构建钙钛矿激光功率转换器微腔：理论研究,Physica Status Solidi (A) - Applications and Materials Science

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构建钙钛矿激光功率转换器微腔：理论研究
Physica Status Solidi (A) - Applications and Materials Science Pub Date : 2022-10-12 , DOI: 10.1002/pssa.202200539
Guoyu Ding _{1,

2} , Yifan Zheng _{1,

2} , Qingyuan Li ₃ , Guodong Zhang _{1,

2} , Xin Guo ₁ , Haonan Wang ₁ , Xun Xiao ₄ , Yaomiao Feng _{1,

5,

6} , Yang Bai _{5,

6} , Yuchuan Shao _{1,

2}

Affiliation

用于无线能量传输的激光功率转换器（LPC）可实现极端条件下的非接触式供电，为无人探测器提供源源不断的能量支持，有望在深海探索中发挥重要作用。然而，由于其工业成熟度，商用 LPC 通常采用 III-V 族半导体作为光吸收器。为了匹配水下450∼540 nm激光源，需要采用外延生长的方法来调整材料的带隙，成本高昂，严重制约了LPCs的大规模工业化制备。在此，通过构建MAPbBr _{3从理论上展示了钙钛矿在水下LPC应用中的潜力}证明了 LPC 及其 48.55% 的理论功率转换效率 (PCE)。此外，提出了一种进一步提高器件性能的微腔 (MC) 构造策略，其中将传输矩阵方法和基于导纳的抗反射条件方法相结合用于光学模拟。通过调制MC条件，实现了器件内部显着的光学共振，同时避免了明显的光反射。因此，MC LPCs 可以获得 64.27% 的模拟 PCE，这与现有的 UV-vis LPCs 具有很强的竞争力。

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Constructing Microcavity for Perovskite Laser Power Converter: A Theoretical Study

Laser power converters (LPCs) used in wireless energy transmission can realize noncontact power supply under extreme conditions and provide continuous energy support to unmanned probes, which is believed to play an essential role in the exploration of deep ocean. However, commercially available LPCs usually employ III–V semiconductors as light absorbers due to their industrial maturity. In order to match the underwater 450∼540 nm laser source, it requires an epitaxial growth method to tune the bandgap of those materials, which is highly costly that severely restricts the industrial preparation of LPCs on a large scale. Herein, the potential of perovskite in the application of underwater LPCs is presented theoretically by constructing MAPbBr₃ LPC and its theoretical power conversion efficiency (PCE) of 48.55% is demonstrated. Moreover, a microcavity (MC) constructing strategy to further improve the device performance is proposed, in which the transfer matrix method and an admittance-based antireflection condition approach are combined for the optical simulation. By modulating the MC condition, the significant optical resonance inside the device while avoiding the obvious light reflection is realized. As a result, MC LPCs can obtain a simulated PCE of 64.27%, which is highly competitive with the existing UV–vis LPCs.

更新日期：2022-10-12

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