journal article·2024-06-05

High-Resolution X-ray Image from Copper-Based Perovskite Hybrid Polymer

Xue Hao, Lin Nie, Xuanyu Zhu, Guoqiang Zeng, Chunhai Liu, Zhaowei Teng, Haozhe Liu, Yang Yue, Xue Yu, Ting Wang

ACS Applied Materials & Interfaces· Volume 16· Issue 22
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Abstract

Cs 3 Cu 2 I 5 nanocrystals (NCs) are considered to be promising materials due to their high photoluminescence efficiency, lack of lead toxicity, and X-ray responsiveness. However, during the crystallization process, NCs are prone to agglomeration and exhibit uneven size distribution, resulting in several light scattering that severely affect their imaging resolution. Herein, we successfully developed a high-resolution scintillator film by growing copper-based perovskite NCs within a hybrid polymer matrix. By leveraging the ingenious integration of polyvinylidene fluoride (PVDF) and polymethyl methacrylate (PMMA), the size and distribution uniformity of Cs 3 Cu 2 I 5 NCs can be effectively controlled. Consequently, a high spatial resolution of 14.3 lp mm –1 and a low detection limit of 105 nGy s –1 are achieved, and the scintillator film has excellent flexibility and stability. These results highlight the promising application of Cs 3 Cu 2 I 5 scintillator films in low-cost, flexible, and high-performance medical imaging.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Gas Sensing Nanomaterials and Sensors

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials and Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China

Nuclear Technology Key Laboratory of Earth Science, Chengdu University of Technology, Chengdu 610059, China

Second Affiliated Hospital, Kunming Medical University, Kunming 650500, China

School of Mechanical Engineering, Institute for Advanced Materials, Deformation and Damage from Multi-Scale, Chengdu University, Chengdu 610106, China

Funding

China Association for Science and Technology · National Key Research and Development Program of China · Natural Science Foundation of Yunnan Province · State Key Laboratory of Silicate Materials for Architectures · Natural Science Foundation of Sichuan Province · National Natural Science Foundation of China

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