Visible light enhanced gas sensing of CdSe nanoribbons of ethanol

Lin, Zhangqing; Liao, Fan; Zhu, Lili; Lu, Shunkai; Sheng, Minqi; Gao, Suning; Shao, Mingwang

doi:10.1039/c3ce42577k

Cited by 16 publications

(6 citation statements)

References 31 publications

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“…When our SnO 2 sensors are exposed to the air, these electrons are transferred from the SnO 2 sensor to the physisorbed oxygen resulting in the formation of adsorbed oxygen ions which are charged and electrostatically stabilized on the SnO 2 surface. The following simplified reactions have been suggested for the formation of chemisorbed oxygen ions (O 2 À , O À and O 2À ) [40][41][42].…”

Section: Resultsmentioning

confidence: 99%

Tuning SnO 2 architectures with unitary or composite microstructure for the application of gas sensors

Yang

Guo

2016

Journal of Colloid and Interface Science

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Section: Resultsmentioning

confidence: 99%

Tuning SnO 2 architectures with unitary or composite microstructure for the application of gas sensors

Yang

Guo

2016

Journal of Colloid and Interface Science

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“…These inherent features of CdS significantly enhance both light absorption and conductivity [63]. Z. Lin et al focused on employing cadmium selenide (CdSe) nanoribbons in the fabrication of visible light-enhanced ethanol gas sensors [64]. They utilised a 350 W xenon lamp as an external source to ramp up the sensor ability.…”

Section: Chemoresistorsmentioning

confidence: 99%

Effects of Visible Light on Gas Sensors: From Inorganic Resistors to Molecular Material-Based Heterojunctions

Ganesh Moorthy,

Bouvet

2024

Sensors

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In the last two decades, many research works have been focused on enhancing the properties of gas sensors by utilising external triggers like temperature and light. Most interestingly, the light-activated gas sensors show promising results, particularly using visible light as an external trigger that lowers the power consumption as well as improves the stability, sensitivity and safety of the sensors. It effectively eliminates the possible damage to sensing material caused by high operating temperature or high energy light. This review summarises the effect of visible light illumination on both chemoresistors and heterostructure gas sensors based on inorganic and organic materials and provides a clear understanding of the involved phenomena. Finally, the fascinating concept of ambipolar gas sensors is presented, which utilised visible light as an external trigger for inversion in the nature of majority charge carriers in devices. This review should offer insight into the current technologies and offer a new perspective towards future development utilising visible light in light-assisted gas sensors.

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“…One way is to use semiconductors with a smaller band gap, which allows the absorption of visible light photons as the material of the sensitive layer. Such semiconductors are, for example, CdSe [ 106 , 107 ], CdS [ 108 , 109 , 110 ], MoS 2 [ 111 ], WS 2 [ 112 ], SnS 2 [ 113 ], and BiI 3 [ 114 ], and recently attracting high attention halide perovskite materials [ 115 , 116 ]. Since the use of light activation is aimed at reducing the operating temperature down to room temperature, the sights for the thermal stability of materials under gas detection conditions are lowered, which allows us to consider some halides, sulfides, and other compounds as materials for gas sensors.…”

Section: Activation Of Gas Sensitivity Of Semiconductor Metal Oxides Under Visible Lightmentioning

confidence: 99%

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

2021

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The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, In2O3, and WO3, which are the most widely used sensitive materials for semiconductor gas sensors, is presented. The activation of the gas sensitivity of semiconductor materials by both UV and visible light is considered. When activated by UV light, the typical approaches for creating materials are (i) the use of individual metal oxides, (ii) chemical modification with nanoparticles of noble metals and their oxides, (iii) and the creation of nanocomposite materials based on metal oxides. In the case of visible light activation, the approaches used to enhance the photo- and gas sensitivity of wide-gap metal oxides are (i) doping; (ii) spectral sensitization using dyes, narrow-gap semiconductor particles, and quantum dots; and (iii) addition of plasmon nanoparticles. Next, approaches to the description of the mechanism of the sensor response of semiconductor sensors under the action of light are considered.

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Visible light enhanced gas sensing of CdSe nanoribbons of ethanol

Cited by 16 publications

References 31 publications

Tuning SnO 2 architectures with unitary or composite microstructure for the application of gas sensors

Tuning SnO 2 architectures with unitary or composite microstructure for the application of gas sensors

Effects of Visible Light on Gas Sensors: From Inorganic Resistors to Molecular Material-Based Heterojunctions

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

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