Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.
M. ABDEL RAFEA1,* , N. ROUSHDY1
PbS thin films were deposited by dip coating technique from lead acetate and thiourea in the reaction temperature range 100-200 oC. Nano structured PbS cubic phase was identified by XRD. Crystallite size of 4.8 nm was observed at lower reaction temperature and increased to 5.5 nm as the reaction temperature increases or by annealing at the same reaction temperature. Nano grains in the range 30-70 nm was observed by SEM. EDX analysis shows that the films composition are close to stiochiometric value for all deposited films. Optical absorption and dispersion were deduced from the transmittance curve only for films deposited with different thicknesses. Mathematical treatment was applied to calculate the optical parameters α, Eg, n and K. The absorption edge was shifted towards the visible region due to band gap increase due to strong confinement effect in nano structured system.
PbS, nanostructured films, Dip coating, Structural and optical properties.
M. ABDEL RAFEA, N. ROUSHDY, Structural and optical characterization of dip coated PbS nano-structured films prepared at different reaction temperatures, Optoelectronics and Advanced Materials - Rapid Communications, 3, 5, May 2009, pp.472-476 (2009).
Submitted at: May 19, 2009
Accepted at: May 25, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
Active accounts were imported to the new platform and assigned a random password by default. In order to access your account you need to access the login page and go through the Lost Password dialog (involves the system sending you an email with instructions) in order to reset your password. This step is necessary as passwords are kept in hashed form and the new platform uses modern hashing algorithms incompatible with the previous ones.