Abstract
Ordered arrays of luminescent GdVO4:Ln (Ln = Eu3+, Dy3+, Sm3+) films with dot patterns have been successfully fabricated via microcontact printing method. The soft-lithography process utilizes a PDMS elastomeric mold as the stamp combined with a Pechini-type sol–gel process to produce luminescent patterns on quartz plates, in which a GdVO4:Ln (Ln = Eu3+, Dy3+, Sm3+) precursor solution was employed as ink. The ordered luminescent GdVO4:Ln patterns were revealed by optical microscopy and their microstructure, consisting of nanometer-scale particles, as demonstrated by scanning electronic microscopy observations. In addition, photoluminescence and cathodoluminescence were carried out to characterize the patterned GdVO4:Ln (Ln = Eu3+, Dy3+, Sm3+) samples. Upon UV-light or electron-beam irradiation, the rare earth ions Eu3+, Dy3+, and Sm3+ in the crystalline GdVO4 host show their characteristic transitions dominated by 5D0–7F2, 4F9/2–6H13/2 ,and 4G5/2–6H7/2, respectively. These results make the combining soft lithography with a Pechini-type sol–gel route have potential applications as rare-earth luminescent pixels for next-generation field-emission display devices.
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This project is financially supported by the National Basic Research Program of China (Grant No. 2010CB327704), National High Technology Program of China (2011AA03A407) and the National Natural Science Foundation of China (Grant Nos. NSFC 60977013, 20921002).
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Wang, D., Yang, P., Cheng, Z. et al. Facile patterning of luminescent GdVO4:Ln (Ln = Eu3+, Dy3+, Sm3+) thin films by microcontact printing process. J Nanopart Res 14, 707 (2012). https://doi.org/10.1007/s11051-011-0707-2
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DOI: https://doi.org/10.1007/s11051-011-0707-2