Cu-doped nanocrystal carbon dots for integrated fabrication of ultrabright luminescent solar concentrators

IF 7.9 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability Pub Date : 2025-09-29 DOI:10.1016/j.mtsust.2025.101230

Mahnoor Hassan , Kassa Belay Ibrahim , Jodi Gobbo , Shujie You , Enrico Ercolini , Enrico Trave , Margherita Zavelani-Rossi , Edoardo Carraro , Andrea Iudica , Paolo Moras , Mario Leopoldo Rivera-Salazar , Stephanie Bruyere , David Horwat , Alberto Vomiero , Elisa Moretti , Tofik Ahmed Shifa

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引用次数: 0

Abstract

Carbon dots (CDs) are promising fluorophores for optoelectronic devices. Yet, achieving CDs with high solid-state photoluminescence quantum yields (PLQYs) remains a significant challenge. The development of metal-doped carbon dots (CDs) to effectively modulate their electronic properties and surface chemical reactivities is still in its early stages. This work introduces copper-doping to CDs (Cu-CDs) luminescent material to modify the optoelectronic properties of CDs. The as-synthesized CDs show a Stokes shift of ≈0.67 eV and high PLQYs of 62 %. The Cu-CDs show the highest power conversion efficiency of 2.36 % compared to CDs (2.04 %) with a Stokes shift of 0.71 eV. These findings demonstrate the possibility of tuning optical properties into CDs via metal doping, obtaining eco-friendly, high-efficiency LSCs through scalable production techniques, paving the way to the lab-to-fab transition of this kind of device. Our results demonstrate that dual-emission Cu-CDs with strong solid-state fluorescence are promising candidates as luminophores in efficient photovoltaic devices.

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用于集成制造超亮太阳能聚光器的掺铜纳米晶碳点

碳点（cd）是光电子器件中很有前途的荧光团。然而，实现具有高固态光致发光量子产率（PLQYs）的CDs仍然是一个重大挑战。利用金属掺杂碳点（CDs）来有效调节其电子特性和表面化学反应活性的研究仍处于早期阶段。本文将铜掺杂到CDs （Cu-CDs）发光材料中，以改变CDs的光电性能。合成的CDs显示出≈0.67 eV的Stokes位移和62%的高plqy。Cu-CDs的功率转换效率最高，为2.36%，Stokes位移为0.71 eV，高于CDs（2.04%）。这些发现证明了通过金属掺杂调整CDs光学特性的可能性，通过可扩展的生产技术获得环保、高效的LSCs，为这种设备从实验室到工厂的过渡铺平了道路。我们的研究结果表明，具有强固态荧光的双发射Cu-CDs是高效光伏器件中有前途的发光团。

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

Materials Today Sustainability Multiple-

CiteScore

5.80

自引率

6.40%

发文量

174

审稿时长

32 days

期刊介绍： Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science. With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.