Vijay Singh, Aadil Ahmad Bhat, Abhijeet R. Kadam, S. Saravanakumar, Pankaj Kumar Tripathi, S. J. Dhoble, Ji Bong Joo
{"title":"在 CaTiO3 包晶石中优化掺杂 Ho3+，实现增强型光致发光和可持续绿色发射","authors":"Vijay Singh, Aadil Ahmad Bhat, Abhijeet R. Kadam, S. Saravanakumar, Pankaj Kumar Tripathi, S. J. Dhoble, Ji Bong Joo","doi":"10.1007/s11664-024-11345-w","DOIUrl":null,"url":null,"abstract":"<p>In this work, the synthesis of Ho<sup>3+</sup>-doped calcium titanate perovskite (CaTiO<sub>3</sub>) revealed significant photoluminescence (PL) properties, predominantly displaying a distinct green emission. The investigation explored Ho<sup>3+</sup>-doped CaTiO<sub>3</sub> perovskite synthesized via the sol–gel method. Structural analysis confirmed an orthorhombic crystal structure through powder x-ray diffraction (XRD) and Rietveld refinement, while Fourier transform infrared (FT-IR) spectroscopy confirmed the presence of functional groups in Ho<sup>3+</sup>-doped CaTiO<sub>3</sub>. Diffuse reflectance spectroscopy (DRS) revealed a charge transfer band between O<sup>2−</sup> and Ho<sup>3+</sup> ions in the range of 250–350 nm, supported by photoluminescence excitation (PLE) spectra. A bandgap of 3.39 eV was found for Ho<sup>3+</sup>-doped CaTiO<sub>3</sub>. At 0.03 mol Ho<sup>3+</sup>, the PLE band intensity was saturated, indicating optimal excitation efficiency. Emission spectra revealed distinct intra 4<i>f</i>–4<i>f</i> transitions, particularly a green emission at 545 nm under 454 nm excitation corresponding to <sup>5</sup>F<sub>4</sub> + <sup>5</sup>S<sub>2</sub> → <sup>5</sup>I<sub>8</sub> transition. The PL intensity reached its peak at 0.03 mol Ho<sup>3+</sup> and then decreased due to concentration quenching. Color purity reached ~90%, highlighting its potential in applications requiring precise green emission. The results of the study suggest that this perovskite is well suited for optoelectronics, lighting, displays, or industries that require specific green light emission properties.</p>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimal Doping of Ho3+ in CaTiO3 Perovskite for Enhanced Photoluminescence and Sustainable Green Emission\",\"authors\":\"Vijay Singh, Aadil Ahmad Bhat, Abhijeet R. Kadam, S. Saravanakumar, Pankaj Kumar Tripathi, S. J. Dhoble, Ji Bong Joo\",\"doi\":\"10.1007/s11664-024-11345-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>In this work, the synthesis of Ho<sup>3+</sup>-doped calcium titanate perovskite (CaTiO<sub>3</sub>) revealed significant photoluminescence (PL) properties, predominantly displaying a distinct green emission. The investigation explored Ho<sup>3+</sup>-doped CaTiO<sub>3</sub> perovskite synthesized via the sol–gel method. Structural analysis confirmed an orthorhombic crystal structure through powder x-ray diffraction (XRD) and Rietveld refinement, while Fourier transform infrared (FT-IR) spectroscopy confirmed the presence of functional groups in Ho<sup>3+</sup>-doped CaTiO<sub>3</sub>. Diffuse reflectance spectroscopy (DRS) revealed a charge transfer band between O<sup>2−</sup> and Ho<sup>3+</sup> ions in the range of 250–350 nm, supported by photoluminescence excitation (PLE) spectra. A bandgap of 3.39 eV was found for Ho<sup>3+</sup>-doped CaTiO<sub>3</sub>. At 0.03 mol Ho<sup>3+</sup>, the PLE band intensity was saturated, indicating optimal excitation efficiency. Emission spectra revealed distinct intra 4<i>f</i>–4<i>f</i> transitions, particularly a green emission at 545 nm under 454 nm excitation corresponding to <sup>5</sup>F<sub>4</sub> + <sup>5</sup>S<sub>2</sub> → <sup>5</sup>I<sub>8</sub> transition. The PL intensity reached its peak at 0.03 mol Ho<sup>3+</sup> and then decreased due to concentration quenching. Color purity reached ~90%, highlighting its potential in applications requiring precise green emission. The results of the study suggest that this perovskite is well suited for optoelectronics, lighting, displays, or industries that require specific green light emission properties.</p>\",\"PeriodicalId\":626,\"journal\":{\"name\":\"Journal of Electronic Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-08-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Electronic Materials\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s11664-024-11345-w\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Electronic Materials","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s11664-024-11345-w","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
Optimal Doping of Ho3+ in CaTiO3 Perovskite for Enhanced Photoluminescence and Sustainable Green Emission
In this work, the synthesis of Ho3+-doped calcium titanate perovskite (CaTiO3) revealed significant photoluminescence (PL) properties, predominantly displaying a distinct green emission. The investigation explored Ho3+-doped CaTiO3 perovskite synthesized via the sol–gel method. Structural analysis confirmed an orthorhombic crystal structure through powder x-ray diffraction (XRD) and Rietveld refinement, while Fourier transform infrared (FT-IR) spectroscopy confirmed the presence of functional groups in Ho3+-doped CaTiO3. Diffuse reflectance spectroscopy (DRS) revealed a charge transfer band between O2− and Ho3+ ions in the range of 250–350 nm, supported by photoluminescence excitation (PLE) spectra. A bandgap of 3.39 eV was found for Ho3+-doped CaTiO3. At 0.03 mol Ho3+, the PLE band intensity was saturated, indicating optimal excitation efficiency. Emission spectra revealed distinct intra 4f–4f transitions, particularly a green emission at 545 nm under 454 nm excitation corresponding to 5F4 + 5S2 → 5I8 transition. The PL intensity reached its peak at 0.03 mol Ho3+ and then decreased due to concentration quenching. Color purity reached ~90%, highlighting its potential in applications requiring precise green emission. The results of the study suggest that this perovskite is well suited for optoelectronics, lighting, displays, or industries that require specific green light emission properties.
期刊介绍：
The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications.
Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field.
A journal of The Minerals, Metals & Materials Society.
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