Flexible Solar-Blind Ga2O3 Ultraviolet Photodetectors With High Responsivity and Photo-to-Dark Current Ratio

We successfully synthesized ZnGa2O4 microflowers self-assembled by hexagonal single-crystalline nanopetals. The ZnGa2O4 crystal exhibits improved solar-blind detection performance such as short response time, large light to dark current ratio and high photocurrent stability under zero bias voltage.

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A Ga2O3/AlN heterojunction for self-powered solar-blind photodetection with high photo-to-dark current ratio and fast response speed

Physica Scripta ◽

10.1088/1402-4896/ac2d8a ◽

2021 ◽

Author(s):

Yuhua Hao ◽

Xia Wang ◽

Yuehua An

Keyword(s):

Dark Current ◽

Response Speed ◽

Fast Response ◽

Current Ratio ◽

Solar Blind ◽

Self Powered

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High Responsivity, Low Dark Current Ultraviolet Photodetectors Based on Two-Dimensional Electron Gas Interdigitated Transducers

ACS Photonics ◽

10.1021/acsphotonics.8b01169 ◽

2018 ◽

Vol 5 (11) ◽

pp. 4277-4282 ◽

Cited By ~ 17

Author(s):

Peter F. Satterthwaite ◽

Ananth Saran Yalamarthy ◽

Noah A. Scandrette ◽

A. K. M. Newaz ◽

Debbie G. Senesky

Keyword(s):

Dark Current ◽

Electron Gas ◽

Two Dimensional ◽

Dimensional Electron ◽

Two Dimensional Electron Gas ◽

High Responsivity ◽

Dimensional Electron Gas ◽

Ultraviolet Photodetectors

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Enhancement-Mode $\beta$ -Ga2O3 Metal–Oxide–Semiconductor Field-Effect Solar-Blind Phototransistor With Ultrahigh Detectivity and Photo-to-Dark Current Ratio

IEEE Electron Device Letters ◽

10.1109/led.2019.2908948 ◽

2019 ◽

Vol 40 (5) ◽

pp. 742-745 ◽

Cited By ~ 11

Author(s):

Yuan Qin ◽

Hang Dong ◽

Shibing Long ◽

Qiming He ◽

Guangzhong Jian ◽

...

Keyword(s):

Metal Oxide ◽

Dark Current ◽

Field Effect ◽

Metal Oxide Semiconductor ◽

Oxide Semiconductor ◽

Current Ratio ◽

Enhancement Mode ◽

Solar Blind

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Solar-Blind Photodetector Based on NaTaO3/TiO2 Composite Film with Enhanced Photoelectric Performance

Coatings ◽

10.3390/coatings11101178 ◽

2021 ◽

Vol 11 (10) ◽

pp. 1178

Author(s):

Min Zhang ◽

Zhenjiang Li ◽

Yunfei Zhao ◽

Zhaofeng Wu ◽

Jun Zhang ◽

...

Keyword(s):

Response Time ◽

Dark Current ◽

High Performance ◽

Uv Light ◽

Fast Response ◽

Current Ratio ◽

Coated Glass Substrate ◽

Ultraviolet Detectors ◽

Photoelectric Performance ◽

Solar Blind

In this study, ultraviolet detectors based on NaTaO3/TiO2 were fabricated with enhanced detection performance towards solar-blind (200–280 nm) light. A TiO2 seed layer was introduced and served as a buffer layer between the fluorine tin oxide (FTO)-coated glass substrate and the TiO2 film, which increased the adhesion between them. The periodic stability and photoelectric characteristics of the detectors were studied and analyzed. The detectors showed a high performance when illuminated by 265 nm and 254 nm UV light. At −15 V bias, the dark current of the detector was only 70 pA. Under the bias of −15 V and the illumination of 254 nm, the maximum photo-to-dark current ratio reached 20, and the response time was less than 300 ms. Moreover, the detector exhibited a fast response time and remained very stable after numerous testing cycles. These results demonstrate the potential application of NaTaO3/TiO2 composites in UV detection.

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