Enhanced visible light harvesting in dye-sensitized solar cells through incorporation of solution-processable silver plasmons and anthracite-derived graphene quantum dots

IF 10 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Today Physics Pub Date : 2024-07-14 DOI:10.1016/j.mtphys.2024.101512

Akshatha A. Rao, Santhosh Narendhiran, Manoj Balachandran

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Abstract

The major setback for the enhanced performance of DSSC is the narrow absorption window and the interfacial exciton recombination. Therefore, in this work, the photovoltaic performance of dye-sensitized solar cells has been improved by the synergistic effect of anthracite-derived graphene quantum dots and silver plasmons. GQD and Ag coupled photoanodes were fabricated by a facile solution processable process under room temperature. The as-fabricated DSSC TiO₂/Ag/GQD (TAG) exhibited an enhanced power conversion efficiency of 10.5 % with a current density of 22.40 mAcm⁻² measured under solar irradiation of 100 mWcm⁻² with AM 1.5G. An enhancement surpassing 30.5 % was obtained for the champion cell when compared to the pristine TiO₂ based DSSC. Furthermore, this study emphasizes developing a cutting-edge approach for the high-quality use of fossil fuel-derived graphene quantum dots in energy conversion systems, thereby encouraging the green conversion of fossil fuels and broadening the potential of anthracite coal's utilization in energy conversion applications.

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通过在染料敏化太阳能电池中加入溶液可加工银质子和无烟煤衍生石墨烯量子点，增强可见光收集能力

提高染料敏化太阳能电池性能的主要障碍是狭窄的吸收窗口和界面激子重组。因此，在这项工作中，通过无烟煤衍生的石墨烯量子点和银质子的协同效应，提高了染料敏化太阳能电池的光伏性能。GQD 和银耦合光阳极是在室温下通过简便的溶液加工工艺制作的。所制造的 DSSC TiO2/Ag/GQD (TAG) 在 AM 1.5G 的 100 mWcm-2 太阳辐照下，电流密度为 22.40 mAcm-2，功率转换效率提高了 10.5%。与基于原始 TiO2 的 DSSC 相比，冠军电池的功率转换效率提高了 30.5%。此外，本研究还强调了在能源转换系统中高质量使用化石燃料衍生石墨烯量子点的前沿方法，从而鼓励化石燃料的绿色转换，并拓宽无烟煤在能源转换应用中的利用潜力。

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来源期刊

Materials Today Physics Materials Science-General Materials Science

CiteScore

14.00

自引率

7.80%

发文量

284

审稿时长

15 days

期刊介绍： Materials Today Physics is a multi-disciplinary journal focused on the physics of materials, encompassing both the physical properties and materials synthesis. Operating at the interface of physics and materials science, this journal covers one of the largest and most dynamic fields within physical science. The forefront research in materials physics is driving advancements in new materials, uncovering new physics, and fostering novel applications at an unprecedented pace.