Strong enhancement of solar cell efficiency due to quantum dots with built-in charge.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 21545165.
- Also identified by DOI 10.1021/nl200543v.
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Abstract
We report a 50% increase in the power conversion efficiency of InAs/GaAs quantum dot solar cells due to n-doping of the interdot space. The n-doped device was compared with GaAs reference cell, undoped, and p-doped devices. We found that the quantum dots with built-in charge (Q-BIC) enhance electron intersubband quantum dot transitions, suppress fast electron capture processes, and preclude deterioration of the open circuit voltage in the n-doped structures. These factors lead to enhanced harvesting and efficient conversion of IR energy in the Q-BIC solar cells.
Medical subject headings
- Arsenicals
- Electric Power Supplies
- Gallium
- Indium
- Quantum Dots
- Solar Energy