Xu Jinzhuo, Wu Yinghui, Fan Shuting, Liu Xudong, Yin Zhen, Yang Youpeng, Wang Renheng, Qian Zhengfang, Sun Yiwen
Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen, 518060, China.
Guangdong Provincial Key Laboratory of Durability for Ocean Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China.
Front Optoelectron. 2024 Jul 29;17(1):24. doi: 10.1007/s12200-024-00128-0.
The inadequate stability of organic-inorganic hybrid perovskites remains a significant barrier to their widespread commercial application in optoelectronic devices. Aging phenomena profoundly affect the optoelectronic performance of perovskite-based devices. In addition to enhancing perovskite stability, the real-time detection of aging status, aimed at monitoring the aging progression, holds paramount importance for both fundamental research and the commercialization of organic-inorganic hybrid perovskites. In this study, the aging status of perovskite was real-time investigated by using terahertz time-domain spectroscopy. Our analysis consistently revealed a gradual decline in the intensity of the absorption peak at 0.968 THz with increasing perovskite aging. Furthermore, a systematic discussion was conducted on the variations in intensity and position of the terahertz absorption peaks as the perovskite aged. These findings facilitate the real-time assessment of perovskite aging, providing a promising method to expedite the commercialization of perovskite-based optoelectronic devices.
有机-无机杂化钙钛矿的稳定性不足仍然是其在光电器件中广泛商业应用的重大障碍。老化现象深刻影响基于钙钛矿的器件的光电性能。除了提高钙钛矿的稳定性外，针对监测老化进程的老化状态实时检测对于有机-无机杂化钙钛矿的基础研究和商业化都至关重要。在本研究中，利用太赫兹时域光谱对钙钛矿的老化状态进行了实时研究。我们的分析一致表明，随着钙钛矿老化程度的增加，0.968 THz处吸收峰的强度逐渐下降。此外，还对太赫兹吸收峰的强度和位置随钙钛矿老化的变化进行了系统讨论。这些发现有助于对钙钛矿老化进行实时评估，为加速基于钙钛矿的光电器件的商业化提供了一种有前景的方法。
