A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors
碩士 === 國立交通大學 === 應用化學系 === 91 === This research demonstrated the successful synthesis of two series of rare-earth (i.e., Eu3+, Tb3+, Pr3+, Sm3+, Dy3+) -activated R2O2S (R = Y, Gd) via a solvothermal route at 150℃, followed by H2S-annealing at elevated temperatures (i.e., 300-700℃). To establish th...
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ndltd-TW-091NCTU05000452016-06-22T04:14:28Z http://ndltd.ncl.edu.tw/handle/33447118541110628018 A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors 奈米稀土硫氧化物螢光體的製備、微結構與發光特性之研究 Bo-Chang Yan 顏伯昌 碩士 國立交通大學 應用化學系 91 This research demonstrated the successful synthesis of two series of rare-earth (i.e., Eu3+, Tb3+, Pr3+, Sm3+, Dy3+) -activated R2O2S (R = Y, Gd) via a solvothermal route at 150℃, followed by H2S-annealing at elevated temperatures (i.e., 300-700℃). To establish the appropriate processing conditions, we have investigated the microstructure and luminescent properties of R2O2S nanophosphors, as a function of source and concentration of starting materials, synthetic temperature, solvents and their filling rate, activator concentration and surface modification. As indicated by TEM image analyses, spherical (60 nm in diameter) and rod-shaped (10 nm in diameter and 1.5 m in length) nanophosphors of Y2O2S:Tb have been prepared by solvothermal reactions using methanol (MeOH) and ethylenediamine (en) as a solvent, respectively, followed by H2S annealing.. Furthermore, a rod-shaped nanophosphor of Y2O2S:Tb with 30 nm in diameter and 1.5 m in length has been synthesized by using MeOH/en mixture (50:50, v/v) as a solvent. On the other hand, rod-shaped nanophosphors of Gd2O2S:Tb with 20 nm and 4 m in diameter and length, respectively, have been obtained by using en as a solvent in a solvothermal reaction. Teng-Ming Chen 陳登銘 2003 學位論文 ; thesis 104 zh-TW |
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碩士 === 國立交通大學 === 應用化學系 === 91 === This research demonstrated the successful synthesis of two series of rare-earth (i.e., Eu3+, Tb3+, Pr3+, Sm3+, Dy3+) -activated R2O2S (R = Y, Gd) via a solvothermal route at 150℃, followed by H2S-annealing at elevated temperatures (i.e., 300-700℃). To establish the appropriate processing conditions, we have investigated the microstructure and luminescent properties of R2O2S nanophosphors, as a function of source and concentration of starting materials, synthetic temperature, solvents and their filling rate, activator concentration and surface modification.
As indicated by TEM image analyses, spherical (60 nm in diameter) and rod-shaped (10 nm in diameter and 1.5 m in length) nanophosphors of Y2O2S:Tb have been prepared by solvothermal reactions using methanol (MeOH) and ethylenediamine (en) as a solvent, respectively, followed by H2S annealing.. Furthermore, a rod-shaped nanophosphor of Y2O2S:Tb with 30 nm in diameter and 1.5 m in length has been synthesized by using MeOH/en mixture (50:50, v/v) as a solvent. On the other hand, rod-shaped nanophosphors of Gd2O2S:Tb with 20 nm and 4 m in diameter and length, respectively, have been obtained by using en as a solvent in a solvothermal reaction.
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author2 |
Teng-Ming Chen |
author_facet |
Teng-Ming Chen Bo-Chang Yan 顏伯昌 |
author |
Bo-Chang Yan 顏伯昌 |
spellingShingle |
Bo-Chang Yan 顏伯昌 A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
author_sort |
Bo-Chang Yan |
title |
A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
title_short |
A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
title_full |
A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
title_fullStr |
A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
title_full_unstemmed |
A Study on the Synthesis﹐Microstructures and Luminescent of Rare-earth Activated Oxysulfide Nanophosphors |
title_sort |
study on the synthesis﹐microstructures and luminescent of rare-earth activated oxysulfide nanophosphors |
publishDate |
2003 |
url |
http://ndltd.ncl.edu.tw/handle/33447118541110628018 |
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