Room-Temperature Fabricated Amorphous Ga2 O3 High-Response-Speed Solar-Blind Photodetector on Rigid and Flexible Substrates

2017 ◽  
Vol 5 (19) ◽  
pp. 1700454 ◽  
Author(s):  
Shujuan Cui ◽  
Zengxia Mei ◽  
Yonghui Zhang ◽  
Huili Liang ◽  
Xiaolong Du
Keyword(s):  
Room Temperature ◽  
Response Speed ◽  
High Response ◽  
Flexible Substrates ◽  
Solar Blind

Phototransistors based on a donor–acceptor conjugated polymer with a high response speed

2015 ◽  
Vol 3 (41) ◽  
pp. 10734-10741 ◽  
Author(s):  
Qinghe Wang ◽  
Min Zhu ◽  
Di Wu ◽  
Guobing Zhang ◽  
Xiaohong Wang ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carrier Transport ◽  
Incident Light ◽  
Response Speed ◽  
High Response ◽  
Electron Carrier ◽  
Transport Response ◽  
Donor Acceptor

A D–A polymer phototransistor shows both hole- and electron-carrier transport response to incident light with photoswitching speeds below 14 ms.

Interpolation circuit with high resolution and high response speed

2009 ◽  
Author(s):  
Weiying Piao ◽  
Yibao Yuan ◽  
Lianhu Xu ◽  
Hao Zhang
Keyword(s):  
High Resolution ◽  
Response Speed ◽  
High Response

Programmed Deformations of 3D-Printed Tough Physical Hydrogels with High Response Speed and Large Output Force

2018 ◽  
Vol 28 (37) ◽  
pp. 1803366 ◽  
Author(s):  
Si Yu Zheng ◽  
Yangyang Shen ◽  
Fengbo Zhu ◽  
Jun Yin ◽  
Jin Qian ◽  
...  
Keyword(s):  
Response Speed ◽  
High Response ◽  
Output Force ◽  
3D Printed ◽  
Large Output

High-Response Room-Temperature NO2 Sensor and Ultrafast Humidity Sensor Based on SnO2 with Rich Oxygen Vacancy

2019 ◽  
Vol 11 (14) ◽  
pp. 13441-13449 ◽  
Author(s):  
Yujia Zhong ◽  
WeiWei Li ◽  
Xuanliang Zhao ◽  
Xin Jiang ◽  
Shuyuan Lin ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Room Temperature ◽  
Humidity Sensor ◽  
High Response ◽  
No2 Sensor

scholarly journals Simultaneously improved sensitivity and response speed of β-Ga2O3 solar-blind photodetector via localized tuning of oxygen deficiency

2019 ◽  
Vol 114 (11) ◽  
pp. 113506 ◽  
Author(s):  
L. X. Qian ◽  
H. Y. Liu ◽  
H. F. Zhang ◽  
Z. H. Wu ◽  
W. L. Zhang
Keyword(s):  
Oxygen Deficiency ◽  
Response Speed ◽  
Solar Blind

Deposition of Al-Doped Zinc Oxide by Direct Pulsed Laser Recrystallization at Room Temperature on Various Substrates for Solar Cell Applications

2012 ◽  
Author(s):  
Martin Y. Zhang ◽  
Qiong Nian ◽  
Gary J. Cheng
Keyword(s):  
Thin Film ◽  
Thermal Conductivity ◽  
Solar Cell ◽  
Melting Point ◽  
Room Temperature ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Flexible Substrates ◽  
Laser Recrystallization ◽  
Azo Thin Film

In this study, a method combining room temperature pulsed laser deposition (PLD) and direct pulsed laser recrystallization (DPLR) are introduced to deposit superior transparent conductive oxide (TCO) layer on low melting point flexible substrates. As an indispensable component of thin film solar cell, TCO layer with a higher quality will improve the overall performance of solar cells. Alumina-doped zinc oxide (AZO), as one of the most promising TCO candidates, has now been widely used in solar cells. However, to achieve optimal electrical and optical properties of AZO on low melting point flexible substrate is challenging. Recently developed direct pulsed laser recrystallization (DPLR) technique is a scalable, economic and fast process for point defects elimination and recrystallization at room temperature. It features selective processing by only heating up the TCO thin film and preserve the underlying substrate at low temperature. In this study, 250 nm AZO thin film is pre-deposited by pulsed laser deposition (PLD) on flexible and rigid substrates. Then DPLR is introduced to achieve a uniform TCO layer on low melting point flexible substrates, i.e. commercialized Kapton polyimide film and micron-thick Al-foil. Both finite element analysis (FEA) simulation and designed experiments are carried out to demonstrate that DPLR is promising in manufacturing high quality AZO layers without any damage to the underlying flexible substrates. Under appropriate experiment conditions, such as 248 nm in laser wavelength, 25 ns in laser pulse duration, 15 laser pulses at laser fluence of 25 mJ/cm2, desired temperature would result in the AZO thin film and activate the grain growth and recrystallization. Besides laser conditions, the thermal conductivity and crystallinity of the substrate serve as additional factors in the DPLR process. It is found that the substrate’s thermal conductivity correlates positively with the AZO crystal size; the substrate’s crystallinity correlates positively with the AZO film’s crystallinity. The thermal expansion of substrate would also contribute to the film tensile stress after processed by DPLR technique. The overall results indicate that DPLR technique is useful and scalable for flexible solar cell manufacturing.

scholarly journals Self-powered, high response and fast response speed metal–insulator–semiconductor structured photodetector based on 2D MoS2

RSC Advances ◽  
2018 ◽  
Vol 8 (49) ◽  
pp. 28041-28047 ◽  
Author(s):  
Xinxin Liu ◽  
Feng Li ◽  
Minxuan Xu ◽  
Junjie Qi
Keyword(s):  
Response Speed ◽  
Fast Response ◽  
High Response ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
Response Recovery ◽  
Self Powered

A MIS structured self-powered photodetector of Pd/HfO2/MoS2 was fabricated by inserting a thin insulator, which has a fast response/recovery speed.

scholarly journals Synthesis of g-C3N4-Decorated ZnO Porous Hollow Microspheres for Room-Temperature Detection of CH4 under UV-Light Illumination

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1507 ◽  
Author(s):  
Min Xiao ◽  
Yanwei Li ◽  
Bo Zhang ◽  
Guang Sun ◽  
Zhanying Zhang
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Uv Light ◽  
Response Speed ◽  
Hollow Microspheres ◽  
Oxide Semiconductor ◽  
Light Illumination ◽  
Long Term Stability ◽  
Temperature Detection ◽  
Good Repeatability

UV light-assisted gas sensors based on metal oxide semiconductor (MOS) have attracted much attention in detecting flammable and explosive gases at room temperature. In this paper, graphite-based carbon nitride (g-C3N4) nanosheets-decorated ZnO porous hollow microspheres (PHMSs) with the size about 3~5 μm in diameter were successfully synthesized by annealing the solvothermally-synthesized Zn5(CO3)2(OH)6 PHMSs together with g-C3N4. The synthesized samples were characterized by XRD, SEM, TEM, FT-IR and XPS. The results indicated that the prepared g-C3N4/ZnO PHMSs were constructed by numerous loosely stacked ZnO nanoparticles of 20~30 nm in diameter. Gas sensing tests indicated that under UV light (365~385 nm) illumination, the sensors fabricated with g-C3N4/ZnO HPMSs showed an enhanced response and faster response speed than the pure ZnO counterpart at room temperature. In addition, the g-C3N4/ZnO sensor also exhibited good repeatability and long-term stability for CH4 detection.

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