@article{08fecfb5488c4fc2a2b8eaa1e7dd7a61,
title = "Tailoring of Ligand-Off Nanoparticles Inks for Thin p-Type Oxide Overlayers Formation with Maintaining Intact Halide Perovskite",
abstract = "In n-i-p halide perovskite solar cells (HPSCs), the development of p-type oxides is one of the most noteworthy approaches as hole transport materials (HTMs) for long-term stability and mass production. However, the deposition of oxide HTMs through a solution process over the perovskite layer without damage to the perovskite layer remains a major challenge. Here, the colloidal dispersion of ligand-off NiO nanoparticles (NPs) to form the HTM overlayer on perovskite using appropriate solvents that do not damage the underlying perovskite layer is reported. Monodispersed NiO NPs are synthesized using oleylamine (OLA) ligands via the solvothermal method, and the OLA ligands are then removed to form ligand-off NiO NPs. Based on the Hansen solubility theory, appropriate mixed solvents are found for both the dispersion of NiO NPs without ligands and coating without perovskite damage. The colloidal dispersion form a compact and uniform NiO NPs layer of 30 nm thickness on the perovskite layer, allowing n-SnO2/Halide/p-NiO HPSCs to be successfully fabricated. The HPSC shows a record power conversion efficiency under one sun illumination for an n-i-p oxide/halide/oxide structure and excellent thermal stability maintaining 98% of the initial efficiency for 580 h under 85 °C and 10% relative humidity condition.",
keywords = "dispersion, halide perovskite solar cells, hole transport overlayers, ligand-off nickel oxides, solution deposition, thermal stability",
author = "Park, {So Yeon} and Kim, {Se Jin} and Lee, {Jun Hyeok} and Jeong, {Min Ju} and Lee, {Jae Myeong} and Jung, {Hyun Suk} and Noh, {Jun Hong}",
note = "Funding Information: S.Y.P. and S.J.K. contributed equally to this work. This work was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry, and Energy (20183010014470) and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF-2020R1A2C3009115, NRF-2017R1A4A1015022, and NRF-2018M1A2A2058207). This work was also supported by Institute of Information and Communications Technology Planning and Evaluation (IITP) grant funded by the Korea government (MSIT) (No. 2020-0-00541, Flexible Photovoltaic Device Module with Autonomous Power Supply for Smart Farm Wireless Composite IoT Sensor). This work was also supported by a grant from Hyundai Motor Company (R-204696). The funding information was updated on August 2, 2021 after initial online publication. Funding Information: S.Y.P. and S.J.K. contributed equally to this work. This work was supported by the New and Renewable Energy Core Technology Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) from the Ministry of Trade, Industry, and Energy (20183010014470) and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIP) (NRF‐2020R1A2C3009115, NRF‐2017R1A4A1015022, and NRF‐2018M1A2A2058207). This work was also supported by Institute of Information and Communications Technology Planning and Evaluation (IITP) grant funded by the Korea government (MSIT) (No. 2020‐0‐00541, Flexible Photovoltaic Device Module with Autonomous Power Supply for Smart Farm Wireless Composite IoT Sensor). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH.",
year = "2021",
month = aug,
day = "2",
doi = "10.1002/adfm.202100863",
language = "English",
volume = "31",
journal = "Advanced Functional Materials",
issn = "1616-301X",
publisher = "Wiley-VCH Verlag",
number = "31",
}