Structure, composition and optical properties of ZnS thin films prepared by spray pyrolysis

Elidrissi, B.; Addou, M.; Regragui, M.; Bougrine, A.; Kachouane, A.; Bérnède, J.C.

doi:10.1016/s0254-0584(00)00351-5

Cited by 179 publications

(82 citation statements)

References 17 publications

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“…Other diffraction peaks of cubic phase, such as (220) and (311), were also detected. Preparation of crystalline thin ZnS films by CSP with cubic phase have been reported [17]. The average size of crystallites (D) for thin ZnS films, estimated by considering FWHM only of (111) diffraction curve, increased from 4.7 nm to 8.7 nm with the increase in substrate temperature from 400°C to 500°C.…”

Section: Optimization Of Substrate Temperaturementioning

confidence: 98%

Effect of substrate temperature and precursor ratio on properties of thin ZnS films sprayed by improved method

Zaware

Wagh

2014

Materials Science-Poland

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Zinc sulphide (ZnS) thin films were prepared by improved spray pyrolysis (ISP) method. The ISP parameters, such as carrier gas flow rate, solution flow rate and substrate temperature, were controlled with an accuracy of ±0.25 lpm, ±1 ml/h and ±1°C, respectively. The solution was sprayed in a pulsed mode. The substrate temperature was optimized by analyzing substrate temperature dependent properties of thin films. The thin film deposited at a temperature of 450°C was dense and fairly smooth with satisfactory crystallinity and very small impurity content. The effect of precursor ratio in the solution on structural, compositional and optical properties of thin ZnS films, deposited at a temperature of 450°C, was studied. A gradual increase in band gap energy from 3.524 eV to 3.634 eV, refractive index from 2.5 to 2.9 and dielectric constant from 6.6 to 8.7 were observed with the variation of solution precursor (Zn:S) ratio from (1:2) to (1:6). The structural and compositional studies support this kind of enhancement in optical properties. The results show that the thin ZnS film prepared by ISP at the substrate temperature of 450°C from a solution with specific precursor ratio can be used for optoelectronic and photovoltaic applications.

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Section: Optimization Of Substrate Temperaturementioning

confidence: 98%

Effect of substrate temperature and precursor ratio on properties of thin ZnS films sprayed by improved method

Zaware

Wagh

2014

Materials Science-Poland

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“…ZnS can be obtained as polycrystalline thin film by several deposition techniques: reactive sputtering [1], chemical vapour deposition [5], atomic layer epitaxy [6], chemical bath deposition [2,7] and spray pyrolysis [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

ZnS thin films deposited by spray pyrolysis technique

Dedova

Krunks

Volobujeva

et al. 2005

phys. stat. sol. (c)

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. Hk, 78.30.Fs, 81.05.Dz, 81.15.Rs ZnS thin films were prepared by spray pyrolysis technique using aqueous solutions of zinc chloride and thiourea at molar ratio of 1:1, 1:2 and 2:1. The films were characterized by XRD, FTIR, SEM and EDX. The phase composition, structure and morphology of sprayed films are controlled by both, the substrate temperature and the precursors molar ratio in the solution. The films deposited below 380 ºC are amorphous and contain thermal decomposition residues of Zn(tu) 2 Cl 2 . Chlorine content becomes negligible at 500 ºC, carbon and nitrogen in the form of zinc cyanamide are present in a trace amount up to 540 ºC. Highly (002) orientated ZnS films with wurtzite structure and closely stoichiometric composition could be grown at temperatures close to 500 ºC using Zn:S molar ratio of 1:2 in spray solution. The film consists of well-shaped hexagonal prisms with size of 100 nm. The spray of equimolar solution (Zn:S = 1:1) results in ZnS films with smaller grain size (~25 nm) and slightly Zn-rich composition at 500 ºC. Higher temperature (530 ºC) is needed to grow the films with wurtzite structure. The use of Zn-rich (Zn/S>1) solution results in the films consisting of ZnO and ZnS phases above 400 ºC.

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“…Спектры флуоресценции регистрировали на спектрофлуориметре в диапазоне 360−820 нм с шагом 1 нм в режиме " на отражение" для уменьшения влияния перепоглощения. Средний радиус частиц ZnCdS оценивали из спектров поглощения по краю полосы поглощения (край Урбаха) по изменению ширины запрещенной зоны ( E g ) относи-тельно значения для объемного кристалла с использова-нием приближения эффективных масс согласно [8]. Раз-мер частиц определялся из светлопольных изображений (микрофотографий), полученных на просвечивающем электронном микроскопе (ПЭМ) СМ12 (Philips), колло-идные растворы наносились на медные сетки с аморф-ным углеродным покрытием, высушивались и исследо-вались с различным увеличением при ускоряющем на-пряжении до 120 кВ.…”

Section: экспериментunclassified

Особенности наночастиц ZnCdS, синтезированных в различных растворителах

Кязым-заде¹,

Джафаров²,

Насиров³

et al. 2017

Физика И Техника Полупроводников

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Получены устойчивые коллоидные растворы наночастиц ZnCdS диаметром 3-6 нм в поливиниловом спирте, полиэтиленгликоле и H2O. Размер синтезированных наночастиц не зависел от соотношения прекурсоров. Показано, что стабилизация частиц обусловлена зарядовым фактором устойчивости и достигается в отсутствие дополнительных стабилизирующих добавок. Синтезированные квантовые точки ZnCdS излучают в широкой области спектра 450-600 нм. DOI: 10.21883/FTP.2017.04.44339.8308

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Structure, composition and optical properties of ZnS thin films prepared by spray pyrolysis

Cited by 179 publications

References 17 publications

Effect of substrate temperature and precursor ratio on properties of thin ZnS films sprayed by improved method

Effect of substrate temperature and precursor ratio on properties of thin ZnS films sprayed by improved method

ZnS thin films deposited by spray pyrolysis technique

Особенности наночастиц ZnCdS, синтезированных в различных растворителах

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