Raza Ehsan, Aziz Fakhra, Ahmad Zubair
Department of Electronics, Faculty of Physical and Numerical Sciences, University of Peshawar Peshawar 25120 Pakistan.
Department of Electronics, Jinnah College for Women, University of Peshawar Peshawar 25120 Pakistan.
RSC Adv. 2018 Jun 7;8(37):20952-20967. doi: 10.1039/c8ra03477j. eCollection 2018 Jun 5.
Perovskite solar cells (PSCs) have recently emerged as one of the most exciting fields of research of our time, and the World Economic Forum in 2016 recognized them as one of the top 10 technologies in 2016. With 22.7% power conversion efficiency, PSCs are poised to revolutionize the way power is produced, stored and consumed. However, the widespread use of PSCs requires addressing the stability issue. Therefore, it is now time to focus on the critical step stability under the operating conditions for the development of a sustainable and durable PV technology based on PSCs. In order to improve the stability of PSCs, hole transport materials (HTMs) have been considered as the paramount components. This is due to the fact that most of the organic HTMs possess a hygroscopic and acidic nature that leads to poor stability of the PSCs. This article reviews briefly but comprehensively the environmental stability issues of PSCs, fundamentals, strategies for improvement, the role of HTMs towards stability and various types of HTMs. Also the environmental parameters affecting the performance of perovskite solar cells including temperature, moisture and light soaking environment have been considered.
钙钛矿太阳能电池（PSCs）最近已成为我们这个时代最令人兴奋的研究领域之一，2016年世界经济论坛将其认定为当年的十大技术之一。凭借22.7%的功率转换效率，PSCs有望彻底改变电力的生产、存储和消费方式。然而，PSCs的广泛应用需要解决稳定性问题。因此，现在是时候关注基于PSCs的可持续且耐用的光伏技术发展中在运行条件下的关键步骤——稳定性了。为了提高PSCs的稳定性，空穴传输材料（HTMs）被视为至关重要的组件。这是因为大多数有机HTMs具有吸湿性和酸性，这会导致PSCs稳定性较差。本文简要但全面地综述了PSCs的环境稳定性问题、基本原理、改进策略、HTMs对稳定性的作用以及各类HTMs。此外，还考虑了影响钙钛矿太阳能电池性能的环境参数，包括温度、湿度和光浸泡环境。
