Enhancing the performance of vanadyl phthalocyanine-based humidity sensor by varying the thickness

Roslan, Nur Adilah; Bakar, Ab Halim Abu; Bawazeer, Tahani M.; Alsoufi, Mohammad S.; Alsenany, Nourah; Majid, W.H. Abd.; Supangat, Azzuliani

doi:10.1016/j.snb.2018.09.109

Cited by 36 publications

(13 citation statements)

References 33 publications

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“…Moreover, water diffusion and the amount of sensitive material also greatly affect the hysteresis value. 29,30 The fast diffusion of water molecules and a small amount of sensing material endow the K 2 Ti 2 O 5 -based sensor with a small hysteresis value. The sensor is placed back and forth between the 11% RH and other RH environments for 5 min in each RH environment to measure the impedance for the response and recovery characteristics.…”

Section: Resultsmentioning

confidence: 99%

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges

Chen

et al. 2021

ACS Appl. Electron. Mater.

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K2Ti2O5 powders were prepared by a solid-state reaction method. Sensors fabricated from the K2Ti2O5 powders exhibited prominent sensing properties, such as a high sensing response value of 70 741, perfect linear response in the humidity environment below 75% relative humidity, short response/recovery time (34/48 s), hysteresis value of 14.3%, and good repeatability. The above high performances were evidenced to be due to the active action of surface potassium ions. These results indicate that K2Ti2O5 powders have promising applications in the humidity sensing field.

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Section: Resultsmentioning

confidence: 99%

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges

Chen

et al. 2021

ACS Appl. Electron. Mater.

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“…Graphene oxide-based composite materials [66] have also proved excellent for water detection, as shown in Table 3. 3, the thinnest active layer film had the highest sensitivity and shortest recovery time [67].…”

Section: Capacitive Sensorsmentioning

confidence: 94%

Gas sensing based on organic composite materials: Review of sensor types, progresses and challenges

Nasri

Pétrissans

Fierro

2021

Materials Science in Semiconductor Processing

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Over the past decade, organic semiconductors and renewable resources have aroused great interest in basic research and practical applications. Composites based on organic materials and materials of biological origin, if not all bio-based, are potentially abundant and partly biodegradable. These materials have demonstrated advantages making them ideally suited for gas-sensing applications. Herein, we present different detection principles of gas sensing, such as electrochemical, resistive, capacitive, and acoustic sensors. Besides, we describe sensing properties and suitable materials to enhance the selectivity, sensitivity and response/recovery time of gas sensors. In addition, an overview of different forms of materials based on renewable resources and inorganic/organic semiconductors, as well as the development of different types of sensors are discussed. Finally, challenges and future directions are examined in order to develop a low-cost microscale sensing technology using composite materials based on renewable resources. We anticipate that chemical engineering, computer science, machine learning and embedded systems can contribute to the development of new sensing materials.

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“…They are quite bulky and can be easily bound to different bivalent ions such as Fe 2+ , Zn 2+ , Cu 2+ , Co 2+ , Ni 2+ within their central cavities, affecting their physical and electrical properties. Recent studies showed that zinc phthalocyanine (ZnPc) or vanadyl 3,10,17,24-tetra-tert-butyl-1,8,15,22-tetrakis(dimethylamino)-29H,31Hphthalocyanine (VTP)-based microporous device were employed as a humidity sensing material based on the variation of their capacitance response [37,38].…”

Section: Organic Materialsmentioning

confidence: 99%

Recent Sensing Technologies of Imperceptible Water in Atmosphere

Mekawy

Kawakita

2022

Chemosensors

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Accurate detection and quantitative evaluation of environmental water in vapor and liquids state expressed as humidity and precipitation play key roles in industrial and scientific applications. However, the development of supporting tools and techniques remains a challenge. Although optical methods such as IR and LASER could detect environmental water in the air, their apparatus is relatively huge. Alternatively, solid detection field systems (SDFSs) could recently lead to a revolution in device downsizing and sensing abilities via advanced research, mainly for materials technology. Herein, we present an overview of several SDFS based sensing categories and their core materials mainly used to detect water in atmosphere, either in the vapor or liquid phase. We considered the governing mechanism in the detection process, such as adsorption/desorption, condensation/evaporation for the vapor phase, and surface attach/detach for the liquid phase. Sensing categories such as optical, chilled mirror, resistive, capacitive, gravimetric sensors were reviewed together with their designated tools such as acoustic wave, quartz crystal microbalance, IDT, and many others, giving typical examples of daily based real scientific applications.

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Enhancing the performance of vanadyl phthalocyanine-based humidity sensor by varying the thickness

Cited by 36 publications

References 33 publications

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges

Gas sensing based on organic composite materials: Review of sensor types, progresses and challenges

Recent Sensing Technologies of Imperceptible Water in Atmosphere

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Enhancing the performance of vanadyl phthalocyanine-based humidity sensor by varying the thickness

Cited by 36 publications

References 33 publications

Superior Linear Response of K2Ti2O5 in Low and Medium Humidity Ranges

Superior Linear Response of K2Ti2O5 in Low and Medium Humidity Ranges

Gas sensing based on organic composite materials: Review of sensor types, progresses and challenges

Recent Sensing Technologies of Imperceptible Water in Atmosphere

Contact Info

Product

Resources

About

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges

Superior Linear Response of K₂Ti₂O₅ in Low and Medium Humidity Ranges