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Q#1
PN Junction Theory
GATE EC 2018
MCQ
+2 marks
-0.66 marks
Red (R), Green (G) and Blue (b) Light Emitting Diodes (LEDs) were fabricated using p-n junctions of three different inorganic semiconductors having different band-gaps. The built-in voltages of red, green and blue diodes are 
and
, respectively. Assume donor and acceptor doping to be the same (
and
, respectively) in the p and n sides of all the three diodes.
Which one of the following relationships about the built-in voltages is TRUE?
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