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Organo-Metal Halide Scintillator with Weak Thermal Quenching Up to 200 °C

Wu, Yanqing ; Chen, Junsheng LU ; Zheng, Daoyuan ; Xia, Xusheng ; Yang, Songqiu ; Yang, Yang ; Chen, Jiaxin ; Pullerits, Tõnu LU ; Han, Keli and Yang, Bin (2022) In Journal of Physical Chemistry Letters 13(25). p.5794-5800
Abstract

The prominent thermal quenching (TQ) effect of organic-inorganic metal halides limits their applications for lighting and imaging. Herein, we report an organo-metal halide scintillator (TTPhP)2MnCl4(TTPhP+= tetraphenylphosphonium cation), which exhibits a weak TQ effect up to 200 °C under ultraviolet-visible light (efficiency loss of 5.5%) and X-ray radiation (efficiency loss of 37%). The light yield of the (TTPhP)2MnCl4scintillator (37 »000 photons MeV-1at 200 °C) under X-ray radiation is >2 times that of the commercial scintillator LuAG:Ce (15 »000 photons MeV-1at 200 °C). The microscopic mechanism of the weak TQ effect is demonstrated to be the... (More)

The prominent thermal quenching (TQ) effect of organic-inorganic metal halides limits their applications for lighting and imaging. Herein, we report an organo-metal halide scintillator (TTPhP)2MnCl4(TTPhP+= tetraphenylphosphonium cation), which exhibits a weak TQ effect up to 200 °C under ultraviolet-visible light (efficiency loss of 5.5%) and X-ray radiation (efficiency loss of 37%). The light yield of the (TTPhP)2MnCl4scintillator (37 »000 photons MeV-1at 200 °C) under X-ray radiation is >2 times that of the commercial scintillator LuAG:Ce (15 »000 photons MeV-1at 200 °C). The microscopic mechanism of the weak TQ effect is demonstrated to be the scintillator having the ability to compensate for the emission losses from trapped charges and the large Mn-Mn distance (10.233 Å) suppressing nonradiative recombination at high temperatures. We further demonstrate the applications of (TTPhP)2MnCl4as high-power white-light-emitting diodes operated at currents of ≤300 mA and X-ray imaging at 200 °C with a high spatial resolution.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry Letters
volume
13
issue
25
pages
7 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85133215260
  • pmid:35726880
ISSN
1948-7185
DOI
10.1021/acs.jpclett.2c01573
language
English
LU publication?
yes
id
e0f9d27f-2e73-4591-bbb2-922aafa0dce4
date added to LUP
2022-09-28 11:17:36
date last changed
2024-09-21 04:09:09
@article{e0f9d27f-2e73-4591-bbb2-922aafa0dce4,
  abstract     = {{<p>The prominent thermal quenching (TQ) effect of organic-inorganic metal halides limits their applications for lighting and imaging. Herein, we report an organo-metal halide scintillator (TTPhP)<sub>2</sub>MnCl<sub>4</sub>(TTPhP<sup>+</sup>= tetraphenylphosphonium cation), which exhibits a weak TQ effect up to 200 °C under ultraviolet-visible light (efficiency loss of 5.5%) and X-ray radiation (efficiency loss of 37%). The light yield of the (TTPhP)<sub>2</sub>MnCl<sub>4</sub>scintillator (37 »000 photons MeV<sup>-1</sup>at 200 °C) under X-ray radiation is &gt;2 times that of the commercial scintillator LuAG:Ce (15 »000 photons MeV<sup>-1</sup>at 200 °C). The microscopic mechanism of the weak TQ effect is demonstrated to be the scintillator having the ability to compensate for the emission losses from trapped charges and the large Mn-Mn distance (10.233 Å) suppressing nonradiative recombination at high temperatures. We further demonstrate the applications of (TTPhP)<sub>2</sub>MnCl<sub>4</sub>as high-power white-light-emitting diodes operated at currents of ≤300 mA and X-ray imaging at 200 °C with a high spatial resolution.</p>}},
  author       = {{Wu, Yanqing and Chen, Junsheng and Zheng, Daoyuan and Xia, Xusheng and Yang, Songqiu and Yang, Yang and Chen, Jiaxin and Pullerits, Tõnu and Han, Keli and Yang, Bin}},
  issn         = {{1948-7185}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{25}},
  pages        = {{5794--5800}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry Letters}},
  title        = {{Organo-Metal Halide Scintillator with Weak Thermal Quenching Up to 200 °C}},
  url          = {{http://dx.doi.org/10.1021/acs.jpclett.2c01573}},
  doi          = {{10.1021/acs.jpclett.2c01573}},
  volume       = {{13}},
  year         = {{2022}},
}