PROJECT TITLE :
Impact of carrier dynamics on the photovoltaic performance of quantum dot solar cells
ABSTRACT:
The study presents a theoretical investigation of the impact of individual electron and hole dynamics on the photovoltaic characteristics of InAs/GaAs quantum dot solar cells. The analysis is carried out by exploiting a model that includes a detailed description of quantum dots (QD) kinetics among a drift-diffusion formalism. Steady-state and transient simulations show that hole thermal spreading across the closely spaced QD valence band states allows to extract the most achievable photocurrent from the QDs; on the other hand, slow hole dynamics turns QDs into economical traps, impairing the short circuit current despite the extended light-weight harvesting provided by the QDs.
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