Electrons in donor states of gallium oxide exhibit a paradoxical behavior. On the one hand they exhibit free electron properties such as impurity band conduction and motionally narrowed ESR signals at liquid helium temperature, while on the other hand they are responsible for a blue luminescence ch...
1 On the origin of red luminescence from iron-doped 𝛽-Ga 2 O 3 bulk crystals Rujun Sun 1* , Yu Kee Ooi 1* , Peter T. Dickens 3 , Kelvin G. Lynn 3 , Michael A. Scarpulla 1,2 1. Electrical and Computer Engineering, University of Utah, Salt Lake City, UT, 84112, USA 2. ...