CURRENT FILAMENTS IN SEMICONDUCTORS

Review of work that has been carried out on double-injection current filaments, emphasizing similar observations in direct- energy-gap semiconductor, gallium arsenide and indirect- gap semiconductor, silicon; experimental observations of current filaments occurring in low-current region, where current increases at constant voltage, and in high-current power- law region; simplified theory that considers current distribution of filament, and characteristic curve in high-current power- law region.