What consequence do you expect in a p-n junction solar cell when the device temperature is...
What consequence do you expect in a p-n junction solar cell when
the device temperature is increased
and the direct electron excitation over the band gap becomes
significant? Chose one from the
following:
(i) The efficiency is enhanced by the direct thermal excitation of
electrons.
(ii) The efficiency of the device is unaffected by the direct
thermal excitation of electrons.
(iii) The device fails to work as a solar cell because of the
direct thermal excitation of electrons.
Homework Answers
The efficiency of the device is unaffected by the direct thermal excitation of electrons.
Because It depends on light intensity or intensity of photons.
Add Answer to:
What consequence do you expect in a p-n junction solar cell when
the device temperature is...
6. Which best describes how a p-n junction operates as a solar cell? a. Incoming photons heat up the semiconductor, thu...
6. Which best describes how a p-n junction operates as a solar cell? a. Incoming photons heat up the semiconductor, thus promoting electrons into the conduction band, leaving behind a hole in the valence band. The junction E-field pushes the electron and hole in opposite directions causing a current to flow. b. Incoming photons are absorbed by an electron near the junction, promoting it from the valence band to the conduction band and leaving behind a hole in the valence...
9. An n- type germanium semiconductor sample is brought into contact with a p - type...
9. An n- type germanium semiconductor sample is brought into contact with a p - type silicon sample. The germanium sample has a carrier concentra- tion of 4.5 x 1016cm-3 and the silicon sample has a carrier concentration of 1.0 × 1016cm-3. At 300K the intrinsic carrier concentration of germanium is 2.4 × 1013cm-3 and its band gap is 0.66 eV. At 300K the intrinsic carrier concentration of silicon is 1.45 × 1010cm-3 and its band gap is 1.12 eV....
5) A Si solar cell with junction cross sectional dimensions 2 cm ×2 cmis formed with Na 1018 cm3 on the p side and Nd 1018cm3 on the n side. It is operated at a temperature of 300 K and τn-tp-1 μ. a)...
5) A Si solar cell with junction cross sectional dimensions 2 cm ×2 cmis formed with Na 1018 cm3 on the p side and Nd 1018cm3 on the n side. It is operated at a temperature of 300 K and τn-tp-1 μ. a) Using the mobilities on the equation sheet, calculate the dark saturation current. b) An intrinsic region of thickness 200 μm is sandwiched between the p and n regions in order to enhance the active volume of the...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
6. Which best describes how a p-n junction operates as a solar cell? a. Incoming photons heat up the semiconductor, thus promoting electrons into the conduction band, leaving behind a hole in the valence band. The junction E-field pushes the electron and hole in opposite directions causing a current to flow. b. Incoming photons are absorbed by an electron near the junction, promoting it from the valence band to the conduction band and leaving behind a hole in the valence...
9. An n- type germanium semiconductor sample is brought into contact with a p - type silicon sample. The germanium sample has a carrier concentra- tion of 4.5 x 1016cm-3 and the silicon sample has a carrier concentration of 1.0 × 1016cm-3. At 300K the intrinsic carrier concentration of germanium is 2.4 × 1013cm-3 and its band gap is 0.66 eV. At 300K the intrinsic carrier concentration of silicon is 1.45 × 1010cm-3 and its band gap is 1.12 eV....
5) A Si solar cell with junction cross sectional dimensions 2 cm ×2 cmis formed with Na 1018 cm3 on the p side and Nd 1018cm3 on the n side. It is operated at a temperature of 300 K and τn-tp-1 μ. a) Using the mobilities on the equation sheet, calculate the dark saturation current. b) An intrinsic region of thickness 200 μm is sandwiched between the p and n regions in order to enhance the active volume of the...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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