Structural characterization of chemically deposited PbS thin films

Fernandez‐Lima, Francisco; González-Alfaro, Y.; Larramendi, E. M.; Filho, Henrique Duarte da Fonseca; Costa, M.E.H. Maia da; Freire, F.L.; Prioli, R.; Avillez, Roberto R. de; Silveira, E.F. da; Calzadilla, O.; Melo, O. de; Pedrero, Enrique González; Hernández, Erasto Vergara

doi:10.1016/j.mseb.2006.09.029

Cited by 16 publications

(4 citation statements)

References 33 publications

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“…PbS thin films has direct optical bandgap that can be changed from 0.39 up to 5.20eV (Koao et al, 2014). PbS thin films have been deposited through various deposition processes such as electrodeposition (Osherov et al, 2007), spray pyrolysis (Rajashree et al, 2014;Thangaraju and Kaliannan, 2000), chemical bath deposition (Koao et al, 2014;Preetha et al, 2015;Garcia-Valenzuela et al, 2013;Fernandez-Lima et al, 2007), and successive ionic layer adsorption and reaction (Puiso et al, 2003;Gulen, 2014;Pawar et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Optical and structural properties of lead sulphide (PbS) thin films synthesized by chemical method

Ezekoye¹,

Emeakaroha²,

Ezekoye³

et al. 2015

Int. J. Phys. Sci.

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The influence of dip times on the lead sulphide (PbS) thin films deposited on glass slide substrates via chemical bath deposition (CBD) technique using chemical precursors, nitrate, and thiourea, ) in alkaline medium at 300 K was investigated. The optical, structural and morphological studies were performed by UV-vis spectophotometry, X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively. The XRD showed films of cubic (galena), crystalline in nature with the preferential (111) orientation. The optical studies showed films of direct band gaps in the range of 1.59-1.65 eV.

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Section: Introductionmentioning

confidence: 99%

Optical and structural properties of lead sulphide (PbS) thin films synthesized by chemical method

Ezekoye¹,

Emeakaroha²,

Ezekoye³

et al. 2015

Int. J. Phys. Sci.

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“…Lead sulfide (PbS) is an important semiconductor with a direct narrow band gap of 0.4 eV at 300 K and a relatively large excitation Bohr radius of 18 nm [6,7]. These properties make PbS very suitable for applications as photodetector for IR radiation [6] and other IR detection applications [7,[8][9][10][11][12][13][14][15]. The photoresponse depends on the grain size and the topography of the film [16].…”

Section: Introductionmentioning

confidence: 99%

“…A number of techniques have been used by various authors to deposit PbS thin films including spray * Correspondence: eyadom2003@yahoo.com pyrolysis [18], sol-gel [21], and chemical bath deposition [8,10,15,17,19]. Chemical bath deposition (CBD) was adopted in the present study.…”

Section: Introductionmentioning

confidence: 99%

Deposition and characterization of PbO--PbS multilayer thin films by solution growth technique

Eya¹

2014

Turk J Phys

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PbO-PbS thin films were deposited on glass substrates using the chemical bath deposition (CBD) technique.PbO thin films were deposited from the solution of lead nitrate (Pb(NO 3)2) and sodium hydroxide (NaOH). Ethylenediaminetetraacetate (EDTA) served as the complexing agent. Some of the PbO films were used as substrate for the deposition of PbS. The PbS was deposited from alkaline solution of lead nitrate and thioacetamide. Triethanolamine was used as the complexing agent. Some of the films were subjected to thermal treatment after deposition. Energy dispersive X-ray fluorescence analysis confirmed the presence of Pb and S in the PbS thin films, whileRutherford backscattering was used to identify the composition of PbO thin films.The absorbance of PbO-PbS films was extremely high in the UV region and decreased exponentially with increase in wavelength. The transmittance increased sharply but almost linearly with wavelength from the mid-vis region, having a maximum percentage value of 21% at 1000 nm (NIR). Hence, PbO-PbS films are good materials for UV filters and glazing for creating warmth in rooms.The band gap of PbO-PbS films is in range 2.15-2.25 eV.

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“…In addition, PbS has been utilized as photo resistance, diode lasers, humidity and temperature sensors, decorative and solar control coatings. These properties have been correlated with the growth conditions and the nature of substrates (Fern' andez-Lima et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Structural and Electrical Properties of Aluminium Doped Lead Sulphide (PbS) Thin Film Prepared by CBD Method

2013

J. Environ. Nanotechnol.

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We have deposited PbS and Al doped PbS thin films by chemical bath deposition. Lead acetate and thiourea were used as sources of Pb 2+ and S 2respectively. The films were deposited at a pH of 12.5. The deposited films were further annealed at three different temperatures 250 p C, 300 p C, 350 p C. The structural analysis reveals that PbS has a preferential growth at (200) planes and high crystalline PbS were obtained when the films were annealed at 300p C. Crystallite size for all the films varies from 30 to 50 nm. SEM analysis shows almost dense spherical and uniform grains were distributed upon the surface of the film. The Aluminium concentration were varied from (1,2,3 and 4 at %). The electrical conductivity of the Al doped PbS films increases upto to 3 at % and then it decreases at 4 at %. All films exhibits highly stable p-type behavior with maximum conductivity for 3% Al doped PbS films which is 13.32(cm)-1. Thereby it is concluded that 3% Al is the opimum concentration for the doping for PbS films and can be used for the application of IR detectors and sensors.

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Structural characterization of chemically deposited PbS thin films

Cited by 16 publications

References 33 publications

Optical and structural properties of lead sulphide (PbS) thin films synthesized by chemical method

Optical and structural properties of lead sulphide (PbS) thin films synthesized by chemical method

Deposition and characterization of PbO--PbS multilayer thin films by solution growth technique

Analysis of Structural and Electrical Properties of Aluminium Doped Lead Sulphide (PbS) Thin Film Prepared by CBD Method

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