Flexible fast responding solar-blind photodetectors based on (TmGa)<subscript>2</subscript>O<subscript>3</subscript> films grown on mica.
In: Applied Physics Letters, Jg. 120 (2022-03-21), Heft 12, S. 1-7
Online
academicJournal
Zugriff:
As an ultra-wide bandgap semiconductor, gallium oxide (Ga2O3) holds great application potential in deep-ultraviolet (DUV) photodetectors. While the performance of photodetectors based on crystalline Ga2O3 thin films grown on hard substrates has been continuously improved, photodetectors based on amorphous Ga2O3 grown on less-stringent substrates in a more convenient and accessible way emerged as alternative technology and received increasing attention. Herein, we choose thulium (Tm) for doping and grow amorphous Tm-Ga2O3 films on non-lattice-matched flexible mica substrates. Thanks to the larger bandgap of Tm2O3 (∼6.5 eV) and stronger Tm–O bond, the (TmxGa1−x)2O3 films possess broadened bandgap and lessened oxygen vacancies compared to pure Ga2O3. Consequently, the photodetectors that were produced based on these amorphous (TmxGa1−x)2O3 films exhibit high performances with both low dark current and fast response speed (36.47 pA and 0.07 s at x = 0.05) and well maintain the performance after multiple cycles of bending at radius as small as 5 mm. This work sheds light on the development of flexible devices based on amorphous (TmxGa1−x)2O3 for solar-blind DUV detection. [ABSTRACT FROM AUTHOR]
Titel: |
Flexible fast responding solar-blind photodetectors based on (TmGa)<subscript>2</subscript>O<subscript>3</subscript> films grown on mica.
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Autor/in / Beteiligte Person: | Qu, Qiulin ; Liu, Qi ; Chen, Lufeng ; Li, Yingxiang ; Pan, Hang ; Chen, Jian ; Li, Mingkai ; Lu, Yinmei ; He, Yunbin |
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Zeitschrift: | Applied Physics Letters, Jg. 120 (2022-03-21), Heft 12, S. 1-7 |
Veröffentlichung: | 2022 |
Medientyp: | academicJournal |
ISSN: | 0003-6951 (print) |
DOI: | 10.1063/5.0088714 |
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