Photoluminescence of Mn2+‐Doped ZnGa2 O 4 Single‐Crystal Fibers

Abstract

Manganese‐doped zinc gallate is a new promising cathode ray phosphor material with low excitation voltage. On excitation of the host, we observed strong emission from both the self‐activated (SA) host material and tetrahedrally coordinated Mn2+ ions in single‐crystal fibers. The efficient host‐Mn2+ energy transfer makes this material an attractive candidate for display technology. The experimental results show that the SA center is not an intermediate involved in the host‐Mn2+ energy‐transfer process.