Detail publikace

Towards high loading cesium lead halide nanocomposites for radiation detection

KRÁL, J. DĚCKÁ, K. ZABLOUDIL, V. LIŠKA, P. HÁJEK, F. HORÁK, M. ČUBA, V. MIHÓKOVÁ, E. AUFFRAY, E.

Originální název

Towards high loading cesium lead halide nanocomposites for radiation detection

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Cesium lead halide nanocrystals (NCs) and their nanocomposites have attracted a lot of attention in the field of radiation detection thanks to their excellent luminescent properties, especially their potential for fast timing. However, most research on their nanocomposites focuses on low loadings (around 1 wt%) which is insufficient for detecting high-energy X-rays or gamma-rays. There have been only few reports exploring materials with higher loadings but all with limited success in terms of transparency of the final material. In our work, we present nanocomposites of cesium lead halide NCs with loading up to 40 wt%. We employ innovative surface functionalization of the NCs to enhance their dispersion within the matrix, thereby improving the final material transparency. We display the NC dispersion within the matrix using confocal photoluminescence microscopy and we then characterise the radioluminescent properties of nanocomposites of cesium lead bromide (CPB) and cesium lead bromochloride NCs with varying chloride content. To asses their performance as radiation detectors, we measure their timing capabilities under X-rays. Our findings reveal a significant improvement in time resolution under X-rays from previously published 300 ps for CPB polymer nanocomposites to 215 ps. When combined with increased stopping power of high NC content, this advancement holds great promise for practical applications, e.g. in time-of-flight positron emission tomography and computed tomography or high energy physics.

Klíčová slova

cesium lead halide nanocrystals; nanocomposite; radiation detection; fast timing

Autoři

KRÁL, J.; DĚCKÁ, K.; ZABLOUDIL, V.; LIŠKA, P.; HÁJEK, F.; HORÁK, M.; ČUBA, V.; MIHÓKOVÁ, E.; AUFFRAY, E.

Vydáno

1. 1. 2025

Nakladatel

IOP Publishing Ltd

Místo

BRISTOL

ISSN

2515-7639

Periodikum

Journal of Physics: Materials

Ročník

8

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany počet

13

URL

https://iopscience.iop.org/article/10.1088/2515-7639/ad9e2f

BibTex

@article{BUT193855,
  author="KRÁL, J. and DĚCKÁ, K. and ZABLOUDIL, V. and LIŠKA, P. and HÁJEK, F. and HORÁK, M. and ČUBA, V. and MIHÓKOVÁ, E. and AUFFRAY, E.",
  title="Towards high loading cesium lead halide nanocomposites for radiation detection",
  journal="Journal of Physics: Materials",
  year="2025",
  volume="8",
  number="1",
  pages="13",
  doi="10.1088/2515-7639/ad9e2f",
  issn="2515-7639",
  url="https://iopscience.iop.org/article/10.1088/2515-7639/ad9e2f"
}