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Devi P, Sehrawat P, Sheoran M, Dalal H, Sehrawat N, Malik RK. Crystal Chemistry and Photoluminescent Aspects of Bright Orange Light Emitting Sm 3+- Activated Ba 2BiV 3O 11 Nanomaterials for Advanced Illuminating Applications. J Fluoresc 2024; 34:397-409. [PMID: 37278962 DOI: 10.1007/s10895-023-03275-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 05/16/2023] [Indexed: 06/07/2023]
Abstract
In the present system, Sm3+ activated Ba2BiV3O11 nanomaterial series radiating orange-red light was developed via an efficient approach of solution combustion method. The structural examinations using XRD analysis indicate that the sample is crystallized into the monoclinic phase with the P21/a (14) space group. The elemental composition and morphological conduct were studied via energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM) respectively. Also, the formation of nanoparticles was confirmed by transmission electron microscopy (TEM). Photoluminescent (PL) examinations reveal the orange-red emission from the developed nanocrystals via documenting the emission spectra, which reveals the peak at 606 nm due to the 4G5/2 → 6H7/2 transition. Further, the decay time, non-radiative rates, quantum efficiency, and band gap of the optimal sample were computed as 1.3263 ms, 219.5 s- 1, 70.88%, and 3.41 eV respectively. Finally, the chromatic parameters including color - coordinates (0.5565, 0.4426), 1975 K color correlated temperature (CCT), and color purity (85.58%) reflected their excellent luminous performance. The above-mentioned outcomes endorsed the relevancy of the developed nanomaterials as a propitious agent in the engineering of advanced illuminating optoelectronic appliances.
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Affiliation(s)
- Poonam Devi
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Priyanka Sehrawat
- Department of Chemistry, Sat Jinda Kalyana (P.G.) College, Kalanaur, Rohtak, 124001, India
| | - Monika Sheoran
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Hina Dalal
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Neeraj Sehrawat
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India
| | - Rajesh Kumar Malik
- Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India.
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Zhao B, Zeng F, Ru J, Chen S, Guo F. Luminescence and Energy Transfer of Li2Y4(MoO4)7:Ln (Ln = Dy, Tb) Phosphors. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422120081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Han C, Li X, Duan Y, Shen R, Cheng L, Guan Z, Xu S, Sun J, Yu H, Chen B. Photoluminescence, optical transition properties and temperature-induced shift of charge transfer band and temperature sensing property of GdNbTiO 6: Sm 3+ phosphors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 260:119951. [PMID: 34049007 DOI: 10.1016/j.saa.2021.119951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/09/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
GdNbTiO6: Sm3+ phosphors with various Sm3+ concentrations were prepared via a high temperature solid-state reaction method. The crystal structure of the samples was characterized by means of X-ray diffraction (XRD) and the as-prepared samples were confirmed to be orthorhombic phase GdNbTiO6. Photoluminescence properties were investigated by measuring the concentration- and temperature-dependent photoluminescence spectra. Concentration-dependent luminescence quenching and luminescent thermal quenching behaviors were observed and they were respectively ascribed to the electric dipole-dipole interaction between Sm3+ ions and the cooperation of energy transfer and crossover process. The chromatic characteristics were found to be dependent on the excitation wavelength and Sm3+ concentration. In addition, temperature-induced redshift of charge transfer band of GdNbTiO6 host was found in temperature-dependent excitation spectra and the opposite variations of different excitation peaks were utilized for optical thermometry. Finally, the optical transition property was studied on the basis of the diffuse reflectance spectra and Judd-Ofelt (J-O) theory, meanwhile, its accuracy was evaluated by the result of emission spectra.
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Affiliation(s)
- Cong Han
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Xiangping Li
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China.
| | - Yangyinyi Duan
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Rensheng Shen
- School of Microelectronics, Dalian University of Technology, Dalian, Liaoning 116024, PR China.
| | - Lihong Cheng
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Zhipeng Guan
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Sai Xu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Jiashi Sun
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Hongquan Yu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Baojiu Chen
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China.
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Yang X, Chen J, Zheng S, Chen C. A downshifting Eu3+ doped glass embedded with concave pyramid microstructure to improve the efficiency of silicon solar cell. J RARE EARTH 2020. [DOI: 10.1016/j.jre.2019.11.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Tailoring the tunable luminescence from novel Sm3+ doped SLAO nanomaterials for NUV-excited WLEDs. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2020.137758] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Phatak R, Gupta SK, Maheshwari P, Das A, Sali SK. Crystal structure of Ba 2(La 0.727Ba 0.182M 0.091)MO 6 (M = Nb, Sb, Bi): symmetry nuance identified in photoluminescence and IR spectroscopy studies. Dalton Trans 2017; 46:1694-1703. [PMID: 28102388 DOI: 10.1039/c6dt04124h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-third lanthanum deficiency was created in Ba2LaM5+O6 compounds (LaM compounds) to form Ba2La2/3M5+O5.5 compounds (La2/3M compounds) for M = Nb, Sb, and Bi. The compounds were prepared by a gel-combustion method using citric acid as a fuel. All the compounds were characterized by powder X-ray diffraction (XRD). The XRD analysis showed that the space group of the La2/3M compounds remains the same for the Bi and Sb samples when compared to the reported LaM compounds, except for the Nb sample. La2/3Nb and La2/3Sb adopt a rhombohedral structure with the space group R3[combining macron], whereas La2/3Bi adopts a monoclinic structure with the space group I2/m. As the positron annihilation spectroscopy (PALS) technique is sensitive to cation deficiency, it was used to detect the presence of cation vacancies in the samples, which are formed due to the decrease in the lanthanum concentration. The PALS analyses indicated that the absence of cation deficiency in the La2/3M compounds is similar to that observed in the LaM compound. Thus, the crystal structure of the La2/3M compound was modeled, such that the cation deficiency at the La site is filled by Ba2+ and M5+ ions, and the crystal structure formula is given as Ba2(La0.727Ba0.182M0.091)MO6. This model was confirmed by Rietveld refinement of the XRD data. The emission spectra of Eu3+ showed a strong dependence on its local site symmetry in the host material, in which it is being doped and this can be used as a spectroscopic probe for detecting any differences in the symmetry. Comparison of the local symmetry around La3+ cation was studied using photoluminescence (PL) by doping 2 atom% Eu3+ in LaM and La2/3M compounds. Infrared spectroscopy (IRS) analyses were also carried out for LaM and La2/3M compounds. There was complete agreement between the PL and IRS results and they were also in concordance with the predicted crystal structure model. Interestingly in these La2/3M compounds, the equilibrium structure prefers large Ba2+ ion to occupy the octahedral B-site rather than forming an octahedral vacancy at that site, making these perovskite compounds rare and novel in their class.
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Affiliation(s)
- Rohan Phatak
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India. and Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai-400094, India
| | - Santosh K Gupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
| | - Priya Maheshwari
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
| | - Amitabh Das
- Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
| | - Sanjay K Sali
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India.
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Su LM, Fan X, Cai GM, Jin ZP. A peculiar layered 12-fold cationic coordination compound LiInTi2O6: phase relations, crystal structure and color-tunable photoluminescence. RSC Adv 2017. [DOI: 10.1039/c7ra01891f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Color-tunable white-lighting photoluminescence was achieved in a peculiar layered 12-fold cationic coordination host, LiInTi2O6.
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Affiliation(s)
- Liu-Mei Su
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
- Education Ministry Key Laboratory of Non-ferrous Materials Science and Engineering
| | - Xing Fan
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
- Education Ministry Key Laboratory of Non-ferrous Materials Science and Engineering
| | - Ge-Mei Cai
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
- Education Ministry Key Laboratory of Non-ferrous Materials Science and Engineering
| | - Zhan-Peng Jin
- School of Materials Science and Engineering
- Central South University
- Changsha
- P. R. China
- Education Ministry Key Laboratory of Non-ferrous Materials Science and Engineering
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