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VOLUME 22 (1975) | ISSUE 11 | PAGE 578
Excited states of acceptors in gallium phosphide
The fine structure of photoexcitation spectra of acceptor centers in gallium phosphide has been observed for the first time. The exact values of the ionization energies of Cd, Zn, Mg, and Be have been determined. The results point to the need for determining more accurately the ionization energy of the indirect exciton in GaP.