DIAGNOSTICS OF GaAs LIGHT EMITTING DIODE PN JUNCTIONS

摘要

Tracing the bi-stable mechanism of reverse-biased junction conductivity can be used as an efficient tool to study PN junction inhomegeneities. This conductivity mechanism is usually accounted for in terms of crystalline lattice imperfections, dislocations, or metallic precipitates in the PN junction region. Two methods have been suggested for practical application: first, a tentative method to distinguish between the bi-stable and the multi-stable conductivity mechanism, and, second, a noise current rms value versus DC current plot based method.