Copper Iodide Inks for High-Resolution X-ray Imaging Screens

Tengyue He, Yang Zhou, Peng Yuan, Jun Yin, Luis Gutiérrez-Arzaluz, Shulin Chen, Jian Xin Wang, Simil Thomas, Husam N. Alshareef, Osman M. Bakr, Omar F. Mohammed*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Copper-based halide scintillators have attracted considerable interest because of their high light yields, low detection limits, low toxicity, and moderate fabrication conditions. Here, we synthesized two Cu(I) iodide inks, comprising zero-dimensional Cu4I6(L1)2 nanoparticles (L1 = 1-propyl-1,4-diazabicyclo[2.2.2]octan-1-ium) and one-dimensional Cu4I6(L2)2 nanorods (L2 = 4-dimethylamino-1-ethylpyridinium) for X-ray imaging application. The Cu4I6(L1)2 nanoparticles and Cu4I6(L2)2 nanorods exhibited broadband green and yellow emission with an ultrahigh photoluminescence quantum yield of 95.3% and 92.2%, respectively. Consequently, the two Cu(I) iodide ink-based X-ray screens exhibited low detection limits of 96.4 and 102.1 nGy s-1, respectively, which are approximately 55 times lower than the dose required for standard medical diagnosis (5.5 μGy s-1). Importantly, both the scintillation screens exhibited extraordinary X-ray imaging resolutions exceeding 30 lp mm-1, more than double those of the conventional CsI:Tl and Ga2O2S:Tb scintillators. This study provides a new avenue for exploring high-resolution X-ray imaging screens on the basis of Cu-based halide ink for medical radiography and nondestructive detection.

Original languageEnglish (US)
Pages (from-to)1362-1370
Number of pages9
JournalACS Energy Letters
Issue number3
StatePublished - Mar 10 2023

Bibliographical note

Funding Information:
This work was supported by King Abdullah University of Science and Technology (KAUST). For computer time, this research used the resources of the Supercomputing Laboratory at KAUST.

Publisher Copyright:
© 2023 The Authors. Published by American Chemical Society.

ASJC Scopus subject areas

  • Chemistry (miscellaneous)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Materials Chemistry


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