DIRECT CALCULATION OF OVERLAP INTEGRALS AND THE AUGER RECOMBINATION COEFFICIENT IN GAP

Non-umklapp overlap integrals are calculated for GaP via a k.p band structure approach. The results are presented in graphical form and are included in a calculation of the Auger recombination coefficient for the band-band hole-hole-electron process in GaP and 300K. The resulting value B 2=1.65*10-33 cm6 s-1, which compares favourably with recent approximation schemes, is taken to indicate that the process is not the dominant non-radiative recombination process at this temperature.