Abstract
Ag 2S films were deposited chemically from silver nitrate and thiourea aqueous solutions at low temperature (40–80°C). X ray diffraction shows that the films are well crystallized with the acanthite structure. They display good optical properties with a direct band gap in the range 0.9-1.05 eV. These properties are improved by a thermal annealing treatment in nitrogen at 250°C for 1 h, with an increase in the band gap up to 1.07 eV. The effective mobility of carriers was measured by time-resolved microwave photoconductivity (TRMC). Values around 5–10 cm 2V −1s −1 were estimated. A dependence on the deposition temperature is shown, with an optimal value around 60°C.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
