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journal article·2024-04Open access

Atmospheric Humidity Underlies Irreproducibility of Formamidinium Lead Iodide Perovskites

Keonwoo Park, Shaun Tan, Tim Kodalle, Do‐Kyoung Lee, Maged Abdelsamie, Ji‐Sang Park, Joo‐Hong Lee, Sung‐Kwang Jung, Jeong Hoon Ko, Nam‐Gyu Park, Carolin M. Sutter‐Fella, Yang Yang, Jin‐Wook Lee

Advanced Materials· Volume 36· Issue 14
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Source abstract

Abstract

Abstract Metal halide perovskite solar cells (PSCs) are infamous for their batch‐to‐batch and lab‐to‐lab irreproducibility in terms of stability and performance. Reproducible fabrication of PSCs is a critical requirement for market viability and practical commercialization. PSC irreproducibility plagues all levels of the community; from institutional research laboratories, start‐up companies, to large established corporations. In this work, the critical function of atmospheric humidity to regulate the crystallization and stabilization of formamidinium lead triiodide (FAPbI3) perovskites is unraveled. It is demonstrated that the humidity content during processing induces profound variations in perovskite stoichiometry, thermodynamic stability, and optoelectronic quality. Almost counterintuitively, it is shown that the presence of humidity is perhaps indispensable to reproduce phase‐stable and efficient FAPbI3‐based PSCs.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Nano Engineering and Department of Nano Science and Technology, SKKU Advanced Institute of Nanotechnology (SAINT) Sungkyunkwan University Suwon 16419 Republic of Korea

Department of Material Science and Engineering University of California Los Angeles Los Angeles CA 90095 USA

Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

School of Chemical Engineering Sungkyunkwan University Suwon 16419 Republic of Korea

Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering California Institute of Technology Pasadena CA 91125 USA

SKKU Institute of Energy Science & Technology (SIEST) Sungkyunkwan University Suwon 16419 Republic of Korea

Funding

National Research Foundation of Korea · Solar Energy Technologies Office · U.S. Department of Energy · Office of Science · Office of Energy Efficiency and Renewable Energy

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