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Diodes are frequently used as temperature sensors. An experiment is set up in the lab and 20% of the saturation current flows through a diode when a forward voltage of 4.75mV is applied across it. What is the temperature in the lab, assuming the diode and the environment are in thermal equilībrium? Use Eg. 2 to show that plotting

Diodes are frequently used as temperature sensors. An experiment is set up in the lab and 20% of the saturation current flows through a diode when a forward voltage of 4.75mV is applied across it. What is the temperature in the lab, assuming the diode and the environment are in thermal equilībrium? Use Eg. 2 to show that plotting

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Diodes are frequently used as temperature sensors. An experiment is set up in the lab and 20% of the saturation current flows through a diode when a forward voltage of 4.75mV is applied across it. What is the temperature in the lab, assuming the diode and the environment are in thermal equilibrium? Use Eq. 2 to show that plotting a graph of (3 In T – In ) vs. (T) will give a straight line, with a slope equal to Eg/k. You will use this result during the experiment. Draw the band structure for a typical p-n junction in no-bias, forward- and reverse-bias mode. Label the diagram appropriately Which configuration would you use for (a) a LED and (b) a solar cell? Give 1 key reason why.
Transcribed Image Text:Diodes are frequently used as temperature sensors. An experiment is set up in the lab and 20% of the saturation current flows through a diode when a forward voltage of 4.75mV is applied across it. What is the temperature in the lab, assuming the diode and the environment are in thermal equilibrium? Use Eq. 2 to show that plotting a graph of (3 In T – In ) vs. (T) will give a straight line, with a slope equal to Eg/k. You will use this result during the experiment. Draw the band structure for a typical p-n junction in no-bias, forward- and reverse-bias mode. Label the diagram appropriately Which configuration would you use for (a) a LED and (b) a solar cell? Give 1 key reason why.
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