Rapid fabrication of perovskite solar cells through intense pulse light annealing of SnO2 and triple cation perovskite thin films
Rapid fabrication of perovskite solar cells through intense pulse light annealing of SnO2 and triple cation perovskite thin films
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DOI：
10.1016/j.matdes.2019.108237
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发表时间：
2020-01-05
影响因子：
8.4
通讯作者：
Druffel, Thad
中科院分区：
文献类型：
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作者：
Ghahremani, Amir H.;Martin, Blake;Druffel, Thad
钙钛矿太阳能电池（PSCs）性能和稳定性的快速发展使研究重点转向通过高速和经济高效的自动化方法进行可扩展的批量制造。本文首次利用强脉冲光（IPL）对SnO2电子传输层（ETL）和混合三阳离子钙钛矿薄膜进行快速退火，快速制备出高效的PSCs。在IPL过程中，加入二碘甲烷（CH2I2）烷基卤化物可以通过提供被紫外能量劈裂的碘来延缓钙钛矿光活性膜的结晶和改善其表面形貌，从而提高PSC效率。在相对湿度为60%的环境下，采用IPL退火制备的PSCs的最大效率和填充系数分别为12.56%和78.3%，柔性PET-ITO衬底的最大效率和填充系数分别为7.6%和64.75%。通过扫描电镜（SEM）、紫外可见性（UV-Vis）、光致发光（PL）、x射线衍射（XRD）和x射线光电子能谱（XPS）等技术对退火后的材料进行了表征。此外，还采用阻抗谱（IS）和电流-电压测量来研究制备的电池的功能。我们的结果描述了顺序步骤IPL退火快速制造高效psc的可行性，这直接适用于可扩展的卷对卷制造。(C) 2019作者。Elsevier Ltd.出版。
Rapid evolution of perovskite solar cells (PSCs) performance and stability has inclined the research focus towards scalable bulk fabrication through high speed and cost-effective automated methods. For the first time, intense pulsed light (IPL) is utilized to rapidly fabricate efficient PSCs through swift annealing of both the SnO2 electron transport layer (ETL) and mixed triple cation perovskite thin films. The addition of di-iodomethane (CH2I2) alkyl-halide could enhance the PSC efficiency by retarding the crystallization and improving the surface morphology of the perovskite photoactive film through supplying iodine cleaved by ultraviolet energy during IPL process. The maximum efficiency and fill factor of the PSCs fabricated by IPL annealing were 12.56% and 78.3% for the rigid glass-FTO slides, and 7.6% and 64.75% for flexible PET-ITO substrates when processed in the ambient with relative humidity of 60%, respectively. The annealed materials were characterized through Scanning electron microscopy (SEM), UV-Vis, photoluminescence (PL), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) techniques. In addition, impedance spectroscopy (IS) and current-voltage measurements were conducted to study the functionality of fabricated cells. Our results delineated the feasibility of sequential step IPL annealing on rapid fabrication of efficient PSCs which is directly applicable for scalable roll-to-roll manufacturing. (C) 2019 The Authors. Published by Elsevier Ltd.