PDF(Pubmed)
Abstract：
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.
摘要：
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要障碍。老化现象深刻地影响基于钙钛矿的器件的光电性能。除了增强钙钛矿的稳定性，老化状态的实时检测，旨在监测衰老进程，对于基础研究和有机-无机杂化钙钛矿的商业化至关重要。在这项研究中,利用太赫兹时域光谱技术对钙钛矿的老化状态进行了实时研究。我们的分析一致显示，随着钙钛矿老化的增加，0.968THz处的吸收峰强度逐渐下降。此外，对钙钛矿老化过程中太赫兹吸收峰的强度和位置的变化进行了系统的讨论。这些发现有助于钙钛矿老化的实时评估，提供了一种有前途的方法来加快基于钙钛矿的光电器件的商业化。
