@article{1a188f14d395418b8d70d225fe67ef8a,
title = "Multifunctional Molecule Engineered SnO2 for Perovskite Solar Cells with High Efficiency and Reduced Lead Leakage",
abstract = "Outstanding performance of perovskite solar cells (PSCs) is closely linked to the optoelectrical properties of charge transporting layers. Herein, amino trimethylene phosphonic acid (ATMP) and KOH are mixed (ATMP-K) and incorporated in a SnO2 precursor solution to significantly improve the performance of the electron transport layer (ETL) SnO2 in PSCs. Combining density functional theory (DFT) calculations and experiments, it is demonstrated that ATMP-K effectively passivates the oxygen vacancy and reduces the hydroxyl groups on the surface of SnO2, resulting in a larger perovskite grain size and better energy-level alignment with perovskites. ATMP-K boosts the power conversion efficiency (PCE) of the PSCs from 20.99% to 23.52%. When applying in a perovskite/silicon heterojunction tandem solar cell, the device delivers an efficiency up to 24.75% with a high VOC of 1.94 V, compared with 22.67% and 1.85 V of the reference cells. Furthermore, ATMP-K-modified PSCs also show extraordinary ability to absorb Pb2+ ions after their degradation in water, offering a facile strategy for reducing Pb leakage.",
keywords = "2022 OA procedure, lead leakage, perovskite solar cells, SnO, tandem solar cells, ATMP-K",
author = "Jiali Zhang and Renjie Li and Sofia Apergi and Pengyang Wang and Biao Shi and Junke Jiang and Ningyu Ren and Wei Han and Qian Huang and Geert Brocks and Ying Zhao and Shuxia Tao and Xiaodan Zhang",
note = "Funding Information: J.Z., R.L., and S.A. contributed equally to this work. The authors are grateful to the financial support of National Key Research and Development Program of China (grant no. 2018YFB1500103), the National Natural Science Foundation of China (grant no. 61674084), the Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China (grant no. B16027), Tianjin Science and Technology Project (grant no. 18ZXJMTG00220), Key R&D Program of Hebei Province (grant no. 19214301D), Natural Science Foundation of Tianjin (grant no. 20JCQNJC02070), China Postdoctoral Science Foundation (grant no. 2020T130317), and the Fundamental Research Funds for the Central Universities, Nankai University. The work done in the Netherlands was supported by funding from NWO START‐UP and Computational Sciences for Energy Research (CSER) tenure track program of Shell and NWO (Project No. 15CST04‐2). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",
year = "2021",
month = oct,
doi = "10.1002/solr.202100464",
language = "English",
volume = "5",
journal = "Solar RRL",
issn = "0038-092X",
publisher = "Elsevier Ltd",
number = "10",
}
