Abstract
Electron mobility in ZnSe has been measured between 40° and 400°K. It is shown that through repeated annealing in liquid Zn the mobility maximum can be increased to 12 000 cm2/V sec. This is one of the highest mobilities measured for semiconductors with band gaps as wide as that of ZnSe (2.7 eV). The increase in mobility is mainly due to elimination of doubly charged acceptor states. The residual scattering is believed to be due, in part, to charged isolated impurities and, in part, to paired impurity dipoles.
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