DataVXAdvanced Functional MaterialsPaper
journal article·2023-11Open access

Liquid Nitrogen Temperature Mechanoluminescence and Persistent Luminescence

Xueqing Liu, Liangliang Zhang, Dandan Wang, Dengkui Wang, He Shen, Hao Wu, Huajun Wu, Guohui Pan, Zhendong Hao, Feng Liu, Jiahua Zhang

Advanced Functional Materials· Volume 33· Issue 46
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Source abstract

Abstract

Abstract As novel stress‐sensing materials, the reported mechanoluminescence (ML) phosphors work only at or above room temperature. Herein, the ML response to low temperatures (77 K) is extended by employing ultra‐shallow traps. Strong ML stimulated by handwriting force followed by persistent luminescence is observed in BaSi2O2N2:Eu2+ (BSON) at 77 K. The UV pre‐irradiated BSON can still keep the characteristics of ML with 45% intensity after 300 min. Abundant ultra‐shallow traps with depth of ≈0.19 eV are found and revealed to be responsible for the low‐temperature ML and persistent luminescence. Manipulation of the ultra‐shallow traps is realized by doping Ge, Er, and Ce ions in BSON, leading to significant ML enhancement at 77 K. Together with ML, the ultra‐shallow traps also exhibit force memory ability to replicate the pre‐applied force pattern simply by afterglow. The finding advances the state‐of‐the‐art in force sensing under low temperature conditions.
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Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Luminescence and Fluorescent Materials · Acoustic Wave Resonator Technologies

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

Affiliations

State Key Laboratory of Luminescence and Applications Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences 3888 Eastern South Lake Road Changchun 130033 China

Key Laboratory for UV‐Emitting Materials and Technology of Ministry of Education Northeast Normal University Changchun 130024 China

Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University Siping 136000 China

State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and Technology Changchun 130022 China

Funding

National Natural Science Foundation of China · Youth Innovation Promotion Association · Chinese Academy of Sciences

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