Answer questions below: Transport in semiconductors can occur unde...
Question
Answer questions below:
Transport in semiconductors can occur under numerous different mechanisms.
The challenge in Materials Science and Engineering is to optimize the inter-connected properties in order to maximize desired functionality.
Describe materials considerations discussed by Kramer and Sargent for each of the following situations:
Absorption of light and extraction of photocharges
Variable-sized materials
Electronic traps (mobility and recombination)
Doping
Interfaces with electrodes
Describe the limitations and new materials insights gained by the community from CQD-sensitized to Schottky to Depleted heterojunction devices.
Describe the roll of ligands on the electronic and device properties.
What are the major limitations in tandem cells?
Transport in semiconductors can occur under numerous different mechanisms.
The challenge in Materials Science and Engineering is to optimize the inter-connected properties in order to maximize desired functionality.
Describe materials considerations discussed by Kramer and Sargent for each of the following situations:
Absorption of light and extraction of photocharges
Variable-sized materials
Electronic traps (mobility and recombination)
Doping
Interfaces with electrodes
Describe the limitations and new materials insights gained by the community from CQD-sensitized to Schottky to Depleted heterojunction devices.
Describe the roll of ligands on the electronic and device properties.
What are the major limitations in tandem cells?
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Material consideration. Absorption of light and extraction of photocharges
Once a photon enters into a solar cell (made up of a p-n junction) it can generate a pair of electron-hole carriers. This pair will be then spatially separated by the internal electric field of the junction. Therefore to reach a contact (on a side of the solar cell) a carrier will need to travel all the depletion region length and also to diffuse then through all the neutral region length.
Once a photon enters into a solar cell (made up of a p-n junction) it can generate a pair of electron-hole carriers. This pair will be then spatially separated by the internal electric field of the junction. Therefore to reach a contact (on a side of the solar cell) a carrier will need to travel all the depletion region length and also to diffuse then through all the neutral region length.
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