Humidity sensor based on Ga2O3 nanorods doped with Na+ and K+ from GaN powder

Wang, Ding; Lou, Yanlong; Wang, Run; Wang, Pengpeng; Zheng, Xuejun; Zhang, Yong; Jiang, Nan

doi:10.1016/j.ceramint.2015.07.211

Cited by 36 publications

(11 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Особенно сильно этот эффект проявляется при RH ≥ 60%. При T ≤ 50 • C высокую чувствительность к водяным парам в диапазоне RH = 11−95%, быстродействие на уровне 10 с и менее показали толстые пленки из наностержней β-Ga 2 O 3 [28]. Отмечается, что эффект влияния влажности атмосферы на характеристики сенсоров усиливается при имплантации Na + и K + в β-Ga 2 O 3 .…”

Section: Introductionunclassified

Влияние влажности окружающей среды на электрическую проводимость полиморфных Ga-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--структур

Алмаев¹,

Николаев²,

Степанов³

et al. 2021

Физика И Техника Полупроводников

View full text Add to dashboard Cite

The effect of ambient humidity on the electrical conductive properties of α-Ga2O3 and α-Ga2O3/ε-Ga2O3 structures has been studied. Polymorphic Ga2O3 epitaxial layers were deposited by chloride vapor phase epitaxy on sapphire substrates. Pt and Pt/Ti were used as contacts. It was found that the Pt/α-Ga2O3/Pt and Pt/Ti/α-Ga2O3/ε-Ga2O3/Ti/Pt structures exhibit a high sensitivity of the current – voltage characteristics (I–V characteristics) to atmospheric humidity in the temperature range 25–100 °C. It was found that the effect of water vapor on the I–V characteristics of the structures is reversible and the most significant changes in the current in the samples are observed at a relative humidity RH ≥ 60%. With increasing temperature the effect of atmospheric humidity on the I–V characteristics decreases and disappears at T > 100 °C. The experimental results obtained are explained in terms of the Grottguss mechanism.

show abstract

Section: Introductionunclassified

Влияние влажности окружающей среды на электрическую проводимость полиморфных Ga-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--структур

Алмаев¹,

Николаев²,

Степанов³

et al. 2021

Физика И Техника Полупроводников

View full text Add to dashboard Cite

show abstract

“…This is due to their nontoxicity, biostability, biocompatibility, and ease of process separation [22,23]. Novel metal oxide-based platforms, like those using Ga 2 O 3 [24][25][26][27][28] or ZrO 2 [29][30][31][32][33][34], provide better electron conductivity, a higher isoelectric point, and improved biocompatibility or bioactivity [35]. Wang and co-authors prepared humidity sensors based on Ga 2 O 3 which has satisfying sensing properties [24].…”

Section: Introductionmentioning

confidence: 99%

“…Novel metal oxide-based platforms, like those using Ga 2 O 3 [24][25][26][27][28] or ZrO 2 [29][30][31][32][33][34], provide better electron conductivity, a higher isoelectric point, and improved biocompatibility or bioactivity [35]. Wang and co-authors prepared humidity sensors based on Ga 2 O 3 which has satisfying sensing properties [24]. In addition, the use of thin layers of ZnO causes good electrical transport, high isoelectric point and cost effectiveness.…”

Section: Introductionmentioning

confidence: 99%

Advanced Ga2O3/Lignin and ZrO2/Lignin Hybrid Microplatforms for Glucose Oxidase Immobilization: Evaluation of Biosensing Properties by Catalytic Glucose Oxidation

et al. 2019

View full text Add to dashboard Cite

In this study, novel Ga2O3/lignin and ZrO2/lignin hybrid materials were obtained and used as supports for the adsorption of the enzyme glucose oxidase (GOx). A biosensor system based on the hybrid supports was then designed to determine the concentration of glucose in various solutions. The obtained bioinspired platforms were analyzed to determine chemical and physical properties of the support structures. A determination was made of the effectiveness of the proposed method of immobilization and the quality of operation of the constructed glucose biosensor in electrochemical tests. To characterize the materials, Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), electrokinetic (zeta) potential measurements, atomic force microscopy (AFM), particle size measurements (NIBS technique), and elemental analysis (EA) were used. In further research, glucose oxidase (GOx) was immobilized on the surface of the obtained functional Ga2O3/lignin and ZrO2/lignin biomaterials. The best immobilization capacities—24.7 and 27.1 mg g−1 for Ga2O3/lignin and ZrO2/lignin, respectively—were achieved after a 24 h immobilization process. The Ga2O3/Lig/GOx and ZrO2/Lig/GOx systems were used for the construction of electrochemical biosensor systems, in a dedicated carbon paste electrode (CPE) with the addition of graphite and ferrocene.

show abstract

“…Due to its favorable electronical and optical properties, Ga 2 O 3 is regarded as a promising material for several applications in electronic [1,2] or optoelectronic devices [3], photodetectors [4,5] and sensors [2,[6][7][8][9]. The large band gap energy (4.8 eV) of Ga 2 O 3 [2] contributes to its superior photocatalytic performance [10,11].…”

Section: Introductionmentioning

confidence: 99%

Structural transformation of Ga2O3-based catalysts during photoinduced reforming of methanol

Vass

Pászti

Bálint

et al. 2017

Materials Research Bulletin

View full text Add to dashboard Cite

Highlights  β-Ga 2 O 3 is active in the methanol photocatalytic reforming under UV-vis irradiation.  PtO x co-catalyst is formed on the surface of Ga 2 O 3 by calcination of Pt(NH 3) 4 (NO 3) 2.  Introduction of PtO x co-catalyst results in enhanced hydrogen production.  In-situ metallic Pt formation during the photoinduced reaction is proved by XPS.  PtO x /Ga 2 O 3 transforms to Pt 0 /GaOOH during the photoinduced reaction.

show abstract

Humidity sensor based on Ga2O3 nanorods doped with Na+ and K+ from GaN powder

Cited by 36 publications

References 42 publications

Влияние влажности окружающей среды на электрическую проводимость полиморфных Ga-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--структур

Влияние влажности окружающей среды на электрическую проводимость полиморфных Ga-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=--структур

Advanced Ga2O3/Lignin and ZrO2/Lignin Hybrid Microplatforms for Glucose Oxidase Immobilization: Evaluation of Biosensing Properties by Catalytic Glucose Oxidation

Structural transformation of Ga2O3-based catalysts during photoinduced reforming of methanol

Contact Info

Product

Resources

About