Synergetic Porous Insulating and Passivation Layer Design for High-Efficiency and Stable Perovskite Solar Cells

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY ACS Materials Letters Pub Date : 2024-12-23 DOI:10.1021/acsmaterialslett.4c02099

Jiashun Li, Jing Liao, Tianhe Dong, Hongyu Li, Ze Li, Li Tan, Xu Chen, Wenfeng Zhang and Haijin Li*,

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Abstract

Perovskite solar cells have attracted extensive attention due to their simple manufacturing process and high efficiency. However, defects between the perovskite and hole transport layer can lead to nonradiative recombination of photogenerated carriers and severe ion migration, which accelerates the degradation of such devices. Here, we chose to deposit an Al₂O₃ porous insulating layer on the surface of the perovskite film. At the same time, we chose to introduce NMABr (1-Naphthylmethylamine Bromide) into Al₂O₃ as a modifier to overcome the issue that applying Al₂O₃ alone may hinder interfacial carrier transport due to the uncontrolled morphology. The addition of NMABr not only has a passivation effect but also changes the morphology of the Al₂O₃ layer. Under the synergistic effect of Al₂O₃ and NMABr, a porous insulating contact layer is better formed, which is conducive to carrier transport and improves the stability and efficiency.

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高效稳定钙钛矿太阳能电池的协同多孔绝缘钝化层设计

钙钛矿太阳能电池因其制造工艺简单、效率高而受到广泛关注。然而，钙钛矿和空穴输运层之间的缺陷会导致光生载流子的非辐射重组和严重的离子迁移，从而加速器件的退化。在这里，我们选择在钙钛矿膜的表面沉积一层Al2O3多孔绝缘层。同时，我们选择在Al2O3中引入NMABr（1-萘甲基溴胺）作为改性剂，以克服单独使用Al2O3可能由于形貌不受控制而阻碍界面载流子运输的问题。NMABr的加入不仅有钝化作用，而且改变了Al2O3层的形貌。在Al2O3和NMABr的协同作用下，更好地形成多孔绝缘接触层，有利于载流子输运，提高稳定性和效率。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.