Step Graded Diode / Abrupt. PN Junction diode: → Designed with Abrupt junction 4- ptn junction diode ΟΥ PN+ diode Faster than normal diode Depletion layere will penetrate more into the lightly doped region and lesser into highere doped region →Considering P'N junction diode. NA > NA WP WN WN > WP W = WN +Wp If PTN junction diode tos now reverse bias then W= (+) Vi metres. NA N NA → large NA → small Width of the depletion layer on the lightly doped side lies WWN REVI metres The junction voltage Vi in ustep Graded diode ie. ptn is NAW volts The junction voltage formula formula for any type of is a universal PN junction. Considering PNt junction diode. WN NO NA WP > WN • W = WN+Wp W= 26- metres If PN Junction diode ins Reverse blas. No Large smaller Width of the depletion layer on the eightly doped side is W Wp W20V -> The junction voltage Vj 1.e. (PNT) in ustep grated drode V= &NA W² Volts NOTE:- → In a step graded drade layou will be region most of the deplett existing only in the lightly loped In ptn junction diode most of the depletioni layo exist in N.region. The ratio of depletion layer width on the P side and N-side can be directly obtained by charge equality equation VAWN NOVA WP N WNND= WP N Sketch Charge density dragram and freld intensity diagram of a ustep graded aliods Consider a PTN junction docto