含三个电子给体的量子光电池中受抑制的辐射复合速率
The suppressed radiative recombination rate in a quantum photocell with three electron donors
AI总结：
该研究针对量子光电池中电子-空穴对辐射复合影响转换效率的问题，探究含三个耦合/非耦合电子给体的量子光电池的辐射复合速率抑制方法，明确了温度、能隙、耦合强度的影响规律，为提升光子-电荷转换效率提供了新思路。
摘要：
电子-空穴对的辐射复合是光电池光子-电荷转换效率面临的一大挑战。本文研究了在一种提出的含三个偶极-偶极耦合与非耦合电子给体的量子光电池中，如何抑制辐射复合速率（RRR）。结果表明，环境温度下，该光电池在三个非耦合电子给体的情况下RRR可被抑制，而在三个偶极-偶极耦合电子给体的情况下RRR会被增强；同时，给体能隙的增大、给体与受体之间能隙的减小，在三个电子给体为偶极-偶极耦合和非耦合的两种情况下均会抑制RRR。当在室温下通过静电偶极-偶极耦合强度J调控光电池时，给体与受体之间的能隙比不同的给体能隙能将RRR抑制到更低的最小值。这些RRR抑制策略为提高光子-电荷转换效率指出了重要途径，值得进一步的实验验证。
英文摘要：
The radiative recombination of electron-hole pairs represents a great challenge to the photon-to-charge efficiency in the photocell. In this paper, we investigate how to suppress radiative recombination rate (RRR) in a proposed quantum photocell with three dipole-dipole coupled and uncoupled electron donors. The results showed that the RRR could be suppressed in this photocell with three uncoupled electron donors but be enhanced with three dipole-dipole coupled electron donors by the ambient circumstance temperatures, and the increasing energy gap in the donors, the decreasing gap between the donors and acceptor inhabited the RRR with three dipole-dipole both coupled and uncoupled electron donors. When the photocell was manipulated by the electrostatic dipole-dipole coupling strength J at room temperature, the RRR was suppressed to a smaller minimum by the gap between the donors and acceptor than those by different gaps in the donors. These suppressed strategies for RRR point out some significant ways to increase the photon-to-charge efficiency and deserve the further experimental verification.
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