Room-temperature-functioning ammonia sensor based on solid-state CuxS films

Galdikas, A.; Mironas, A.; Strazdien, V; Šetkus, Arūnas; Ancutien, I; Janickis, Vitalijus

doi:10.1016/s0925-4005(00)00408-1

Cited by 81 publications

(34 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The successful synthesis of the (NH 4 )HV 9 Mo 3 O 31±δ •nH 2 O xerogel was confirmed using XPS spectra study where presence of NH 4 + , Mo 6+ , V 4+ , V 5+ ions, oxygen ions O 2-connected with molybdenum and vanadium ions, and oxygen in water molecules were captured. Figure 2 shows the XPS spectrum of (NH 4 )HV 9 Mo 3 O 31±δ •nH 2 O xerogel in the vanadium -oxygen region (points are experimental data).…”

Section: Resultsmentioning

confidence: 82%

“…    4 + ions is not accompanied by gelation, whereas, in the presence of molybdenum, (NH 4 )HV 9 Mo 3 O 31±δ •nH 2 O gels are formed [11]. Obtained gels were deposited on Ni substrates by screen printing method and dried in air.…”

mentioning

confidence: 99%

“…In Fig. 3 4 + ions [19]. Mo 3d emission comprises the pair of spin -orbit doublets with Mo 3d 3/2 and Mo 3d 5/2 binding energies of ~ 236 eV and ~ 233 eV respectively that was observed in other vanadium hydrates containing molybdenum [20].…”

mentioning

confidence: 99%

See 2 more Smart Citations

Xerogels of Ammonium Polyvanadatomolybdate as Starting Material for Ammonia Gas Sensors

Bondarenka

Sereika

Mironas

et al. 2015

ILCPA

View full text Add to dashboard Cite

The various gas sensors were designed for detection of different gases in the air using different oxides and impurities [1-3]. For example the manufacturing of ammonia sensors on the basis of CuxS-micro-porous-Si structure includes manufacture of micro-porous silicon, drawing on it of SiO2 isolating layer, and then the CuxS layer [4, 5]. The special equipment for all these processes is needed. More usable method for sensor production is so-called soft chemistry or sol–gel synthesis [6, 7].

show abstract

Section: Resultsmentioning

confidence: 82%

mentioning

confidence: 99%

See 1 more Smart Citation

Xerogels of Ammonium Polyvanadatomolybdate as Starting Material for Ammonia Gas Sensors

Bondarenka

Sereika

Mironas

et al. 2015

ILCPA

View full text Add to dashboard Cite

show abstract

“…Copper sulfide (Cu x S) is an important p-type metal chalcogenide semiconductor due to its potential uses in many photovoltaic and photothermal applications such as selective solar control coatings, transparent and conductive coatings, and thin film Cu sensor electrodes [2][3][4]. Cu x S thin films are also used in room temperature solid state gas sensors for ammonia and other molecules containing the NH n moiety as well as acetone and ethanol, while the most sensor materials are based on oxides that typically demand temperatures of at least a few hundred degrees to achieve good gas sensing properties [5][6][7]. Cu x S thin films may be combined with other semiconductor thin films to form ternary compounds that have significant optical and electrical properties for photovoltaic applications [8,9].…”

Section: Introductionmentioning

confidence: 99%

An investigation on SILAR deposited Cu$_{x}$S thin films

Astam¹,

Akaltun²,

Yıldırım³

2014

Turk J Phys

View full text Add to dashboard Cite

Abstract:A copper sulfide thin film was deposited on glass substrate by successive ionic layer adsorption and reaction method at room temperature, using cupric sulfate and sodium sulfide aqueous solutions as precursors. The structural, surface morphological, optical, and electrical properties of the as-deposited film were investigated via X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, optical absorption, and d.c. 2-point probe methods. The film was found to be amorphous, dense, and uniform. Average atomic percentage of Cu:S in the as-deposited film was calculated as 63:37. The band gap energy of copper sulfide thin film was found to be 2.14 eV and the resistivity was 10−2 Ω cm at room temperature. The effect of annealing on crystal structure was also studied and reported. X-ray diffraction patterns revealed that annealing the film at various temperatures slightly improved the crystallinity. By using thermoelectric power measurement, p-type electrical conductivity was determined for as-deposited and annealed samples.

show abstract

“…When no gas is present, the sensor resistance 223 returns to its default condition. Amongst other applications, these types of sensors 224 have been developed to measure NH 3 with reasonably fast response times [35], SO 2 225 [36] and gas compositions in catalytic convertors in car exhausts [37]. One of the 226 principle drawbacks of this type of sensor is its susceptibility to poisoning [38], i.e., 227 the metal oxide materials become unresponsive after reactions with certain types of 228 gases, thus incapacitating the sensor.…”

mentioning

confidence: 99%