Two-Dimensional Lead-Free Hybrid Nickel-Based Perovskites with Two-Color Emission and Their Scintillation Properties
Source abstract
Abstract
Recently, two-dimensional (2D) organic−inorganic perovskites have attracted significant attention due to their unique optoelectronic properties, including a tunable bandgap and high photoluminescence quantum efficiency. However, many 2D perovskites remain underexplored and may prove to be excellent candidates for device fabrication. Hence, we investigate a family of Pb-free, Ni-based 2D perovskites with the general formula (A) 2 NiCl 4, where the organic cation A is varied among phenylmethylammonium (PMA), phenylethylammonium (PEA), and phenylpropylammonium (PPA). Photoacoustic spectroscopy and photoluminescence measurements reveal two distinct optical features: a 300 nm ligand-surface-related band and a 500 nm band assigned to Ni d -states, which is the bandgap in these crystals. Furthermore, radioluminescence experiments demonstrate a high light yield for (PPA) 2 NiCl 4, reaching 23,000 photons/MeV at 80 K, highlighting its potential as a promising low-temperature scintillator.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Perovskite Materials and Applications · 2D Materials and Applications · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Semiconductor Materials Engineering, Wrocław University of Science and Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370 Wrocław, Poland
Łukasiewicz Research Network − PORT Polish Center for Technology Development, Stabłowicka 147, 54-066 Wrocław, Poland
Institute of Physics, Faculty of Physics, Astronomy, and Informatics, Nicolaus Copernicus University in Toruń, Grudziądzka 5, 87-100 Toruń, Poland
Center of Excellence Applied Physics and Chemistry, Nano Center Indonesia, Jalan Raya PUSPIPTEK, South Tangerang 15314, Indonesia
Quantum and Nano Technology Research Group, Faculty of Industrial Technology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Jl. Ganesha 10, Bandung 40132, Indonesia
Funding
Narodowe Centrum Nauki · Kementerian Keuangan Republik Indonesia
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