The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The optical band gap of hexagonal boron nitride (h‐BN) epitaxial film is investigated by means of transmittance and reflectance measurements. We grew the h‐BN epitaxial film on c‐plane sapphire substrate by metalorganic vaper phase epitaxy. X‐ray diffraction and reflection high‐energy electron diffraction reveal that the h‐BN epitaxial film has a smooth surface, and the epitaxial relationship is found...