We studied the scanning tunneling spectroscopy of n-type GaAs under laser irradiation. The negative surface photovoltage effects due to the laser irradiation were clearly observed in the differential conductance properties. The photosensitivities depend on the doping density, that is, a lower doped sample has a higher sensitivity. This dependence can be explained by the net surface charge density effect as well as by the carrier lifetime effect.
No takes yet. Share an insight, caveat, or question.
Takahashi et al. (1997) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: