One-Dimensional Hybrid Copper(I) Iodide Single Crystal with Renewable Scintillation Properties

Yiping Du; Lin Ma; Zhengguang Yan; Jiawen Xiao; Kaiwen Wang; Taifeng Lin; Xiaodong Han; Dingguo Xia

doi:10.1021/acs.inorgchem.3c00770

One-Dimensional Hybrid Copper(I) Iodide Single Crystal with Renewable Scintillation Properties

Inorg Chem. 2023 Jul 24;62(29):11350-11359. doi: 10.1021/acs.inorgchem.3c00770. Epub 2023 Jul 13.

Authors

Yiping Du^{1

2}, Lin Ma^{1

2}, Zhengguang Yan^{1

2}, Jiawen Xiao^{1

2}, Kaiwen Wang^{1

2}, Taifeng Lin³, Xiaodong Han^{1

2}, Dingguo Xia⁴

Affiliations

¹ Institute of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China.
² Beijing Key Laboratory of Microstructure and Properties of Solids, Beijing University of Technology, Beijing 100124, China.
³ Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
⁴ College of Engineering, Peking University, Beijing 100871, China.

PMID: 37440672
DOI: 10.1021/acs.inorgchem.3c00770

Abstract

Low-dimensional hybrid copper(I) halides attract considerable attention in the field of light emissions. In this work, we obtained the centimeter-sized single crystal of 1,3-propanediamine copper(I) iodide (PDACuI₃) with a solvent evaporation method. The single crystal X-ray diffraction of PDACuI₃ reveals that the [CuI₄] tetrahedra form the corner-connected chains separated by PDAs, forming a one-dimensional structure with an orthorhombic space group of Pbca. The band gap is determined to be 4.03 eV, and the room temperature photoluminescence (PL) quantum yield is determined to be 26.5%. The thermal quenching and negative thermal quenching of emission are observed via temperature-dependent PL spectra, and our study shows that the intermediate nonradiative state below the self-trapped exciton state may get involved in these temperature-dependent behaviors. The X-ray scintillation performance of PDACuI₃ single crystals is also evaluated, and the relative light output renewed to 94.3% of the fresh one after a low-temperature annealing. On the basis of our results, PDACuI₃ single crystals provide nontoxicity and renewable scintillation performance, thus showing potential application in the area of low-cost radiation detectors.