Physicotechnological Methods of Increasing the Efficiency of Solar Cells Based on Monolithic Graded Band-Gap AlGaAs Heterostructures

摘要

Electrophysical and optical characteristics of AlGaAs structures are considered. The nature of defects has been studied, and the ways of their neutralization in photosensitive AlGaAs and GaAs layers under application of ultrasonic fields have been analyzed. It has been shown that the ultrasonic treatment changes the surface properties of p-Ga_(1-x)Al_xAs layers and leads to the smoothing of heterogeneities.