Molecular‐Like Ag Clusters and Eu3+ Co‐Sensitized Efficient Broadband Spectral Modification with Enhanced Yb3+ Emission. Issue 7 (8th April 2016)

• Record Type: Journal Article
• Authors: Wang, Huiyun; Ye, Song; Liu, Tianhua; Li, Song; Wang, Deping
• Editors: Ballato, J.
• Is Part Of: Journal of the American Ceramic Society. Volume 99:Issue 7(2016)
• Page Start: 2376
• Page End: 2381
• Publication Date: 2016-04-08
• Subjects: luminescence properties -- rare earths -- glass -- optical materials; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.14237
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract : AgNO3 /EuF3 /YbF3 tri‐doped oxyfluoride glass was prepared by a melt‐quenching method, in which a high‐efficient broadband spectral modification can be realized due to the simultaneous energy‐transfer processes of Eu 3+ →Yb 3+, molecular‐like Ag (ML‐Ag) clusters→Yb 3+, and ML‐Ag clusters→Eu 3+ →Yb 3+ . The spectral measurements indicated that besides the F‐center brought by the fluorides, the formation of the ML‐Ag clusters and the evolution of silver species within the glass matrix were also closely related to the introduction of Eu 3+ and Yb 3+ ions and which in return greatly affected the luminescence properties of these rare‐earth ions. As the UV‐visible irradiation in the wavelength region of 250–600 nm can be efficiently converted into near‐infrared emission around 1000 nm in the AgNO3 /EuF3 /YbF3 tri‐doped glass, which thus has promising application in enhancing the photovoltaic conversion efficiency of the silicon solar cell.