Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses
Cu+-activated aluminosilicate oxyfluoride glasses were successfully synthesized by melt-quenching method in air by adding Al powder as a reducing agent. Their luminescent properties were studied systematically via optical absorption, excitation, and emission spectra. Upon UV irradiation, a blue-emit...
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sg-ntu-dr.10356-1439442023-02-28T19:48:47Z Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses Shi, Yafei Wei, Rongfei Guo, Junlu Tian, Xiangling Hu, Fangfang Guo, Hai School of Physical and Mathematical Sciences Science::Physics Cu+ Glass Cu+-activated aluminosilicate oxyfluoride glasses were successfully synthesized by melt-quenching method in air by adding Al powder as a reducing agent. Their luminescent properties were studied systematically via optical absorption, excitation, and emission spectra. Upon UV irradiation, a blue-emitting band of Cu+ was observed in glass with relatively low optical basicity. By increasing the optical basicity of glass, obvious redshifts of excitation (290 → 313 nm) and emission (435 → 470 nm) peaks were obtained. Through enhancing Cu+ content, the excitation and emission bands presented further redshifts, which shifted from 313 to 338 nm and 470 to 560 nm, respectively. It is proposed that the absorption band and emitting color of Cu+-doped glass can be tuned by changing the optical basicity of glass and Cu+ concentration. The highest quantum yield can reach 62.5%. More importantly, an investigation of the thermal stability showed that over 85% of the room temperature luminescent intensity is preserved at 200°C. These results imply that Cu+-activated aluminosilicate oxyfluoride glasses may be utilized for UV-converted W-LEDs. Published version This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 51802285, 11804303), the Natural Science Foundation of Zhejiang Province (Grant No. LQ18A040004), and the Open Fund of the State Key Laboratory of Luminescent Materials and Devices (South China University of Technology). 2020-10-02T03:35:49Z 2020-10-02T03:35:49Z 2019 Journal Article Shi, Y., Wei, R., Guo, J., Tian, X., Hu, F., & Guo, H. (2019). Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses. Frontiers in Materials, 6, 246-. doi:10.3389/fmats.2019.00246 2296-8016 https://hdl.handle.net/10356/143944 10.3389/fmats.2019.00246 6 246 en Frontiers in Materials © 2019 Shi, Wei, Guo, Tian, Hu and Guo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. application/pdf |
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Cu+-activated aluminosilicate oxyfluoride glasses were successfully synthesized by melt-quenching method in air by adding Al powder as a reducing agent. Their luminescent properties were studied systematically via optical absorption, excitation, and emission spectra. Upon UV irradiation, a blue-emitting band of Cu+ was observed in glass with relatively low optical basicity. By increasing the optical basicity of glass, obvious redshifts of excitation (290 → 313 nm) and emission (435 → 470 nm) peaks were obtained. Through enhancing Cu+ content, the excitation and emission bands presented further redshifts, which shifted from 313 to 338 nm and 470 to 560 nm, respectively. It is proposed that the absorption band and emitting color of Cu+-doped glass can be tuned by changing the optical basicity of glass and Cu+ concentration. The highest quantum yield can reach 62.5%. More importantly, an investigation of the thermal stability showed that over 85% of the room temperature luminescent intensity is preserved at 200°C. These results imply that Cu+-activated aluminosilicate oxyfluoride glasses may be utilized for UV-converted W-LEDs. |
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School of Physical and Mathematical Sciences |
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School of Physical and Mathematical Sciences Shi, Yafei Wei, Rongfei Guo, Junlu Tian, Xiangling Hu, Fangfang Guo, Hai |
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Article |
author |
Shi, Yafei Wei, Rongfei Guo, Junlu Tian, Xiangling Hu, Fangfang Guo, Hai |
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Shi, Yafei |
title |
Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses |
title_short |
Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses |
title_full |
Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses |
title_fullStr |
Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses |
title_full_unstemmed |
Influence of optical basicity on Cu+ luminescence in aluminosilicate oxyfluoride glasses |
title_sort |
influence of optical basicity on cu+ luminescence in aluminosilicate oxyfluoride glasses |
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2020 |
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https://hdl.handle.net/10356/143944 |
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