Enhanced quantum yields and efficiency in a quantum dot photocell
modeled by a multi-level system
- URL: http://arxiv.org/abs/2402.15026v1
- Date: Thu, 22 Feb 2024 23:58:52 GMT
- Title: Enhanced quantum yields and efficiency in a quantum dot photocell
modeled by a multi-level system
- Authors: Shun-Cai Zhao, Jing-Yi Chen
- Abstract summary: We propose a quantum dot (QD) photocell modeled by multi-level system for the quantum yields and photo-to-charge efficiency limits.
The theoretical results show the quantum yields are enhanced as compared to the single band-gap solar cell.
- Score: 3.9638054120793207
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: To absorb the photons below the band-gap energy effectively, we proposed a
quantum dot (QD) photocell modeled by multi-level system for the quantum yields
and photo-to-charge efficiency limits. The theoretical results show the quantum
yields are enhanced as compared to the single band-gap solar cell, and the
photo-to-charge efficiencies are larger than Shockley and Queisser efficiency
in the same absorbed spectrum. What's more, at the room temperature the
efficiency limits are well beyond 63% achieved by Luque and Marti
(Ref\cite{26}) due to absorbing the low-energy photons via two sub-bands in
this proposed photocell system. The achievements may reveal a novel theoretical
approach to enhance the QD photocell performance modeled a multi-level
absorbing photons system.
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