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Exploration of Unconventional excitation wavelength and dynamic emission in rare-earth doped multilayer core-shell Structures: Application for optical "Hard" and "Soft" switching.
Shang, Jingyu; Wang, Yuxiao; Wu, Jinlei; Li, Zhenhua; Xia, Hongbo; Jing, Yuhan; Liu, Xinyu; Xu, Wen; Dong, Bin.
Afiliación
  • Shang J; School of Physics, Harbin Institute of Technology, Harbin 150001, PR China.
  • Wang Y; School of Physics, Harbin Institute of Technology, Harbin 150001, PR China. Electronic address: wangyx@hit.edu.cn.
  • Wu J; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China.
  • Li Z; School of Physics, Harbin Institute of Technology, Harbin 150001, PR China.
  • Xia H; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China.
  • Jing Y; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China.
  • Liu X; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China.
  • Xu W; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China. Electronic address: xuwen@dl
  • Dong B; Key Laboratory of Photosensitive Materials and Device of Liaoning Province, Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, PR China. Electronic address: dong@dln
J Colloid Interface Sci ; 678(Pt C): 283-290, 2024 Sep 14.
Article en En | MEDLINE | ID: mdl-39298979
ABSTRACT
Optical switches are increasingly acknowledged for their potential advantages over mechanical counterparts in various domains. However, research on optical switches remains relatively nascent, primarily focusing on applications like anti-counterfeiting, switching chemical reactions, etc., while neglecting the control of photocurrent switching. Here, we have developed NaYF430 %Er-NaYF4-NaYF420 %Ho-NaYF4 core-shell nanocrystals with unique upconversion (UC) multi-color emission properties under 1530 nm, 980 nm and 1150 nm laser excitations. These nanocrystals allow for optical control of circuit switching by modulating photocurrent signals in photosensitive circuits. The UC emission is due to the self-sensitization of rare earth ions in the core and shell. By adjusting the intermediate shell thickness, we have optimized the luminescence and investigated the mechanism. Combining these nanocrystals with a WO3 quantum dots (QDs) photochromic hydrogel, dynamic variation of UC emissions could be realized. Moreover, by combining with a commercial silicon photodetector, we constructed a photosensitive circuit demonstrating the modulation of photocurrent signal output and realized the "hard switching" of rapid circuit cutoff. Furthermore, by using the photochromic effect of WO3 QDs, the "soft switching" of slow circuit cutoff and recovery were also achieved. This work has significant implications for the development and application such as energy management system and smart home of optical switches in various fields.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos