Hysteresis in hybrid perovskite indoor photovoltaics.
Hysteresis in hybrid perovskite indoor photovoltaics.
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DOI：
10.1098/rsta.2021.0144
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发表时间：
2022-04-18
期刊：
影响因子：
5
通讯作者：
Jagadamma, Lethy Krishnan
中科院分区：
文献类型：
--
作者：
Bulloch, Alasdair;Wang, Shaoyang;Ghosh, Paheli;Jagadamma, Lethy Krishnan
卤化物钙钛矿室内光伏 (PV) 是一种可行的解决方案，可为庞大的物联网技术领域中的数十亿个传感器自主供电。然而，对于这些光伏器件在室内照明条件下的磁滞行为存在知识空白。目前的工作是第一个致力于通过进行瞬态 J-V 扫描和稳态最大功率点跟踪 (MPPT) 测量来探索卤化物钙钛矿室内光伏器件迟滞程度的实验研究。研究了滞后对器件结构、电子传输层的选择以及钙钛矿光活性层的组成的依赖性。在室内照明下，基于p-i-n MAPbI3的器件表现出持续高于30％的高功率转换效率（PCE）（稳定PCE）和可忽略不计的滞后行为，而n-i-p MAPbI3器件表现出较差的性能（稳定PCE ∼ 15％）并具有明显的滞后效应。我们的研究还表明，与 n-i-p MAPbI3 相比，n-i-p 三重阳离子钙钛矿器件由于其抑制离子迁移效应而更适合用于室内光伏（稳定的 PCE ∼ 25%）。据观察，与 1 Sun 相比，根据 J-V 扫描测量估计的 PCE 值的偏差和最大功率点跟踪方法在室内照明下更高，因此对于基于卤化物钙钛矿的室内光伏，来自 MPPT 测量的 PCE 应优先于 J-V 扫描测量。我们的研究结果表明，可以采用以下方法来最大化卤化物钙钛矿室内光伏的稳态PCE：（i）选择具有抑制离子迁移效应的钙钛矿活性层组合物（例如含Cs的三重阳离子钙钛矿）和（ii）对于离子迁移非常活跃的MAPbI3等钙钛矿组合物，具有有机电荷传输层的p-i-n结构比具有传统金属氧化物（例如TiO2、SnO2）作为电荷传输层。本文是“开发弹性能源系统”主题的一部分。
Halide perovskite indoor photovoltaics (PV) are a viable solution to autonomously power the billions of sensors in the huge technology field of the Internet of Things. However, there exists a knowledge gap in the hysteresis behaviour of these photovoltaic devices under indoor lighting conditions. The present work is the first experimental study dedicated to exploring the degree of hysteresis in halide perovskite indoor photovoltaic devices by carrying out both transient J–V scan and steady state maximum power point tracking (MPPT) measurements. Dependence of hysteresis on device architecture, selection of electron transporting layers and the composition of the perovskite photoactive layers were investigated. Under indoor illumination, the p-i-n MAPbI3-based devices show consistently high power conversion efficiency (PCE) (stabilized PCE) of greater than 30% and negligible hysteresis behaviour, whereas the n-i-p MAPbI3 devices show poor performance (stabilized PCE ∼ 15%) with pronounced hysteresis effect. Our study also reveals that the n-i-p triple cation perovskite devices are more promising (stabilized PCE ∼ 25%) for indoor PV compared to n-i-p MAPbI3 due to their suppressed ion migration effects. It was observed that the divergence of the PCE values estimated from the J–V scan measurements, and the maximum power point tracking method is higher under indoor illumination compared to 1 Sun, and hence for halide perovskite-based indoor PV, the PCE from the MPPT measurements should be prioritized over the J–V scan measurements. The results from our study suggest the following approaches for maximizing the steady state PCE from halide perovskite indoor PV: (i) select perovskite active layer composition with suppressed ion migration effects (such as Cs-containing triple cation perovskites) and (ii) for the perovskite composition such as MAPbI3, where the ion migration is very active, p-i-n architecture with organic charge transport layers is beneficial over the n-i-p architecture with conventional metal oxides (such as TiO2, SnO2) as charge transport layers. This article is part of the theme issue ‘Developing resilient energy systems’.
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影响因子：
5.5
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