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Studies on Lead Sulfide (PbS) Semiconducting Thin Films Deposited from Nanoparticles and Its NLO Application

T. S. Shyju

Centre for Nanoscience and Nanotechnology, Sathyabama University, Chennai 600 119, India

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S. Anandhi

Department of Physics, Maamallan Institute of Technology, Sriperumpudur 602 105, India

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R. Sivakumar

Directorate of Distance Education, Alagappa University, Karaikudi 630 003, India

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, and

R. Gopalakrishnan

Crystal Research Lab, Department of Physics, Anna University, Chennai 600 025, India

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https://doi.org/10.1142/S0219581X1450001XCited by:21 (Source: Crossref)

Abstract

Nanoparticle Lead sulfide was synthesized via simple chemical method and deposited on glass substrates at different substrate temperatures by thermal evaporation technique. The synthesized nanoparticle PbS was analyzed and confirmed by X-ray diffraction (XRD), Scanning electron microscopy SEM with EDX and thermogravimetry. The structural, optical, morphological and electrical properties of the deposited films were studied using XRD, UV-Vis, Raman, SEM with EDX, atomicforce microscopy AFM and Hall Effect measurements. The thickness of the deposited samples was measured using thickness profilometer. The Raman shift in the peak occurs toward lower energy with increasing substrate temperature deposited lead sulfide. The Z-scan study with open aperture was carried out at 532 nm using 5 ns laser pulse on the deposited films which shows that nonlinear absorption arises from saturable absorption process. The deposited PbS film exhibits p-type conductivity in Hall measurement.

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