Enhanced photovoltaic output of flexible polyethylene vinylacetate film heterogenized by chalcogenide quantum dots

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy Pub Date : 2025-09-02 DOI:10.1016/j.solener.2025.113945

Le Cai , Kuihu Zhang , Aiying Chen , Huiqiang Zhang , Chen Hu , Suwei Zhang , Pengxin Wang , Xiaoyu Zhang , Ming Wen , Yunxiu Chao

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Abstract

A flexible composite film of ethylene vinyl acetate copolymer (EVA) containing chalcogenide quantum dots (PQDs) is developed, aiming to enhance photovoltaic efficiency by dual benefits of down-conversion effect of PQDs and solar panel cooling. Microstructural and optical characterizations by TEM, XPS, and PL spectroscopy exhibit that the PQDs/EVA film presents a transparent, flexible, durable, and stable fluorescence performances. The prepared PQDs/EVA film possesses an efficient UV-to-green light conversion and over 90 % visible light transmittance. Compared to pure EVA, the PQDs/EVA film with 4 % PQD content boosts photocurrent by 4 % and reduces surface temperature of solar panel by 3°C under one sun intensity. These performances stem from the down-conversion of UV to green light, which matches with the absorption band of silicon cell, and reduction of the surface working temperature of the solar panel. These works demonstrate the potential of PQDs/EVA film as a scalable solution to improve the solar cell performance.

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硫系量子点异质化柔性聚乙烯醋酸酯薄膜增强光伏输出

研制了一种含硫系量子点（PQDs）的乙烯醋酸乙烯共聚物（EVA）柔性复合薄膜，旨在利用PQDs的下转换效应和太阳能电池板冷却的双重效益来提高光伏效率。TEM、XPS和PL光谱的微观结构和光学特性表明，PQDs/EVA薄膜具有透明、柔韧、耐用和稳定的荧光性能。所制备的PQDs/EVA薄膜具有高效的uv -绿光转换和超过90%的可见光透过率。与纯EVA相比，PQD含量为4%的PQDs/EVA薄膜在一个太阳强度下光电流提高4%，太阳能电池板表面温度降低3℃。这些性能源于紫外光向绿光的下转换，与硅电池的吸收带相匹配，以及太阳能电池板表面工作温度的降低。这些工作证明了PQDs/EVA薄膜作为提高太阳能电池性能的可扩展解决方案的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Solar Energy 工程技术-能源与燃料

CiteScore

13.90

自引率

9.00%

发文量

审稿时长

47 days

期刊介绍： Solar Energy welcomes manuscripts presenting information not previously published in journals on any aspect of solar energy research, development, application, measurement or policy. The term "solar energy" in this context includes the indirect uses such as wind energy and biomass