low Temperature and Structure Research, Polish Academy of SciencesInstitute of Low Temperature and Structure Research, Polish Academy of SciencesInstitute of Low Temperature and Structure Research, Polish Academy of SciencesState Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang UniversitySchool of Materials Science and Engineering, Zhejiang UniversityInstitute of Low Temperature and Structure Research, Polish Academy of SciencesAbstract The measurements of the optical properties of GaN nanoceramics are reported. In particular, the laser induced white emission (LIWE) and photocurrent (LIPC) were investigated. LIWE and LIPC was measured in closed cycles: forward, with increasing excitation power density, and backward, with decreasing excitation power density, with hysteresis occurring. The photoconductivity of the obtained nanoceramics was measured at different voltage biases, demonstrating a decrease in initial resistance with applied voltage until saturation was reached, after which no further change occurred at higher voltages. The phenomena are related to charge carrier (electrons) generation via cascade multiphoton ionization and exhibit excitation threshold dependence and non-linear behavior. Simultaneous measurements strongly highlight the connection between both processes. The occurrence of hysteresis suggests potential applications in artificial lighting and/or optical memory devices.https://doi.org/10.1038/s41598-025-14109-6GaNNanoceramicsWhite emissionPhotocurrentHysteresis loops |
| spellingShingle | A. Musiałek R. Tomala M. Stefanski X. Liu J. Qiu W. Strek Laser induced white emission and photocurrent of GaN nanoceramics Scientific Reports GaN Nanoceramics White emission Photocurrent Hysteresis loops |
| title | Laser induced white emission and photocurrent of GaN nanoceramics |
| title_full | Laser induced white emission and photocurrent of GaN nanoceramics |
| title_fullStr | Laser induced white emission and photocurrent of GaN nanoceramics |
| title_full_unstemmed | Laser induced white emission and photocurrent of GaN nanoceramics |
| title_short | Laser induced white emission and photocurrent of GaN nanoceramics |
| title_sort | laser induced white emission and photocurrent of gan nanoceramics |
| topic | GaN Nanoceramics White emission Photocurrent Hysteresis loops |
| url | https://doi.org/10.1038/s41598-025-14109-6 |
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