Abstract
Although manganese oxide is a wide-band-gap dielectric with a band gap Eg ≃ 4 eV and, in the undoped state, is characterized by a high electrical resistivity, it has been found experimentally that there is a non-steady-state photoelectromotive force in dynamic space-charge gratings formed in MnO by light with a photon energy of 1.96 eV (λ = 633 nm). The dependences of the photoelectromotive force signal amplitude on the phase modulation frequency, light intensity, and spatial frequency of the interference pattern have been investigated. The unusual frequency dependence of the signal has been explained in terms of the two-level semiconductor model taking into account the presence of shallow traps in the crystal. The photoelectric parameters of the material have been determined.
Sign-in/Register to access full text options 
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.
