Abstract
The optical absorption and reflectivity of single crystals of MgO and the optical absorption of thin films of MgO, both supported by a LiF substrate and unsupported, have been measured in the energy range from 6 ev to 13.5 ev. Absorption peaks due to impurities were observed at 6.0 ev, 6.3 ev, and 6.9 ev. The room-temperature fundamental absorption and reflectivity spectra are interpreted in terms of an exciton peak at 7.6 ev with a probable second peak at 8.8 ev. Some evidence is present for additional exciton structure on the low-energy side of the first peak. The width of the forbidden energy band in MgO is estimated to be about 8.7 ev. The effects of temperature and internal strains on the absorption spectra are discussed.
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.
