Jj. Lappe et al., ELECTRON-NUCLEAR DOUBLE-RESONANCE OF CHALCOGEN DONORS IN GAP REVISITED, Semiconductor science and technology, 8(8), 1993, pp. 1626-1633
Using electron nuclear double resonance (ENDOR) of GaP crystals contai
ning shallow S donors it was shown that the ENDOR spectra previously d
etected optically in the two infrared photoluminescence bands assigned
to oxygen in oxygen-doped GaP are indeed due to S donors which must h
ave been present simultaneously in those crystals. Furthermore it is s
hown that the results of the published ENDOR investigations of both S
and Te donors in GaP must be revised, Finally the measured ligand hype
rfine interaction of S and Te donors are discussed within the frame of
effective mass theory.