Embedding Perovskite in Polymer Matrix Achieved Positive Temperature Response with Inversed Temperature Crystallization

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外文摘要：Organic perovskites are promising semiconductor materials for advanced photoelectric applications.Their fluorescence typically shows a negative temperature coefficient due to bandgap change and structural instability.In this study,a novel perovskite-based composite with positive sensitivity to temperature was designed and obtained based on its inverse temperature crystallization,demonstrating good flexibility and solution processability.The supercritical drying method was used to address the limitations of annealing drying in preparing high-performance perovskite.Optimizing the precursor composition proved to be an effective approach for achieving high fluorescence and structural integrity in the perovskite material.This perovskite-based composite exhibited a positive temperature sensitivity of 28.563％℃-1 for intensity change and excellent temperature cycling reversibility in the range of 25-40 ℃ in an ambient environment.This made it suitable for use as a smart window with rapid response.Furthermore,the perovskite composite was found to offer temperature-sensing photoluminescence and flexible processability due to its components of perovskite-based compounds and polyethylene oxide.The organic precursor solvent could be a promising candidate for use as ink to print or write on various substrates for optoelectronic devices responding to temperature.

外文关键词：

flexibilityinversed temperature crystallizationperovskitepositive temperature response

作者：

Meiting Peng、Xue Guan、Yingzhu Wu、Nan Zhang、Qi Feng、Liyong Tian、Yancheng Wu、Yangfan Zhang、Feng Gan、Fuqin Deng、Meilin Huang、Guichuan Xing、Ningbo Yi

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作者单位：

College of Textile Science and Engineering,Wuyi University,Yingbin Road 99,Jiangmen 529020,China

Institute of Applied Physics and Materials Engineering,University of Macau,Macao SAR 999078,China

School of Applied Physics and Materials,Wuyi University,Yingbin Road 99,Jiangmen 529020,China

Faculty of Intelligent Manufacturing,Wuyi University,Yingbin Road 99,Jiangmen 529020,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaGuangdong Provincial Department of Education Featured Innovation ProjectJiangmen Key Project of Research for Basic and Basic ApplicationJiangmen Key Project of Research for Basic and Basic ApplicationScience Foundation for Young Research Group of Wuyi UniversityScience Foundation for Young Research Group of Wuyi UniversityScience Foundation for Young Research Group of Wuyi UniversityWuyi University-Hong Kong/Macau Joint Research FundsYouth Innovation Talent Project for the Universities of GuangdongGuangdong Basic and Applied Basic Research Foundation

项目编号：

6190400552103010520032002021KTSCX138202103010280000744320210301027900061142020AL0212019AL0192020AL0162021WGALH052020KQNCX0892020A1515110897

出版年：

2024

DOI：

10.1002/eem2.12713

能源与环境材料(英文)

ISSN：

年,卷(期)：2024.7(5)