The environmental pollution and growing energy demand necessitate the development of power generation using renewable energy systems, especially solar photovoltaic (PV) panels. Despite being an eco-friendly and durable power generation technology, PVs demerit for low conversion efficiency (15–20%). In other meaning, a very low amount of the incident irradiance is converted into electricity, whereas the major is absorbed as heat, uplifting the PVs' surface temperature and declining their efficiency and reliability. Therefore, it is crucial to find a proper cooling technique for upgrading PVs' performance. Recently, along with the nanotechnology development, nano-based PV cooling units have been proposed and investigated as the inclusion of nanoparticles enhances the thermal properties of base materials. Herein, in this paper, the conducted efforts to improve the PVs' performance using nano-based cooing systems were reviewed and discussed. The surveyed PVs' cooling methodologies were classified into separate and hybrid systems: nano-enhanced PCMs, nanofluid-based, and hybrid nano-based cooling units. All relevant equations of materials' properties and PV performance were presented. In addition, the research trend of this field was analyzed by conducting a comprehensive bibliometric analysis using VOSviewer software and based on the Scopus database in the period (2006–2020). Besides, comprehensive discussions of proposed and designed systems were conducted, and major findings were summarized. Based on the literature, using hybrid nano-based cooling systems, the surface temperature reduction can reach 16 °C with enhancement in electrical efficiency up to 50% compared to conventional uncooled PV panels. Furthermore, some future work suggestions were given.

环境污染和不断增长的能源需求迫使发展使用可再生能源系统的发电，尤其是太阳能光伏 (PV) 面板。尽管光伏发电是一种环保且耐用的发电技术，但其缺点是转换效率低（15-20%）。换句话说，极少量的入射辐照度被转化为电能，而大部分的入射辐照度被吸收为热量，从而提高了光伏的表面温度并降低了它们的效率和可靠性。因此，找到一种合适的冷却技术来提升光伏的性能至关重要。最近，随着纳米技术的发展，纳米光伏冷却装置被提出和研究，因为纳米粒子的加入提高了基材的热性能。在此，在本文中，审查和讨论了使用纳米冷却系统改善光伏性能的努力。被调查的 PV 的冷却方法分为单独的和混合的系统：纳米增强型 PCM、基于纳米流体和基于混合纳米的冷却单元。提出了材料性能和光伏性能的所有相关方程。此外，利用VOSviewer软件，基于Scopus数据库，对该领域（2006-2020年）进行了综合文献计量分析，分析了该领域的研究趋势。此外，还对提议和设计的系统进行了全面讨论，并总结了主要发现。根据文献，使用混合纳米冷却系统，与传统的非冷却光伏电池板相比，表面温度降低可达 16°C，电效率提高高达 50%。此外，还提出了一些未来的工作建议。