Methodologies to Improve the Stability of High-Efficiency Perovskite Solar Cells

IF 14 Q1 CHEMISTRY, MULTIDISCIPLINARY
Sanjay Sandhu, Nam-Gyu Park
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Abstract

Organic–inorganic lead halide perovskite solar cells (PSCs) have attracted significant interest from the photovoltaic (PV) community due to suitable optoelectronic properties, low manufacturing cost, and tremendous PV performance with a certified power conversion efficiency (PCE) of up to 26.5%. However, long-term operational stability should be guaranteed for future commercialization. Over the past decade, intensive research has focused on improving the PV performance and device stability through the development of novel charge transport materials, additive engineering, compositional engineering, interfacial modifications, and the synthesis of perovskite single crystals. In this Account, we provide a comprehensive overview of recent progress and research directions in the fabrication of highly efficient and stable PSCs, including key outcomes from our group. We begin by highlighting the critical challenges and their causes that are detrimental to the development of stable PSCs. We then discuss the fundamentals of halide perovskites including their optical and structural properties. This is followed by a description of the fabrication methods for perovskite crystals, films, and various device architectures. Next, we introduced target-oriented key strategies such as developing high-quality single crystals for redissolution as a perovskite precursor to fabricate phase-stable and reproducible PSCs, along with reduced material costs, employing multifunctional additives to get uniform, robust, and stable perovskite films, and interfacial engineering techniques for effective surface and buried interface defect passivation to improve charge transport and long-term stability. Finally, we conclude with a critical assessment and perspective on the future development of PSCs. This Account will provide valuable insights into the current state-of-the-art PSCs and promising strategies tailored to specific roles that can be combined to manipulate the perovskite structure for novel outcomes and further advancements.

Abstract Image

提高高效 Perovskite 太阳能电池稳定性的方法
有机-无机卤化铅包晶太阳能电池(PSCs)具有合适的光电特性、较低的制造成本,以及经认证的高达 26.5% 的功率转换效率(PCE)等巨大的光伏性能,因此引起了光伏界的极大兴趣。然而,要实现未来的商业化,必须保证长期运行的稳定性。在过去的十年中,通过开发新型电荷传输材料、添加剂工程、成分工程、界面改性和合成过氧化物单晶等方法,人们集中精力开展了提高光伏性能和设备稳定性的研究。在本报告中,我们将全面概述在制造高效稳定的 PSCs 方面的最新进展和研究方向,包括我们研究小组的主要成果。我们首先强调了不利于开发稳定的 PSCs 的关键挑战及其原因。然后,我们讨论了卤化物包晶的基本原理,包括其光学和结构特性。随后介绍了包晶石晶体、薄膜和各种器件架构的制造方法。接下来,我们介绍了以目标为导向的关键策略,如开发用于再溶解的高质量单晶作为包晶前驱体,以制造相位稳定和可重现的 PSC,同时降低材料成本;采用多功能添加剂以获得均匀、坚固和稳定的包晶薄膜;采用界面工程技术进行有效的表面和埋藏界面缺陷钝化,以改善电荷传输和长期稳定性。最后,我们将对 PSCs 的未来发展进行批判性评估和展望。本讲座将为您提供有关当前最先进的 PSCs 的宝贵见解,以及针对特定作用量身定制的有前途的策略,这些策略可以结合起来操纵过氧化物结构,以取得新的成果和进一步的进步。
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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CiteScore
17.70
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0.00%
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