In the present study, a dual-functional smart film combining the effects of wavelength conversion and amplification of the converted wave by the localized surface plasmon resonance has been investigated for a perovskite solar cell. This dual-functional film, composed of Au nanoparticles coated on the surface of Y₂O₃:Eu³⁺ phosphor (Au@Y₂O₃:Eu³⁺) nanoparticle monolayer, enhances the solar energy conversion efficiency to electrical energy and long-term stability of photovoltaic cells. Coupling between the Y₂O₃:Eu³⁺ phosphor monolayer and ultraviolet solar light induces the latter to be converted into visible light with a quantum yield above 80%. Concurrently, the Au nanoparticle monolayer on the phosphor nanoparticle monolayer amplifies the converted visible light by up to 170%. This synergy leads to an increased solar light energy conversion efficiency of perovskite solar cells. Simultaneously, the dual-function film suppresses the photodegradation of perovskite by UV light, resulting in long-term stability. Introducing the hybrid smart Au@Y₂O₃:Eu³⁺ film in perovskite solar cells increases their overall solar-to-electrical energy conversion efficiency to 16.1% and enhances long-term stability, as compared to the value of 15.2% for standard perovskite solar cells. The synergism between the wavelength conversion effect of the phosphor nanoparticle monolayer and the wave amplification by the localized surface plasmon resonance of the Au nanoparticle monolayer in a perovskite solar cell is comparatively investigated, providing a viable strategy of broadening the solar spectrum utilization.

中文翻译：

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具有双重功能的Au @ Y2O3：Eu3 +智能薄膜，可增强钙钛矿型太阳能电池的功率转换效率和长期稳定性。

在本研究中，已经针对钙钛矿型太阳能电池研究了一种双功能智能薄膜，该薄膜结合了波长转换和通过局部表面等离子体激元共振对转换波进行放大的作用。这种双功能膜由涂覆在Y ₂ O ₃：Eu ³⁺荧光粉（Au @ Y ₂ O ₃：Eu ³⁺）纳米颗粒单层表面上的Au纳米颗粒组成，可提高太阳能转化为电能的效率，并延长光伏电池的长期稳定性。Y ₂ O ₃：Eu ³⁺之间的耦合荧光粉单层和紫外线太阳光可将后者转换为可见光，其量子产率高于80％。同时，荧光体纳米颗粒单层上的金纳米颗粒单层将转换后的可见光放大多达170％。这种协同作用导致钙钛矿太阳能电池的太阳能转换效率提高。同时，该双功能膜抑制了钙钛矿因紫外线而发生的光降解，从而具有长期稳定性。引入混合智能Au @ Y ₂ O ₃：Eu ³⁺与标准钙钛矿太阳能电池的15.2％相比，钙钛矿太阳能电池的薄膜将其整体的太阳能转化为电能的效率提高到16.1％，并提高了长期稳定性。比较研究了钙钛矿型太阳能电池中磷光体纳米颗粒单层的波长转换效应与金纳米颗粒单层的局部表面等离子体共振引起的波放大之间的协同作用，为拓宽太阳光谱利用提供了可行的策略。