High quantum yields generated by a multi-band quantum dot photocell

We perform the quantum yields in a multi-band quantum dot (QD) photocell via doping an intermediate band (IB) between the conduction band (CB) and valence band (VB). Under two different sub-band gap layouts, the output power has a prominent enhancement than the single-band gap photocell and the achi...

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Bibliographic Details
Published in:arXiv.org 2024-02
Main Authors: Shun-Cai, Zhao, Qi-Xuan, Wu
Format: Article
Language:English
Subjects:
Charge efficiency
Conduction bands
Energy gap
Photovoltaic cells
Quantum dots
Solar cells
Valence band
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Summary:We perform the quantum yields in a multi-band quantum dot (QD) photocell via doping an intermediate band (IB) between the conduction band (CB) and valence band (VB). Under two different sub-band gap layouts, the output power has a prominent enhancement than the single-band gap photocell and the achieved peak photo-to-charge efficiency reaches to 74.9% as compared to the limit efficiency of 63.2% via the IB approach in the theoretical solar cell prototype. The achieved quantum yields reveal the potential to improve efficiency by some effective theoretical approaches in the QD-IB photocell.
ISSN:2331-8422
DOI:10.48550/arxiv.2402.06681