Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals
Single crystals of Ho<sub>2</sub>O<sub>3</sub>-doped Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> (YSZ) with different Y<sub>2</sub>O<sub>3</sub> and Ho<sub>2</sub>O<sub>3</sub> conte...
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MDPI AG
2022-03-01
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| Online Access: | https://www.mdpi.com/2073-4352/12/3/415 |
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| author | Yuhua Yang Shoulei Xu Siyao Li Wenxia Wu Yihua Pan Daini Wang Xing Hong Zeyu Cheng Wen Deng |
| author_facet | Yuhua Yang Shoulei Xu Siyao Li Wenxia Wu Yihua Pan Daini Wang Xing Hong Zeyu Cheng Wen Deng |
| author_sort | Yuhua Yang |
| collection | DOAJ |
| description | Single crystals of Ho<sub>2</sub>O<sub>3</sub>-doped Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> (YSZ) with different Y<sub>2</sub>O<sub>3</sub> and Ho<sub>2</sub>O<sub>3</sub> contents were grown by the optical floating zone method. XRD and Raman spectra were measured and showed that crystal samples all had tetragonal structures. Measurements of positron annihilation lifetime spectra indicated that the increase in Y<sub>2</sub>O<sub>3</sub> concentration led to the increases of defects and mean positron lifetime, which enhanced the scattering of light and reduced the luminous intensity and the quantum yield (QY) of the crystal. Under the excitation at 446 nm, photoluminescence (PL) spectra of Ho<sub>2</sub>O<sub>3</sub><sub>-</sub>doped YSZ crystals showed emission peaks at 540, 551, 670, and 757 nm corresponding to Ho<sup>3+</sup> transitions from <sup>5</sup>S<sub>2</sub>, <sup>5</sup>F<sub>4</sub>, <sup>5</sup>F<sub>5</sub>, and <sup>5</sup>I<sub>4</sub> excited states to the <sup>5</sup>I<sub>8</sub> ground state, respectively. At low Ho<sub>2</sub>O<sub>3</sub>-doped concentrations (0.10–0.50 mol%), the overall emission intensity increased with Ho<sub>2</sub>O<sub>3</sub> contents, reached the maximum value at 0.50 mol%, then decreased with higher Ho<sub>2</sub>O<sub>3</sub> contents, probably as a result of increased non-radiative relaxation caused by increased interactions between Ho<sup>3+</sup> ions. Quenching of the PL occurred at Ho<sub>2</sub>O<sub>3</sub> concentrations > 0.5 mol% and due to the electric dipole–dipole interaction. The calculated chromaticity coordinates (CIE) were approximately (0.307, 0.683) and the color purity achieved 99.6%. The results showed that Ho<sub>2</sub>O<sub>3</sub>: YSZ crystals were suitable for green light-emitting devices. |
| first_indexed | 2024-03-09T19:58:05Z |
| format | Article |
| id | doaj.art-7ff15fc946d24a769f1a41f0f21cfe04 |
| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-09T19:58:05Z |
| publishDate | 2022-03-01 |
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| series | Crystals |
| spelling | doaj.art-7ff15fc946d24a769f1a41f0f21cfe042023-11-24T00:52:25ZengMDPI AGCrystals2073-43522022-03-0112341510.3390/cryst12030415Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single CrystalsYuhua Yang0Shoulei Xu1Siyao Li2Wenxia Wu3Yihua Pan4Daini Wang5Xing Hong6Zeyu Cheng7Wen Deng8School of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSchool of Physical Science and Technology, Guangxi University, 100 East Daxue Road, Nanning 530004, ChinaSingle crystals of Ho<sub>2</sub>O<sub>3</sub>-doped Y<sub>2</sub>O<sub>3</sub> stabilized ZrO<sub>2</sub> (YSZ) with different Y<sub>2</sub>O<sub>3</sub> and Ho<sub>2</sub>O<sub>3</sub> contents were grown by the optical floating zone method. XRD and Raman spectra were measured and showed that crystal samples all had tetragonal structures. Measurements of positron annihilation lifetime spectra indicated that the increase in Y<sub>2</sub>O<sub>3</sub> concentration led to the increases of defects and mean positron lifetime, which enhanced the scattering of light and reduced the luminous intensity and the quantum yield (QY) of the crystal. Under the excitation at 446 nm, photoluminescence (PL) spectra of Ho<sub>2</sub>O<sub>3</sub><sub>-</sub>doped YSZ crystals showed emission peaks at 540, 551, 670, and 757 nm corresponding to Ho<sup>3+</sup> transitions from <sup>5</sup>S<sub>2</sub>, <sup>5</sup>F<sub>4</sub>, <sup>5</sup>F<sub>5</sub>, and <sup>5</sup>I<sub>4</sub> excited states to the <sup>5</sup>I<sub>8</sub> ground state, respectively. At low Ho<sub>2</sub>O<sub>3</sub>-doped concentrations (0.10–0.50 mol%), the overall emission intensity increased with Ho<sub>2</sub>O<sub>3</sub> contents, reached the maximum value at 0.50 mol%, then decreased with higher Ho<sub>2</sub>O<sub>3</sub> contents, probably as a result of increased non-radiative relaxation caused by increased interactions between Ho<sup>3+</sup> ions. Quenching of the PL occurred at Ho<sub>2</sub>O<sub>3</sub> concentrations > 0.5 mol% and due to the electric dipole–dipole interaction. The calculated chromaticity coordinates (CIE) were approximately (0.307, 0.683) and the color purity achieved 99.6%. The results showed that Ho<sub>2</sub>O<sub>3</sub>: YSZ crystals were suitable for green light-emitting devices.https://www.mdpi.com/2073-4352/12/3/415yttria-stabilized zirconiaHo<sub>2</sub>O<sub>3</sub> dopedluminescence propertiesdefectsoptical floating zone method |
| spellingShingle | Yuhua Yang Shoulei Xu Siyao Li Wenxia Wu Yihua Pan Daini Wang Xing Hong Zeyu Cheng Wen Deng Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals Crystals yttria-stabilized zirconia Ho<sub>2</sub>O<sub>3</sub> doped luminescence properties defects optical floating zone method |
| title | Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals |
| title_full | Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals |
| title_fullStr | Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals |
| title_full_unstemmed | Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals |
| title_short | Luminescence Properties of Ho<sub>2</sub>O<sub>3</sub>-Doped Y<sub>2</sub>O<sub>3</sub> Stabilized ZrO<sub>2</sub> Single Crystals |
| title_sort | luminescence properties of ho sub 2 sub o sub 3 sub doped y sub 2 sub o sub 3 sub stabilized zro sub 2 sub single crystals |
| topic | yttria-stabilized zirconia Ho<sub>2</sub>O<sub>3</sub> doped luminescence properties defects optical floating zone method |
| url | https://www.mdpi.com/2073-4352/12/3/415 |
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