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What are the demonstrated advantages of CdTe (2nd generation) technologies for solar cells?A. Low-cost potentialB. Take back and recycling of materials for further useC. High module efficiencies in reference to crystalline silicon wafer based modules

A. Only A
B. Only C
C. Both A and B
D. Both A and C

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In a CdTe solar cell

A. Light is mainly absorbed in the n-type CdS layer; this layer makes junction with the p-type CdTe layer.
B. Light is mainly absorbed in the n-type CdTe layer; this layer makes junction with the p-type CdS layer.
C. Light is mainly absorbed in the p-type CdS layer; this layer makes junction with the n-type CdTe layer.
D. Light is mainly absorbed in the p-type CdTe layer; this layer makes junction with the n-type CdS layer.

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The figure below depicts the band diagram of a CIGS solar cell. Light enters from the left part of the figure. Which are the corresponding materials A, B and C?

A is CdS, B is CIGS and C is ZnO
B. A is CIGS, B is CdS and C is ZnO
C. A is ZnO, B is CIGS and C is CdS
D. A is ZnO, B is CdS and C is CIGS

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The figure below shows the absorption coefficient \(\alpha\) for amorphous and crystalline silicon. The figure also displays the solar irradiance of the AM1.5 spectrum due to photons with wavelengths lower than \(\lambda\).Which percentage of the solar spectrum does an a-Si:H layer of 300 nm thickness absorb? Remember that the AM1.5 spectrum has a total irradiance of \(1000W/m^2\). Hint: You can assume that the layer absorbs all photons with wavelength lower than that at which \(\alpha=1/d\).How thick should a c-Si layer (in \(\mu m\)) be in order to absorb that amount of the solar spectrum? ______

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The figure below shows the absorption coefficient \(\alpha\) for amorphous and crystalline silicon. The figure also displays the solar irradiance of the AM1.5 spectrum due to photons with wavelengths lower than \(\lambda\).Which percentage of the solar spectrum does an a-Si:H layer of 300 nm thickness absorb? Remember that the AM1.5 spectrum has a total irradiance of \(1000W/m^2\). Hint: You can assume that the layer absorbs all photons with wavelength lower than that at which \(\alpha=1/d\). ______

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What are the demonstrated advantages of CdTe (2nd generation) technologies for solar cells?A. Low-cost potentialB. Take back and recycling of materials for further useC. High module efficiencies in reference to crystalline silicon wafer based modules

A. Only A B. Only C C. Both A and B D. Both A and C

In a CdTe solar cell

The figure below depicts the band diagram of a CIGS solar cell. Light enters from the left part of the figure. Which are the corresponding materials A, B and C?

A. Only A
B. Only C
C. Both A and B
D. Both A and C