Pressure-driven configurational crossover between 4f(7) and 4f(6)5d(1 )States - Giant enhancement of narrow Eu2+UV-Emission lines in SrB4O7 for luminescence manometry
RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia
Pressure-driven configurational crossover between 4f(7) and 4f(6)5d(1 )States - Giant enhancement of narrow Eu2+UV-Emission lines in SrB4O7 for luminescence manometry
Pressure-driven configurational crossover between 4f(7) and 4f(6)5d(1 )States - Giant enhancement of narrow Eu2+UV-Emission lines in SrB4O7 for luminescence manometry
[EN] Accurate, fast, and non-invasive methods for the determination of the local pressure magnitude are crucial for the investigation of the physical and chemical behavior of materials at the extreme conditions of high ...[+]
[EN] Accurate, fast, and non-invasive methods for the determination of the local pressure magnitude are crucial for the investigation of the physical and chemical behavior of materials at the extreme conditions of high pressure. A promising method for remote operando pressure measurements is luminescence manometry. However, a limiting bottleneck for high-pressure readout is the usually occurring quenching of the emission signal of the luminescent sensor material upon compression. In this work, we reported for the first time the pressure-induced intensity enhancement (by 3 orders of magnitude) of the 4f(7)(P-6(7/2)) -> 4f(7) ( S-8(7/2) ) emission line of Eu2+ in the UV range due to pressure-induced configurational crossover between the excited (4)f(6)5d(1) and 4f(7) energy levels in SrB4O7 host. The peak centroid of the narrow 4f (7) -> 4f(7) transition exhibits a significant red-shift (similar to -12.84 cm(-1) GPa(-1); 0.17 nm GPa(-1)) with simultaneous tem-perature independence of the line position (4.8.10(-4) nm K-1). The pressure sensitivity of the proposed system is competitive to the so far well-established luminescent pressure sensors based on Al2O3:Cr3+ (ruby) and SrB4O7:Sm2+ with characteristic narrow line emission in the red range, and offers an alter-native spectral range in parallel with an intensity enhancement at higher pressures. This novel pressure gauge may significantly improve the accuracy of the remote pressure measurements and open up new horizons for materials science research at even higher pressures.[-]
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C42/ES/SESQUIOXIDOS Y COMPUESTOS METAVALENTES BAJO CONDICIONES EXTREMAS/ ...[+]
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C42/ES/SESQUIOXIDOS Y COMPUESTOS METAVALENTES BAJO CONDICIONES EXTREMAS/ info:eu-repo/grantAgreement/AEI//RED2018-102612-T//MALTA- CONSOLIDER TEAM/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C43/ES/SIMULACIONES AB INITIO DE MATERIALES AVANZADOS BAJO CONDICIONES EXTREMAS/ info:eu-repo/grantAgreement/Generalitat Valenciana//GVPROMETEO2018-123//Materiales avanzados para el uso eficiente de la energia (EFIMAT)/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-106383GB-C44/ES/CORRELACIONES ESTRUCTURALES Y OPTICAS EN MACRO- Y NANO-MATERIALES FUNCIONALES CON IONES ACTIVOS BAJO CONDICIONES EXTREMAS DE PRESION Y%2FO TEMPERATURA/ info:eu-repo/grantAgreement/ACIISI//ProID2017010078//Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI)/ info:eu-repo/grantAgreement/NCN//2016%2F23%2FD%2FST4%2F00296/ info:eu-repo/grantAgreement/AEI//PID2019-106383GB-C43//SIMULACIONES AB INITIO DE MATERIALES AVANZADOS BAJO CONDICIONES EXTREMAS/ info:eu-repo/grantAgreement/AEI//PID2019-106383GB-C44/ info:eu-repo/grantAgreement/AEI//RYC2020- 028778-I/ [-]
Agradecimientos:
This work was supported by the Polish National Science Centre (2016/23/D/ST4/00296), Ministerio de Economia y Competitividad (MINECO) under the National Program of Sciences and Technological Materials (PID2019-106383GB-42, ...[+]
This work was supported by the Polish National Science Centre (2016/23/D/ST4/00296), Ministerio de Economia y Competitividad (MINECO) under the National Program of Sciences and Technological Materials (PID2019-106383GB-42, PID2019-106383GB-43, and PID2019-106383GB-44), by the Spanish Research Agency (AEI) under projects MALTA Consolider Team network (RED2018-102612T), by Agencia Canaria de Investigacion, Innovacion y Sociedad de la Informacion (ACIISI) (ProID2017010078), by Generalidad Valenciana under Project PROMETEO/2018/123 (EFIMAT) and by EUFEDER funds. M. Runowski acknowledges support from Fondo Social Europeo and Agencia Estatal de Investigacion (RYC2020028778-I). T.Z. is grateful to grant No. POWR.03.02.00-0 0-i020/17 financed by European Union through the European Social Fund under the Operational Program Knowledge Education Development. The authors also acknowledge the computational resource time provide by the MALTA cluster and the Red Espanola de Supercomputacion.[-]