Preparation and Characterization of Nanocrystalline PbS Thin Films Produced by Chemical Bath Deposition

• Authors: F. Göde , F. Yavuz , İ. Kariper
• Languages of publication: EN

Abstracts

EN

Lead sulfide thin films are deposited on glass substrates at room temperature for 2 h by chemical bath deposition. The structure, surface morphology, optical and electrical properties of the thin films are characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, optical absorption spectroscopy and the Hall effect measurements. The obtained films show the formation of well crystallized PbS with a cubic rock salt structure and with the preferential orientation (111) plane. The lattice parameter and crystallite size of the films are found as a=600 Å and 62 nm from the X-ray reflectivity data from the atomic force microscopy image, respectively. The band gap width of the films is determined as 2.84 eV. The optical parameters of the films such as refractive index, extinction coefficient, real and imaginary parts of dielectric constant are evaluated. Moreover, from the Hall measurements, electrical resistivity, conductivity carrier mobility, and carrier concentration of the films are determined as 3.722 Ω m, 0.268 Ω¯¹ m¯¹, 8.486× 10¯¹ m² V¯¹ s¯¹, and 1.976× 10^{18} m^{-3}, respectively.

Keywords

EN

68.37.Ps; 68.55.-a; 78.20.-e; 73.61.Ga

Discipline

• 68.37.Ps: Atomic force microscopy (AFM)
• 78.20.-e: Optical properties of bulk materials and thin films(for optical properties related to materials treatment, see 81.40.Tv; for optical materials, see 42.70-a; for optical properties of superconductors, see 74.25.Gz; for optical properties of rocks and minerals, see 91.60.Mk; for optical properties of specific thin films, see 78.66.-w)
• 73.61.Ga: II-VI semiconductors
• 68.55.-a: Thin film structure and morphology(for methods of thin film deposition, film growth and epitaxy, see 81.15.-z)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 128
• Issue: 2B
• Pages: B-215-B-218

Dates

published

2015-8

Contributors

author

F. Göde

• Mehmet Akif Ersoy University, Physics Department, Burdur, Turkey

author

F. Yavuz

• Mehmet Akif Ersoy University, Physics Department, Burdur, Turkey

author

İ. Kariper

• Erciyes University, Primary Education Department, Kayseri, Turkey

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Identifiers

DOI

10.12693/APhysPolA.128.B-215