School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, 451191, China.
Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.
Macromol Rapid Commun. 2020 Feb;41(4):e1900437. doi: 10.1002/marc.201900437. Epub 2020 Jan 1.
In the past 20 years, organic solar cells (OSCs) have made great progress in pursuing high power-conversion efficiencies, reaching the application threshold. Instead, device stability is becoming particularly important toward commercialization. There are many factors influencing the stability of OSCs, such as light, heat, humidity, oxygen, as well as device structure. Active layer materials, as the most critical functional layer in the devices, are greatly affected by these factors in terms of both efficiency and stability. Herein, it is desirable and urgent to summarize methods for obtaining active layer materials with long-term stability, mainly focusing on the chemical structure and blending morphology. Meanwhile, the corresponding degraded mechanism of OSCs is concluded and analyzed. In this outlook, challenges for developing high-performance and stable OSCs are discussed.
在过去的 20 年中，有机太阳能电池（OSCs）在追求高效率方面取得了巨大进展，已经达到了应用的门槛。相比之下，器件稳定性对于商业化而言变得尤为重要。有许多因素会影响 OSCs 的稳定性，例如光、热、湿度、氧气以及器件结构。活性层材料作为器件中最关键的功能层，会受到这些因素在效率和稳定性方面的极大影响。因此，总结获得具有长期稳定性的活性层材料的方法是非常可取和紧迫的，主要集中在化学结构和共混形态上。同时，还对 OSCs 的相应降解机制进行了总结和分析。在这篇综述中，讨论了开发高性能和稳定的 OSCs 所面临的挑战。
