The Spectral Response of PbS Films

Büger, P. A.; Malan, O. G.; Kunze, O. A.

doi:10.1515/zna-1971-1208

Cited by 4 publications

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“…The standard method used for preparing PbS films is the chemical bath deposition ͑CBD͒. [3][4][5][6] This method is less expensive, easy to handle, allowing the deposition of PbS films on a large area and on various substrates. The usual substrate for deposition is glass and electrical Ohmic contacts are made from vacuumevaporated gold, in coplanar configuration.…”

Section: Introductionmentioning

confidence: 99%

Field-effect-assisted photoconductivity in PbS films deposited on silicon dioxide

Pintilie

Pentia

Matei

et al. 2002

Journal of Applied Physics

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Cataloged from PDF version of article.Lead sulfide (PbS) thin films were deposited from a chemical bath onto SiO2/Si (n-type) substrates. Pseudo-metal-oxide-semiconductor devices were obtained by evaporating source and drain gold electrodes on a PbS surface and aluminum gate electrode on a Si substrate. Field-effect-assisted photoconductivity in the PbS layer was investigated at room temperature, in the 800-2700-nm-wavelength domain for different values and polarities of the drain and gate voltages. The best results were obtained for a positive gate, when both semiconductors are in depletion. An enhancement of about 25% of the photoconductive signal is obtained compared with the case when the gate electrode is absent or is not used. A simple model is proposed that explains the behavior of the dark current and photoconductive signal in PbS film with changing the gate voltage. (C) 2002 American Institute of Physics

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Section: Introductionmentioning

confidence: 99%