Influence of titanium adhesion layer on performance of beta-Ga2O3 solar-blind photodetector
- Title
- Influence of titanium adhesion layer on performance of beta-Ga2O3 solar-blind photodetector
- Author
- 김은규
- Keywords
- β-Ga2O3; Solar-blind photodetector; Titanium adhesion layer; Pulsed laser deposition
- Issue Date
- 2020-06
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- MATERIALS CHEMISTRY AND PHYSICS, v. 252, article no. 123248
- Abstract
- The influence of a titanium (Ti) adhesion layer on the ductility of thin Au film well bonded with beta-Ga2O3 film on a flexible substrate were investigated with the quality of beta-Ga2O3 deep-ultraviolet photodetector. The photodetector fabricated with Ti adhesion layer exhibits excellent photoelectric performance and stability. The photocurrent obtained by the Ti/Au bilayer-device (3.1 x 10(-8) A) is significantly greater than that of an Au electrode-device (1.7 x 10(-8) A) at 10 V under a flat state. After 250 bending cycles, the photoresponsivity of the Au electrode-device declined approximately 20 times, while little photoresponsivity degradation was observed in the Ti/Au bilayer-device. Additionally, more suppression of the deformation and cracks was observed in the Au film with Ti adhesion layer than the Au grown directly on the beta-Ga2O3 films. These results reveal the importance of the adhesion layer in promoting the photodetector.
- URI
- https://www.sciencedirect.com/science/article/pii/S0254058420306180?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/168901
- ISSN
- 0254-0584; 1879-3312
- DOI
- 10.1016/j.matchemphys.2020.123248
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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