The study of lead sulphide films. VI. Influence of oxidants on the chemically deposited PbS thin films

Naşcu, Cristina; Vomir, Valentina; Pop, Ileana; Ionescu, V.; Grecu, Rodica

doi:10.1016/s0921-5107(96)01611-x

Cited by 24 publications

(12 citation statements)

References 19 publications

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“…These properties have been correlated with growth conditions and the nature of substrates. For these reasons, many research groups have shown a great interest in the development and study of this material by various deposition processes such as electrodeposition [9,10], spray pyrolysis [11], microwave heating [12,13] and chemical bath deposition [14][15][16][17][18]. Photoconducting studies on PbS thin films have also been investigated [19].…”

Section: Introductionmentioning

confidence: 99%

Preparation of nanocrystalline Cd-doped PbS thin films and their structural and optical properties

Rajathi¹,

Kirubavathi²,

Selvaraju³

2017

Journal of Taibah University for Science

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PbS and Cd-doped PbS nanocrystalline thin films prepared by the chemical bath deposition technique was deposited onto glass substrates at 80 • C. The aqueous solution containing Cd 2+ and Pb 2+ precursors was used to obtain good quality film deposits at optimized preparative parameters. The characterization of these films was performed using X-ray diffraction, optical absorption, photoluminescence properties, scanning electron microscopy and energy dispersive X-ray analyses to explore the properties of the PbS and Cd-doped PbS films. The prepared films were adherent to the substrate and well crystallized according to the cubic structure, which displayed a preferred orientation. According to the X-ray diffraction analysis, the crystallite size of the films decreased from 74 nm to 64 nm with increasing Cd doping. The optical properties were determined from ultraviolet-visible spectroscopy measurements in the absorbance energy range from 300-1200 nm. The UV-visible analysis shows that the band gap value of the PbS thin films increased from 2.12 eV to 2.65 eV by doping with Cd. Morphological analysis showed that the shape of the grains over the substrate surface was changed from a regular random orientation to an irregular shape with Cd doping. The energy dispersive X-ray analysis showed that the film contains Cd, Pb and S elements without any other impurities.

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Section: Introductionmentioning

confidence: 99%

Preparation of nanocrystalline Cd-doped PbS thin films and their structural and optical properties

Rajathi¹,

Kirubavathi²,

Selvaraju³

2017

Journal of Taibah University for Science

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“…These two properties make PbS very suitable for in farad detection and solar cell applications [4]. A number of techniques have been used by various authors to deposit PbS thin films including evaporation [5], photoaccelerated chemical deposition [6], chemical bath deposition [7] and chemical spray pyrolysis [8]. Among these different techniques, spray technique is advantageous on account of the low cost and its suitability for forming large area thin films.…”

Section: Introductionmentioning

confidence: 99%

Effect of Aqueous Solution Molarity on the Structural and Electrical Properties of Spray Pyrolysed Lead Sulfide (PbS) Thin Films

Faraj

2015

ILCPA

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ABSTRACT. Lead sulfide (PbS) thin films of different molarities (0.05 M, 0.075 M and 0.1 M) were prepared on glass substrates at 325 0 C by chemical spray pyrolysis (CSP) technique. X-ray diffraction patterns confirm the proper phase formation of the PbS. The X-ray diffraction patterns' results reveal that the all of PbS films have a face centered cubic structure with preferential reflection of (200) plane. The crystallite grain size was calculated using Scherrer formula and it is found that the 0.1M has maximum crystallite grain size (37.4 nm). Depending on the molarity, Hall measurement showed that the electrical resistivity and mobility at room temperature varied in the range 6.3x10 3 Ω.cm to 2.1x10 3 Ω.cm and 4.79cm 2 /V.S to 24.3 cm 2 /V.S.

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“…There are several chemical routes to fabricate semiconductor NCs in the form of powder or thin film [24][25][26][27][28]. Chemical bath deposition (CBD) is one such simple route to grow NCs and NCps [4,7,11,23,29,30].…”

Section: Introductionmentioning

confidence: 99%

Insight into co-operative growth of nearly monodispersive CdS nanocrystals embedded in polyvinyl pyrrolidone

et al. 2015

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Nanocomposites of CdS nanocrystals (NCs) embedded in a polyvinyl pyrrolidone are grown using onestep chemical bath deposition technique. While this method eliminates an additional step for the growth of NCs, it also leads to the formation of nearly monodispersive CdS NCs as indicated by absorption, reflection, and photoluminescence spectroscopy. Further, scanning electron microscopy, energy-dispersive spectroscopy, and transmission electron microscopic investigations reveal the formation of nearly monodispersive CdS NCs (*6 to 10 nm) embedded in PVP spheres of sizes *100 to 600 nm. Systematic study of variation in Cadmium acetate (Cd ion source), Thiourea (S ion source), PVP concentration, deposition time, and heating/cooling cycles elucidates the co-operative growth mechanism for CdS-PVP nanocomposite. The experimental observations of this study are corroborated with existing theoretical simulations for nanocomposite growth, which explicates that collapse of PVP into a sphere is crucial to inclusion of only nearly monodispersive CdS NCs. Important insights obtained from this work give control on the growth of nearly monodispersive CdS NCs embedded in PVP, using a simple and inexpensive growth technique.

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The study of lead sulphide films. VI. Influence of oxidants on the chemically deposited PbS thin films

Cited by 24 publications

References 19 publications

Preparation of nanocrystalline Cd-doped PbS thin films and their structural and optical properties

Preparation of nanocrystalline Cd-doped PbS thin films and their structural and optical properties

Effect of Aqueous Solution Molarity on the Structural and Electrical Properties of Spray Pyrolysed Lead Sulfide (PbS) Thin Films

Insight into co-operative growth of nearly monodispersive CdS nanocrystals embedded in polyvinyl pyrrolidone

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