Method for Determining the Schottky Diodes Electrical Parameters

When studying the operation of Schottky diodes most important electrical parameters are height potential barrier, coefficient ideality, saturation current and series resistance material contacts. These can be determined from experimental volt-ampere characteristics. The article considers methods determining these diodes, as well factors that affect accuracy calculations. existing for calculating analyzed, namely: method Norde, Roderick, Chong, Sato direct approximation. Norde was developed a ideality equal to one cases where effect on I–V characteristics makes significant error in barrier by simpler methods. A disadvantage this is many not one, even case an ideal diode, which calculation result. advantage Roderick's possibility describing forward reverse branches dependence, taking into account measurements at voltages less than tripled temperature potential. disadvantages include lack consideration resistance, may result additional errors. main Chong determination together with only provides information about contact, but also convenient terms automation process. applying voltage range above approximation fact performed point curve, negatively accuracy. It shown have standard deviation calculated values ones, due dependence voltage. Also, reason increase all five decrease length logarithmic coordinates. using any considered methods, coordinates, complicates boundaries section, diode insignificant. new algorithm has been developed. Based conjugate gradient method, optimizing developed, made it possible reduce more order magnitude. verified comparing those obtained experimentally. To construct characteristics, were used, presented algorithm. results good agreement data. proposed used both scientific work study properties semiconductor materials, production control quality diodes.