Room-temperature Coulomb staircase in semiconducting InP nanowires modulated with light illumination

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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Room temperature NH3 detection of Ti/graphene devices promoted by visible light illumination

Journal of Materials Chemistry C ◽

10.1039/c6tc04416f ◽

2017 ◽

Vol 5 (5) ◽

pp. 1113-1120 ◽

Cited By ~ 13

Author(s):

Min Zhao ◽

Lanqin Yan ◽

Xianfeng Zhang ◽

Lihua Xu ◽

Zhiwei Song ◽

...

Keyword(s):

Chemical Vapor Deposition ◽

Visible Light ◽

Vapor Deposition ◽

Room Temperature ◽

Chemical Vapor ◽

Light Illumination ◽

Visible Light Illumination ◽

Grown Graphene ◽

Graphene Devices

3, 5 and 10 nm thick Ti decorated chemical-vapor-deposition (CVD) grown graphene devices (Ti/Gr) for NH3 detection were fabricated, and their sensing performances were great promoted by visible light illumination.

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Cadmium sulfide activated zinc oxide coatings deposited by liquid plasma spray for room temperature nitrogen dioxide detection under visible light illumination

Ceramics International ◽

10.1016/j.ceramint.2015.11.170 ◽

2016 ◽

Vol 42 (4) ◽

pp. 4845-4852 ◽

Cited By ~ 36

Author(s):

Xin Geng ◽

Chao Zhang ◽

Marc Debliquy

Keyword(s):

Zinc Oxide ◽

Visible Light ◽

Nitrogen Dioxide ◽

Cadmium Sulfide ◽

Plasma Spray ◽

Room Temperature ◽

Light Illumination ◽

Oxide Coatings ◽

Visible Light Illumination

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Room temperature nitrogen dioxide sensors based on N719-dye sensitized amorphous zinc oxide sensors performed under visible-light illumination

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2014.11.090 ◽

2015 ◽

Vol 209 ◽

pp. 69-77 ◽

Cited By ~ 34

Author(s):

Chao Zhang ◽

Jie Wang ◽

Marie-Georges Olivier ◽

Marc Debliquy

Keyword(s):

Zinc Oxide ◽

Visible Light ◽

Nitrogen Dioxide ◽

Room Temperature ◽

Light Illumination ◽

Dye Sensitized ◽

Visible Light Illumination

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Visible-Light-Driven Room Temperature NO2 Gas Sensor Based on Localized Surface Plasmon Resonance: The Case of Gold Nanoparticle Decorated Zinc Oxide Nanorods (ZnO NRs)

Chemosensors ◽

10.3390/chemosensors10010028 ◽

2022 ◽

Vol 10 (1) ◽

pp. 28

Author(s):

Qomaruddin ◽

Olga Casals ◽

Hutomo Suryo Wasisto ◽

Andreas Waag ◽

Joan Daniel Prades ◽

...

Keyword(s):

Zinc Oxide ◽

Visible Light ◽

Surface Plasmon ◽

Room Temperature ◽

Green Light ◽

Zinc Oxide Nanorods ◽

Localized Surface Plasmon ◽

Light Illumination ◽

Au Nps ◽

Oxide Nanorods

In this work, nitrogen dioxide (NO2) gas sensors based on zinc oxide nanorods (ZnO NRs) decorated with gold nanoparticles (Au NPs) working under visible-light illumination with different wavelengths at room temperature are presented. The contribution of localized surface plasmon resonant (LSPR) by Au NPs attached to the ZnO NRs is demonstrated. According to our results, the presence of LSPR not only extends the functionality of ZnO NRs towards longer wavelengths (green light) but also increases the response at shorter wavelengths (blue light) by providing new inter-band gap energetic states. Finally, the sensing mechanism based on LSPR Au NPs is proposed.

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Flexible and transparent sensors for ultra-low NO2 detection at room temperature under visible light illumination

Journal of Materials Chemistry A ◽

10.1039/d0ta02934c ◽

2020 ◽

Vol 8 (29) ◽

pp. 14482-14490 ◽

Cited By ~ 2

Author(s):

Xiao-Xue Wang ◽

Hua-Yao Li ◽

Xin Guo

Keyword(s):

Visible Light ◽

Room Temperature ◽

Light Illumination ◽

Stability Tests ◽

Visible Light Illumination ◽

No2 Detection

Flexible and transparent sensors based on parallelly aligned In2O3 nanowires can detect ppb-level NO2 at room temperature under visible light (even under an iPhone screen). The sensing performances are maintained after bending and stability tests.

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Cu/graphene interdigitated electrodes with various copper thicknesses for UV-illumination-enhanced gas sensors at room temperature

Physical Chemistry Chemical Physics ◽

10.1039/d0cp04405a ◽

2020 ◽

Vol 22 (44) ◽

pp. 25769-25779

Author(s):

Min Zhao ◽

Attia Falak ◽

Yi Tian ◽

Lanqin Yan ◽

Rujun Liu ◽

...

Keyword(s):

Gas Sensors ◽

Room Temperature ◽

High Efficiency ◽

Uv Light ◽

Light Illumination ◽

Interdigitated Electrodes ◽

Uv Illumination

High efficiency detection of NO2 and NH3 by 8 nm Cu/graphene sensor at room temperature under UV light illumination.

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ROOM TEMPERATURE TUNNELING CHARACTERISTICS OF ULTRA-SMALL NORMAL JUNCTIONS

Modern Physics Letters B ◽

10.1142/s0217984992000363 ◽

1992 ◽

Vol 06 (05) ◽

pp. 273-280 ◽

Cited By ~ 5

Author(s):

M.D. REEVE ◽

O.G. SYMKO ◽

R. LI

Keyword(s):

Scanning Tunneling Microscope ◽

Coulomb Blockade ◽

Room Temperature ◽

Tunnel Junctions ◽

Electron Tunneling ◽

Single Electron ◽

Scanning Tunneling ◽

Tunneling Microscope ◽

Single Electron Tunneling ◽

Coulomb Staircase

Tunneling studies between a Scanning Tunneling Microscope (STM)-controlled fine NbN tip and a NbN thin film show single electron tunneling characteristics at room temperature. The I-V curves display the Coulomb blockade and the Coulomb staircase caused by single electron charging of a series combination of two tunnel junctions. These room temperature observations indicate that it may be possible to operate single-electron-based devices in non-cryogenic regimes.

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