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Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals

In this work the scintillation properties of PEA(2)PbBr(4) are studied as function of temperature, accessing the potential use of these materials for low temperature applications. The scintillation properties and mechanism have been studied using a combination of temperature dependent photoluminesce...

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Autores principales: van Blaaderen, Jacob Jasper, Maddalena, Francesco, Dang, Cuong, Birowosuto, Muhammad Danang, Dorenbos, Pieter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9386685/
https://www.ncbi.nlm.nih.gov/pubmed/36090966
http://dx.doi.org/10.1039/d2tc01483a
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author van Blaaderen, Jacob Jasper
Maddalena, Francesco
Dang, Cuong
Birowosuto, Muhammad Danang
Dorenbos, Pieter
author_facet van Blaaderen, Jacob Jasper
Maddalena, Francesco
Dang, Cuong
Birowosuto, Muhammad Danang
Dorenbos, Pieter
author_sort van Blaaderen, Jacob Jasper
collection PubMed
description In this work the scintillation properties of PEA(2)PbBr(4) are studied as function of temperature, accessing the potential use of these materials for low temperature applications. The scintillation properties and mechanism have been studied using a combination of temperature dependent photoluminescence emission and excitation, X-ray excited emission and decay measurements. At room temperature the X-ray excited emission is dominated by the 442 nm emission with a lifetime of 35.2 ns. Under UV-Vis photon excitation an additional emission peak is observed at 412 nm. At 10 K, both X-ray and UV-Vis photon excited emission spectra show a narrow emission peak at 412 nm and a broad emission band centred around 525 nm with a lifetime of 1.53 ns (24%) and 154 ns (76%) respectively. The exact nature of the observed emission peaks is not known. For this reason two potential mechanisms explaining the difference between UV-Vis photon and X-ray excitation and their temperature dependent emissions are explored. The total spectral intensity decreases to 72% of the intensity at room temperature at 10 K. It is suggested that the observed negative thermal quenching behaviour results from a combination of more self absorption and a higher degree of self trapped exciton formation under X-ray excitation. Based on the observed fast decay component at 10 K and light yield of 9400 photons per MeV at room temperature, showing only a 28% decrease at 10 K, could make this material potentially interesting for low temperature and fast timing applications.
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spelling pubmed-93866852022-09-08 Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals van Blaaderen, Jacob Jasper Maddalena, Francesco Dang, Cuong Birowosuto, Muhammad Danang Dorenbos, Pieter J Mater Chem C Mater Chemistry In this work the scintillation properties of PEA(2)PbBr(4) are studied as function of temperature, accessing the potential use of these materials for low temperature applications. The scintillation properties and mechanism have been studied using a combination of temperature dependent photoluminescence emission and excitation, X-ray excited emission and decay measurements. At room temperature the X-ray excited emission is dominated by the 442 nm emission with a lifetime of 35.2 ns. Under UV-Vis photon excitation an additional emission peak is observed at 412 nm. At 10 K, both X-ray and UV-Vis photon excited emission spectra show a narrow emission peak at 412 nm and a broad emission band centred around 525 nm with a lifetime of 1.53 ns (24%) and 154 ns (76%) respectively. The exact nature of the observed emission peaks is not known. For this reason two potential mechanisms explaining the difference between UV-Vis photon and X-ray excitation and their temperature dependent emissions are explored. The total spectral intensity decreases to 72% of the intensity at room temperature at 10 K. It is suggested that the observed negative thermal quenching behaviour results from a combination of more self absorption and a higher degree of self trapped exciton formation under X-ray excitation. Based on the observed fast decay component at 10 K and light yield of 9400 photons per MeV at room temperature, showing only a 28% decrease at 10 K, could make this material potentially interesting for low temperature and fast timing applications. The Royal Society of Chemistry 2022-07-27 /pmc/articles/PMC9386685/ /pubmed/36090966 http://dx.doi.org/10.1039/d2tc01483a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
van Blaaderen, Jacob Jasper
Maddalena, Francesco
Dang, Cuong
Birowosuto, Muhammad Danang
Dorenbos, Pieter
Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title_full Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title_fullStr Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title_full_unstemmed Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title_short Temperature dependent scintillation properties and mechanisms of (PEA)(2)PbBr(4) single crystals
title_sort temperature dependent scintillation properties and mechanisms of (pea)(2)pbbr(4) single crystals
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9386685/
https://www.ncbi.nlm.nih.gov/pubmed/36090966
http://dx.doi.org/10.1039/d2tc01483a
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