Thermally induced surface and bulk electrical effects in semiconducting Ge15 Te80As5 glasses

摘要

Electrical, thermal, and structural studies of bulk Ge15Te80As5 glasses show that formation of thermally induced conductive surface layers is associated with surface‐nucleated crystalline Te. Both crystallization and the associated electrically conductive regions extend into the bulk material with annealing. A metalliclike conductivity behavior may result from crystalline GeTe, which is a second‐stage crystallization product.