Question

asap please

Exam 2 EO Systems Name ask any questions about the exam. Make changes to the questions if you fel there is an error and state your reason for making the change. Raise your hand for another sheet of paper or to excuse yourself to the restroom. All exams will be scanned before and after grading. Look at the value of the questions. Work quickly and give brief explanations and answers (15%) p/n junction: If instead of a metallurgical junction at x" defects existed at x, then how might the electrons moving from x,- x or x, + x be affected? OR D or LASER operates. (Alt 1596) Using pictures words and formulas, explain how a PV device, LE

Answer 1

device tat converts ekchical enagy fnlo light It is an ephcal Senicoaluctbr dece that cts light uöhen votoge is applied Constsucton -The Construction of LEt s Six lar to the homnlp_h づunction dice excerttot gallium,thc,prous ard axkenic natesials ucedfor Canstrnction instead o Sfticn Silicon +A Light Eitting iok censists ot hec lrs thpe Semi fhstans o o oVaencebae

tohen LEb is m-stde and the hdes from P-sde are pushed tounds e jurctar when free elechons retejunction or deple hion vejion elechons recombine with the hdes ome O ín the posive lons AThus tree cleckens recembire oith the hdes in the in the depllion vegim The tree elechns in the Conducn baecombine an behaves as ofSuttch CNo Conduetin "The efficiency et Light in Lebine ases with incyease in injected Ccrt&th a de cease iv empexakure Diatol used n
LED CIRCUIT SYMBOL IS SHOWN BELOW

LED symbol