Ultraviolet fast-response photoelectric effect in tilted orientation SrTiO3 single crystals

2006 ◽  
Vol 89 (17) ◽  
pp. 173507 ◽  
Author(s):  
Kun Zhao ◽  
Kui-juan Jin ◽  
Yanhong Huang ◽  
Songqing Zhao ◽  
Huibin Lu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Fast Response ◽  
Photoelectric Effect

Ultraviolet Photoelectric Effect in ZrO 2 Single Crystals

2007 ◽  
Vol 24 (2) ◽  
pp. 530-531 ◽  
Author(s):  
Xing Jie ◽  
Wang Xu ◽  
Zhao Kun ◽  
Li Jie ◽  
Jin Kui-Juan ◽  
...  
Keyword(s):  
Single Crystals ◽  
Photoelectric Effect

scholarly journals Inch-sized high-quality perovskite single crystals by suppressing phase segregation for light-powered integrated circuits

2021 ◽  
Vol 7 (7) ◽  
pp. eabc8844
Author(s):  
Yucheng Liu ◽  
Yunxia Zhang ◽  
Xuejie Zhu ◽  
Zhou Yang ◽  
Weijun Ke ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Single Crystals ◽  
Integrated Circuit ◽  
High Performance ◽  
Imaging System ◽  
Phase Segregation ◽  
Response Speed ◽  
Fast Response ◽  
High Quality ◽  
Carrier Lifetimes

The triple-cation mixed-halide perovskite (FAxMAyCs1-x-y)Pb(IzBr1-z)3 (FAMACs) is the best composition for thin-film solar cells. Unfortunately, there is no effective method to prepare large single crystals (SCs) for more advanced applications. Here, we report an effective additive strategy to grow 2-inch-sized high-quality FAMACs SCs. It is found that the judiciously selected reductant [formic acid (FAH)] effectively minimizes iodide oxidation and cation deprotonation responsible for phase segregation. Consequently, the FAMACs SC shows more than fivefold enhancement in carrier lifetimes, high charge mobility, long carrier diffusion distance, as well as superior uniformity and long-term stability, making it possible for us to design high-performance self-powered integrated circuit photodetector. The device exhibits large responsivity, high photoconductive gain, excellent detectivity, and fast response speed; all values are among the highest reported to date for planar-type single-crystalline perovskite photodetectors. Furthermore, an integrated imaging system is fabricated on the basis of 12 × 12 pixelated matrixes of the single-crystal photodetectors.

Controllable seeded flux growth and optoelectronic properties of bulk o-SiP crystals

CrystEngComm ◽  
2017 ◽  
Vol 19 (46) ◽  
pp. 6986-6991 ◽  
Author(s):  
Chunlong Li ◽  
Shanpeng Wang ◽  
Xixia Zhang ◽  
Ning Jia ◽  
Tongtong Yu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Layered Structure ◽  
Fast Response ◽  
Optoelectronic Properties ◽  
Switching Behavior ◽  
Flux Growth

Seeded flux growth of bulk o-SiP single crystals with a layered structure, clear photo-switching behavior and relatively fast response.

scholarly journals Thin MAPb0.5Sn0.5I3 Perovskite Single Crystals for Sensitive Infrared Light Detection

2022 ◽  
Vol 9 ◽  
Author(s):  
Jinming Wu ◽  
Yongqiang Zhang ◽  
Shuang Yang ◽  
Zhaolai Chen ◽  
Wei Zhu
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Near Infrared ◽  
High Sensitivity ◽  
Fast Response ◽  
Low Noise ◽  
Infrared Light ◽  
Light Illumination ◽  
Lead Iodide ◽  
Methylammonium Lead Iodide

Metal halide perovskite single-crystal detectors have attracted increasing attention due to the advantages of low noise, high sensitivity, and fast response. However, the narrow photoresponse range of widely investigated lead-based perovskite single crystals limit their application in near-infrared (NIR) detection. In this work, tin (Sn) is incorporated into methylammonium lead iodide (MAPbI3) single crystals to extend the absorption range to around 950 nm. Using a space-confined strategy, MAPb0.5Sn0.5I3 single-crystal thin films with a thickness of 15 μm is obtained, which is applied for sensitive NIR detection. The as-fabricated detectors show a responsivity of 0.514 A/W and a specific detectivity of 1.4974×1011 cmHz1/2/W under 905 nm light illumination and –1V. Moreover, the NIR detectors exhibit good operational stability (∼30000 s), which can be attributed to the low trap density and good stability of perovskite single crystals. This work demonstrates an effective way for sensitive NIR detection.

On a tribo-photoelectric effect of Li2O-doped zinc oxide single crystals

1976 ◽  
Vol 34 (1) ◽  
pp. 145-152
Author(s):  
K. Hauffe ◽  
A. Meyer-Laack
Keyword(s):  
Zinc Oxide ◽  
Single Crystals ◽  
Photoelectric Effect

scholarly journals Design of a Plantar Pressure Insole Measuring System Based on Modular Photoelectric Pressure Sensor Unit

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3780
Author(s):  
Bin Ren ◽  
Jianwei Liu
Keyword(s):  
Plantar Pressure ◽  
Cooperative Control ◽  
Low Cost ◽  
Fast Response ◽  
Photoelectric Effect ◽  
Measuring System ◽  
Human Walking ◽  
Human Gait ◽  
Pressure Sensing ◽  
Sensor Unit

Accurately perceiving and predicting the parameters related to human walking is very important for man–machine coupled cooperative control systems such as exoskeletons and power prostheses. Plantar pressure data is rich in human gait and posture information and is an essential source of reference information as the input of the exoskeleton control system. Therefore, the proper design of the pressure sensing insole and validation is a big challenge considering the requirements such as convenience, reliability, no interference and so on. In this research, we developed a low-cost modular sensing unit based on the principle of photoelectric sensing and designed a plantar pressure sensing insole to achieve the purpose of sensing human walking gait and posture information. On the one hand, the sensor unit is made of economy-friendly commercial flexible circuits and elastic silicone, and the mechanical and electrical characteristics of the modular sensor unit are evaluated by a self-developed pressure-related calibration system. The calibration results show that the modular sensor based on the photoelectric sensing principle has fast response and negligible hysteresis. On the other hand, we analyzed the area where the plantar pressure is densely distributed. One benefit of the modular sensing unit design is that it is rather convenient to fabricate different insole solutions, so we fabricated and compared several pressure-sensitive insole solutions in this preliminary study. During the dynamic locomotion experiments of wearing the pressure-sensing insole, the time series signal of each sensor unit was collected and analyzed. The results show that the pressure sensing insole based on the photoelectric effect can sense the distribution of the plantar pressure by capturing the deformation of the insole caused by the foot contact during locomotion, and provide reliable gait information for wearable applications.

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