Experimental and Computational Study of Elasticoluminescence in Gd2O2S:Tb3+: Implications for Mechanoluminescence Origins
- Authors
- Han, Joo Hyeong; Yoon, Yeongjun; Park, Yong Min; Kim, Ha Jun; Viswanath, N.S.M.; Cho, Han Bin; Jang, Se Hyuk; Kim, Yu Ri; Seo, Jeong Min; Moon, Ji Yoon; Kim, Kyeounghak; Im, Won Bin
- Issue Date
- Jul-2023
- Publisher
- ELECTROCHEMICAL SOC INC
- Keywords
- mechanoluminescence; elasticoluminsecence; thermoluminescence; density functional theory
- Citation
- ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, v.12, no.7, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
- Volume
- 12
- Number
- 7
- Start Page
- 1
- End Page
- 5
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189023
- DOI
- 10.1149/2162-8777/ace652
- ISSN
- 2162-8769
- Abstract
- Mechanoluminescent materials can convert mechanical stress into light. Among these, elasticoluminescent materials are useful for monitoring periodic and repetitive events. However, the development of high-performance elasticoluminescent materials remains a significant challenge because of the lack of understanding of the structures and mechanisms underlying mechanoluminescent materials. To address this issue, this study investigated the elasticoluminescence properties of Gd2O2S:Tb3+ through a comprehensive analysis using experimental and computational techniques. Using thermoluminescence spectroscopy and density functional theory, we observed that trap states within the bandgap are generated by the O2− and S2− anion vacancies, which contribute to mechanoluminescence. The observation of green mechanoluminescence (ML) characteristics in Gd2O2S:Tb3+ was accompanied by a meticulous analysis of their origins, which aligned significantly well with the computational results. These findings enhance our understanding of the origin of ML and provide a solid foundation for the development of next-generation high-performance ML materials, thus fostering advancements in various fields of advanced technology research.
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