Pressure-Induced Distinct Self-Trapped Exciton Emission in Sb3+-Doped Cs2NaInCl6 Double Perovskite

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外文摘要：The Cs2NaInC16 double perovskite is one of the most promising lead-free perovskites due to its exceptional sta-bility and straightforward synthesis.However,it faces challenges related to inefficient photoluminescence.Doping and high pressure are employed to tailor the optical properties of Cs2NaInCl6.Herein,Sb3+doped Cs2NaInCl6(Sb3+∶Cs2NaInCl6)was synthesized and it exhibits blue emission with a photoluminescence quantum yield of up to 37.3％.Further,by employing pressure tuning,a blue stable emission under a very wide range from 2.7 GPa to 9.8 GPa is realized in Sb3+∶Cs2NaInCl6.Subsequently,the emission intensity of Sb3+∶Cs2NaInC16 experiences a significant increase(3.3 times)at 19.0 GPa.It is revealed that the pressure-induced distinct emissions can be attributed to the carrier self-trapping and detrapping between Cs2NaInCl6 and Sb3+.Notably,the lattice compression in the cubic phase inevitably modifies the band gap of Sb3+∶Cs2NaInCl6.Our findings provide valuable insights into effects of the high pressure in further boosting unique emission characteristics but also offer promising opportunities for development of doped double perovskites with enhanced optical functionalities.

作者：

冯友佳、陈亚平、王乐瑶、王家祥、常断华、袁亦方、武敏、付瑞净、张丽丽、王庆林、王凯、郭海中、王玲瑞

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作者单位：

Key Laboratory of Materials Physics(Ministry of Education),School of Physics,Zhengzhou University,Zhengzhou 450001,China

Shandong Key Laboratory of Optical Communication Science and Technology,School of Physics Science and Information Technology,Liaocheng University,Liaocheng 252059,China

College of Applied Physics and Materials,Wuyi University,Jiangmen 529020,China

基金：

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Henan province of ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationCAS Interdisciplinary Innovation TeamPostdoctoral Research Grant in Henan ProvinceScience Foundation for Highlevel Talents of Wuyi University

项目编号：

2021YFA14002002021YFA0718701U20321271190432212104411121743472023004103562019M6525602020M682326JCTD-2019-0119020132021AL019

出版年：

2024

DOI：

10.1088/0256-307X/41/6/063201

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI

影响因子：0.515

ISSN：0256-307X

年,卷(期)：2024.41(6)