gamma-MnS thin films prepared by chemical bath deposition: Effect of bath temperature on their physical properties


Ulutas C., GÜNERİ E., Kirmizigul F., Altindemir G., Gode F., GÜMÜŞ C.

MATERIALS CHEMISTRY AND PHYSICS, cilt.138, ss.817-822, 2013 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

gamma-MnS thin films were deposited on glass substrates by chemical bath deposition at different temperatures (27 degrees C, 40 degrees C and 70 degrees C). These films were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDX) and optical absorption spectra. The obtained films exhibit hexagonal structures through the (002) plane with a varied grain size of between 241 angstrom and 318 angstrom. The band gap energy is found to be in the range of 3.40-3.80 eV. Moreover, electrical conductivity and mobility of the films were determined from the room temperature Hall measurements, which show that the obtained films have n-type conductivity and electrical conductivity, and mobility values change in the range (4.3-9.9) x 10(-6) (Omega cm)(-1) and 80-350 cm(2) V-1 s(-1), respectively. The influence of the bath temperature on the structural, optical and electrical properties of gamma-MnS films was investigated and it was concluded that a growth temperature of 70 degrees C is suitable for producing gamma-MnS films by chemical bath deposition technique, and the properties found in these films show their feasibility for technological purposes, especially for solar cells. (C) 2013 Elsevier B.V. All rights reserved.