标题： 具有热激活离子电流测量的钙钛矿太阳能电池中移动离子的量化 显示英文标题

标题： Quantification of mobile ions in perovskite solar cells with thermally activated ion current measurements

摘要： 移动离子在钙钛矿太阳能电池的退化中起着关键作用，因此对其量化对于提高器件稳定性至关重要。 各种电学测量方法已被用于表征移动离子。 然而，区分不同的离子迁移过程可能很困难。 此外，通常需要在不同温度下进行多种测量，以探测不同的离子及其激活能。 在此，我们展示了一种基于测量钙钛矿太阳能电池热激活离子电流（TAIC）的新表征技术。 该方法在一次温度扫描中揭示了移动离子的密度、扩散系数和激活能，并提供了一种直观的方法来区分移动离子种类。 我们将TAIC技术应用于量化MAPbI3和三阳离子钙钛矿太阳能电池中的移动离子。 我们发现三阳离子器件具有更高的激活能和更低的扩散系数。 TAIC测量是一种简单而强大的工具，有助于更好地理解钙钛矿太阳能电池中的离子迁移。 显示英文摘要

摘要： Mobile ions play a key role in the degradation of perovskite solar cells, making their quantification essential for enhancing device stability. Various electrical measurements have been applied to characterize mobile ions. However, discerning between different ionic migration processes can be difficult. Furthermore, multiple measurements at different temperatures are usually required to probe different ions and their activation energies. Here, we demonstrate a new characterization technique based on measuring the thermally activated ion current (TAIC) of perovskite solar cells. The method reveals density, diffusion coefficient, and activation energy of mobile ions within a single temperature sweep and offers an intuitive way to distinguish mobile ion species. We apply the TAIC technique to quantify mobile ions of MAPbI3 and triple-cation perovskite solar cells. We find a higher activation energy and a lower diffusion coefficient in the triple-cation devices. TAIC measurements are a simple yet powerful tool to better understand ion migration in perovskite solar cells.