scholarly journals High-Performance β-Ga2O3-based Solar-Blind Photodetector with Ultralow Dark Current and Fast Photoresponse for Deep-Ultraviolet Communication

2021 ◽  
Author(s):  
Shuren Zhou ◽  
Xuan Peng ◽  
Haowen Liu ◽  
Zhengfeng Zhang ◽  
Lijuan Ye ◽  
...  
Keyword(s):  
Dark Current ◽  
High Performance ◽  
Solar Blind ◽  
Deep Ultraviolet ◽  
Ultraviolet Communication

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

Coatings ◽  
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.

Solar Blind (Al,Ga)N Metal-Semiconductor-Metal Devices for High Performance Flame Detection

2003 ◽  
Vol 764 ◽  
Author(s):  
Mauro Mosca ◽  
Jean-Luc Reverchon ◽  
Nicolas Grandjean ◽  
Franck Omnès ◽  
Jean-Yves Duboz ◽  
...  
Keyword(s):  
Dark Current ◽  
High Performance ◽  
Crack Density ◽  
Chemical Vapor ◽  
Cutoff Wavelength ◽  
Metal Semiconductor Metal ◽  
Solar Blind ◽  
New Process ◽  
Flame Detection ◽  
Level Process

AbstractIn this work we report on solar blind (Al,Ga)N photovoltaic metal-semiconductor-metal (MSM) detectors with a cutoff wavelength as short as ∼270 nm. (Al,Ga)N heterostructures, that allow backside illumination, were grown on sapphire substrates by both metalorganic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE). We observed that both the interdigitated electrodes and the contact areas contribute to the overall photocurrent. In order to avoid the parasitic current due to the contact pads, we developed a new process where the electrodes are deposited on the (Al,Ga)N surface whereas the contact pads are deposited on an insulator (dielectric) layer besides the electrodes. Some layers develop microcracks related to excess stress. In that case, we showed that both the dark current and the responsivity strongly depend on the crack density. By using our two-level process, we could reduce the parasitic effects of cracks on the dark current. Several dielectrics were tested and our results are reported; values of dark current < 10 fA have been measured at 10 V bias voltage. An extremely high performance can then be reached in these ultraviolet solar blind detectors.

High-Performance Solar-Blind Deep Ultraviolet Photodetector Based on Individual Single-Crystalline Zn2GeO4Nanowire

2015 ◽  
Vol 26 (5) ◽  
pp. 704-712 ◽  
Author(s):  
Xing Zhou ◽  
Qi Zhang ◽  
Lin Gan ◽  
Xin Li ◽  
Huiqiao Li ◽  
...  
Keyword(s):  
High Performance ◽  
Ultraviolet Photodetector ◽  
Single Crystalline ◽  
Solar Blind ◽  
Deep Ultraviolet

Monodispersed hierarchical ZnGa2O4 microflowers for self-powered solar-blind detection

2016 ◽  
Vol 4 (15) ◽  
pp. 3113-3118 ◽  
Author(s):  
Yue Teng ◽  
Le Xin Song ◽  
Wei Liu ◽  
Zhe Yuan Xu ◽  
Qing Shan Wang ◽  
...  
Keyword(s):  
Response Time ◽  
Bias Voltage ◽  
Dark Current ◽  
Blind Detection ◽  
Current Ratio ◽  
Zero Bias ◽  
Single Crystalline ◽  
Short Response Time ◽  
Solar Blind ◽  
Self Powered

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.

High Performance Solar Blind Detectors Based on AlGaN Grown by MBE on Si

2001 ◽  
Vol 188 (1) ◽  
pp. 325-328 ◽  
Author(s):  
J.-Y. Duboz ◽  
J.-L. Reverchon ◽  
D. Adam ◽  
B. Damilano ◽  
F. Semond ◽  
...  
Keyword(s):  
High Performance ◽  
Solar Blind
Sign in / Sign up

Export Citation Format

Share Document