| Autor: |
Shubham Mondal, Ding Wang, Ping Wang, Yuanpeng Wu, Mingtao Hu, Yixin Xiao, Subhajit Mohanty, Tao Ma, Elaheh Ahmadi, Zetian Mi |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
APL Materials, Vol 10, Iss 12, Pp 121101-121101-8 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2166-532X |
| DOI: |
10.1063/5.0122943 |
| Popis: |
The efficient photoelectric conversion based on the ferroelectric property of a material has attracted widespread attention in advanced optoelectronic systems. Such an electrically reconfigurable photovoltaic effect offers a unique opportunity for the development of self-powered ultraviolet (UV) photodetectors for a broad range of applications from the military to human health and the environment. To date, however, the low performance metrics of such photodetectors have hindered their integration with existing platforms. By exploring the unique optoelectronic properties of an ultrawide bandgap nitride ferroelectric (ScAlN), we demonstrate, for the first time, polarization dependent high-performance self-powered deep UV photodetectors. The responsivity at 193 nm illumination reached up to a maximum of 15 mA/W with a detectivity of 1.2 × 1011 Jones at an extremely low illumination intensity of 0.12 mW/cm2. Furthermore, the photodetectors exhibit wake-up free and reconfigurable photo-response, and fast and stable switching response time ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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