Realization of cubic ZnMgO photodetectors for UVB applications

2015 ◽  
Vol 3 (2) ◽  
pp. 313-317 ◽  
Author(s):  
Ming-Ming Fan ◽  
Ke-Wei Liu ◽  
Xing Chen ◽  
Zhen-Zhong Zhang ◽  
Bing-Hui Li ◽  
...  
Keyword(s):  
Dark Current ◽  
Response Speed ◽  
Fast Response ◽  
Practical Applications ◽  
High Responsivity

Cubic ZnMgO UVB photodetectors with low dark current, high responsivity and fast response speed are very promising for practical applications.

Photovoltaic Three-Dimensional Diamond UV Photodetector With Low Dark Current and Fast Response Speed Fabricated by Bottom-Up Method

2019 ◽  
Vol 40 (7) ◽  
pp. 1186-1189 ◽  
Author(s):  
Zhangcheng Liu ◽  
Dan Zhao ◽  
Tai Min ◽  
Juan Wang ◽  
Genqiang Chen ◽  
...  
Keyword(s):  
Dark Current ◽  
Three Dimensional ◽  
Response Speed ◽  
Fast Response ◽  
Uv Photodetector ◽  
Bottom Up

scholarly journals Suspended few-layered GaS photodetector with high responsivity and fast response speed

2021 ◽  
pp. 110233
Author(s):  
Weiheng Zhong ◽  
Yuqing Liu ◽  
Xuhui Yang ◽  
Cong Wang ◽  
Wei Xin ◽  
...  
Keyword(s):  
Response Speed ◽  
Fast Response ◽  
High Responsivity

scholarly journals Solar-blind deep-ultraviolet photodetectors based on solution-synthesized quasi-2D Te nanosheets

Nanophotonics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 2459-2466 ◽  
Author(s):  
Rui Cao ◽  
Ye Zhang ◽  
Huide Wang ◽  
Yonghong Zeng ◽  
Jinlai Zhao ◽  
...  
Keyword(s):  
Response Speed ◽  
Fast Response ◽  
Pollution Monitoring ◽  
Practical Applications ◽  
Ambient Exposure ◽  
Photoelectric Properties ◽  
Solar Blind ◽  
Deep Ultraviolet ◽  
Viable Approach ◽  
Ultraviolet Photodetectors

AbstractSolar-blind deep ultraviolet (DUV) photodetectors with high responsivity (R) and fast response speed are crucial for practical applications in astrophysical analysis, environmental pollution monitoring, and communication. Recently, 2D tellurium has emerged as a potential optoelectronic material because of its excellent photoelectric properties. In this study, solar-blind DUV photodetectors are demonstrated based on solution-synthesized and air-stable quasi-2D Te nanosheets (Te NSs). An R of 6.5 × 104 A/W at 261 nm and an external quantum efficiency (EQE) of higher than 2.26 × 106% were obtained, which are highest among most other 2D material-based solar-blind DUV photodetectors. Moreover, the photoelectric performance of the quasi-2D Te-based photodetector exhibited good stability even after ambient exposure for 90 days without any encapsulation. These results indicate that quasi-2D Te NSs provide a viable approach for developing solar-blind DUV photodetectors with ultrahigh R and EQE.

Ideal PN photodiode using doping controlled WSe2–MoSe2 lateral heterostructure

2021 ◽  
Vol 9 (10) ◽  
pp. 3504-3512
Author(s):  
Ji Eun Kim ◽  
Won Tae Kang ◽  
Van Tu Vu ◽  
Young Rae Kim ◽  
Yong Seon Shin ◽  
...  
Keyword(s):  
Response Speed ◽  
Fast Response ◽  
Atomic Scale ◽  
Two Dimensional ◽  
Contact Interface ◽  
High Responsivity ◽  
Tight Contact ◽  
Specific Detectivity ◽  
Silicon Based ◽  
Lateral Heterostructure

As the tight contact interface of the lateral PN junction enables high responsivity, specific detectivity, and fast response speed, atomic-scale two-dimensional (2D) lateral PN heterostructures are emerging as viable alternatives to silicon-based photodiodes.

Small-diameter p-type SnS nanowire photodetectors and phototransistors with low-noise and high-performance

2021 ◽  
Author(s):  
Ruoling Chen ◽  
Long Li ◽  
Long Jiang ◽  
Xiangxiang Yu ◽  
Desheng Zhu ◽  
...  
Keyword(s):  
Low Power ◽  
Dark Current ◽  
High Performance ◽  
Wide Spectrum ◽  
Small Diameter ◽  
High Sensitivity ◽  
Response Speed ◽  
Fast Response ◽  
Low Noise ◽  
P Type

Abstract P-type nanostructured photodetectors and phototransistors have been widely used in the field of photodetection due to their excellent electrical and optoelectronic characteristics. However, the large dark current of p-type photodetectors will limit the detectivity. Herein, we synthesized small-diameter single-crystalline p-type SnS nanowires (NWs) and then fabricated single SnS NW photodetectors and phototransistors. The device exhibits low noise and low dark current, and its noise current power is as low as 2.4 × 10−28 A2. Under 830 nm illumination and low power density of 0.12 mW cm2, the photoconductive gain, responsivity and detectivity of the photodetector are as high as 3.9 × 102, 2.6 × 102 A W−1 and 1.8 × 1013 Jones, respectively, at zero gate voltage. The rise and fall time of response are about 9.6 and 14 ms. The experimental results show that the small-diameter p-type SnS NWs have broad application prospects in high-performance and low-power photodetectors with high sensitivity, fast response speed and wide spectrum detection in the future.

A room-temperature near-infrared photodetector based on a MoS2/CdTe p–n heterojunction with a broadband response up to 1700 nm

2018 ◽  
Vol 6 (18) ◽  
pp. 4861-4865 ◽  
Author(s):  
Yuange Wang ◽  
Xiaowen Huang ◽  
Di Wu ◽  
Ranran Zhuo ◽  
Enping Wu ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Near Infrared ◽  
Response Speed ◽  
Fast Response ◽  
Infrared Photodetectors ◽  
Infrared Photodetector ◽  
High Responsivity ◽  
Specific Detectivity

High-performance room-temperature infrared photodetectors based on MoS2/CdTe p–n heterojunction with broadband response, high responsivity, specific detectivity as well as fast response speed were demonstrated.

scholarly journals Tin Disulfide-Coated Microfiber for Humidity Sensing with Fast Response and High Sensitivity

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 648
Author(s):  
Aijie Liang ◽  
Jingyuan Ming ◽  
Wenguo Zhu ◽  
Heyuan Guan ◽  
Xinyang Han ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
Small Diameter ◽  
High Sensitivity ◽  
Large Change ◽  
Small Variation ◽  
Response Speed ◽  
Fast Response ◽  
Tin Disulfide ◽  
Recovery Times ◽  
Response And Recovery

Breath monitoring is significant in assessing human body conditions, such as cardiac and pulmonary symptoms. Optical fiber-based sensors have attracted much attention since they are immune to electromagnetic radiation, thus are safe for patients. Here, a microfiber (MF) humidity sensor is fabricated by coating tin disulfide (SnS2) nanosheets onto the surface of MF. The small diameter (~8 μm) and the long length (~5 mm) of the MF promise strong interaction between guiding light and SnS2. Thus, a small variation in the relative humidity (RH) will lead to a large change in optical transmitted power. A high RH sensitivity of 0.57 dB/%RH is therefore achieved. The response and recovery times are estimated to be 0.08 and 0.28 s, respectively. The high sensitivity and fast response speed enable our SnS2-MF sensor to monitor human breath in real time.

scholarly journals Self-Powered All-Inorganic Perovskite Photodetectors with Fast Response Speed

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Ting Zhang ◽  
Shibin Li
Keyword(s):  
High Performance ◽  
Solution Process ◽  
Response Speed ◽  
Fast Response ◽  
Single Step ◽  
Inorganic Perovskite ◽  
Perovskite Materials ◽  
Photoactive Materials ◽  
Self Powered ◽  
Solvent Processing

AbstractIn this manuscript, the inorganic perovskite CsPbI2Br and CsPbIBr2 are investigated as photoactive materials that offer higher stability than the organometal trihalide perovskite materials. The fabrication methods allow anti-solvent processing the CsPbIxBr3−x films, overcoming the poor film quality that always occur in a single-step solution process. The introduced diethyl ether in spin-coating process is demonstrated to be successful, and the effects of the anti-solvent on film quality are studied. The devices fabricated using the methods achieve high-performance, self-powered and the stabilized photodetectors show fast response speed. The results illustrate a great potential of all-inorganic CsPbIxBr3−x perovskites in visible photodetection and provide an effective way to achieve high performance devices with self-powered capability.

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