Capa do livro de Characterization of CdxZn1-xS and PbS thin films for Photovoltaics
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Characterization of CdxZn1-xS and PbS thin films for Photovoltaics

Optical And Electrical Properties

LAP LAMBERT Academic Publishing (2013-06-17 )

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A study of CdZnS and PbS nano-crystalline thin films deposited by chemical bath deposition (CBD) method has been made using Four point probe for electrical sheet resistivity, UV-Vis spectroscopy and solar simulator for optical and Photovoltaic cell properties respectively. Sheet resistivity for CdZnS thin films was found to decrease as the concentration of Zn increased while PbS thin films had their sheet resistivity increase with increase in bath concentrations. Optical band gap for CdZnS had a tunability depending on the various Zn2+ concentrations used successfully as demonstrated by UV-VIS-NIR spectroscopy. Transmittance in CdxZn1-xS was found to be above 80%, optical band gap of 2.47 - 2.72 eV, refractive index of 2.58 – 2.39, and sheet resistivity of 1.09 – 1.36 × 102 Ω-cm for x = 1.0 – 0.6. The thin films were suitable for use as window films for optical devices. PbS films were good absorbers with a band gap of 0.88 eV and transmittance below 55%, Electrical resistivity varying from 6.78 × 103 to 1.26 × 104 Ω-cm, conductivity of 1.09 × 10-4 to 7.9 × 10-5 S-cm-1. The PbS films were suitable as absorber films for photovoltaic cell applications.
LAP LAMBERT Academic Publishing
Por (autor):
Cliff Orori Mosiori
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54.9 €
Palavras chave:
Simulation, characterization, Optical and electrical properties; Chemical Bath Deposition process; Sulphide; wavelength Band gap; Optical properties Models

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