PERFECCIONAMIENTOS EN DISPOSITIVOS PARA LA CONVERSION DIREC-TA DE RADIACION ELECTROMAGNETICA A CORRIENTE ELECTRICA

摘要

Electromagnetic energy may be converted directly into electrical energy by a device comprising a sandwich of at least two semiconductor portions, each portion having a p-n junction with a characteristic energy gap, and the portions lattice matched to one another by an intervening superlattice structure. This superlattice acts to block propagation into the next deposited portion of those dislocation defects which can form due to lattice mismatch between adjacent portions.