Perspective: Atomic Layer Deposition Strategies for Surface Passivation of Metal-Halide Perovskite Absorbers

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2025-03-22 DOI:10.1007/s13391-025-00563-x

George Kwesi Asare, Joshua Sraku Adu, Byungha Shin, David J. Fermin, Helen Hejin Park

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Abstract

Recent advancements have been made in perovskite solar cells (PSCs) using atomic layer deposition (ALD) of aluminum oxide (Al₂O₃) and other suitable metal oxides such as zirconium oxide (ZrO₂) as a perovskite surface passivation technique. ALD has demonstrated significant potential for enhancing photovoltaic (PV) performance and the long-term light, thermal, humidity, and ultraviolet (UV) stability of PSCs by addressing surface defects leading to higher charge extraction and mitigating environmental degradation with only a few nanometers of thickness. However, direct ALD deposition on perovskite films can sometimes degrade the perovskite film from ALD precursor reactivity, elevated temperatures, and vacuum-induced instabilities. This perspective discusses recent strategies, challenges, and future directions for surface passivation of the perovskite solar absorber using ALD to improve device performance and long-term stability for commercialization of PSCs.

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金属卤化物钙钛矿吸收剂表面钝化的原子层沉积策略

近年来，在钙钛矿太阳能电池（PSCs）中，利用氧化铝（Al2O3）和其他合适的金属氧化物（如氧化锆（ZrO2））的原子层沉积（ALD）作为钙钛矿表面钝化技术取得了进展。ALD已经证明了其在提高光伏（PV）性能和长期光、热、湿度和紫外线（UV）稳定性方面的巨大潜力，通过解决表面缺陷导致更高的电荷提取和减轻环境退化，只有几纳米的厚度。然而，在钙钛矿薄膜上直接沉积ALD有时会因ALD前驱体反应性、高温和真空诱导的不稳定性而使钙钛矿薄膜降解。本文讨论了钙钛矿太阳能吸收器表面钝化的最新策略、挑战和未来方向，以提高器件性能和PSCs商业化的长期稳定性。

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来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.