1
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Liu Y, Li Z, Zhang W, Yan X, Guo P, Yan J. An efficient rare-earth free deep red-emitting GdGeSbO 6:Mn 4+ phosphor for white light-emitting diodes. Dalton Trans 2024; 53:11800-11808. [PMID: 38940764 DOI: 10.1039/d4dt01434k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Red phosphors play an important role in improving the light quality and color rendering index of white light-emitting diodes (WLEDs) for lighting. In this paper, we report the transition ion Mn4+-activated deep red phosphor GdGeSbO6:x%Mn4+ and analyze its crystal structure, composition and luminescence behavior in detail. Its optimal doping concentration of Mn4+ is 0.3%. Under ultraviolet (UV) excitation, GdGeSbO6:0.3%Mn4+ produces a narrow emission peak centred at 682 nm in the range of 650-800 nm with a full width at half maximum (FWHM) of 25 nm, which is attributed to the spin-prohibited 2Eg → 4A2g transition of Mn4+ ions. Notably, the optimal phosphor GdGeSbO6:0.3%Mn4+ has a high internal quantum efficiency (IQE ≈ 65%) and excellent thermal stability performance (I423 K/I303 K ≈ 62%). The synthesis of high-performance warm WLEDs and full-spectrum WLEDs was achieved by combining and coating GdGeSbO6:0.3%Mn4+ phosphors with commercial phosphors on the surface of a 365 nm UV chip.
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Affiliation(s)
- Yujia Liu
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Zhongfa Li
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Wenjun Zhang
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Xinyue Yan
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Peng Guo
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
| | - Jiayi Yan
- School of Chemical Engineering, Hebei University of Technology, Tianjin, 300130, China.
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2
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Kaur S, Kumar V, Rao AS. Deep red emission from rare-earth-free calcium aluminozincate phosphor with the substitution of Cr 3+ ion. RSC Adv 2023; 13:16663-16670. [PMID: 37274394 PMCID: PMC10236934 DOI: 10.1039/d3ra02129g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/14/2023] [Indexed: 06/06/2023] Open
Abstract
Chromium-doped calcium aluminozincate phosphor with a distinct amount of chromium was prepared via the sol-gel technique. The phase analysis and morphological study along with optical properties were conducted on the prepared material. The room temperature luminescent traits of the sample were studied in detail under 540 nm excitation wavelength. The deep red emission was confirmed from the CIE coordinates calculated using emission data. The decay curves were recorded to calculate the lifetime values for the aforementioned powder samples. The temperature-dependent luminescent characteristics were also investigated to identify the activation energy and thermal stability. The quantum yield was also calculated using luminescence spectra and found to be relatively good for the present phosphor. All of the investigated studies specified above signify that the synthesized phosphor is well suited as a red emitter in lighting and display devices.
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Affiliation(s)
- Sumandeep Kaur
- Department of Applied Physics, Delhi Technological University Shahbad Daulatpur, Bawana Road New Delhi 110 042 India
| | - Videsh Kumar
- Department of Applied Physics, Delhi Technological University Shahbad Daulatpur, Bawana Road New Delhi 110 042 India
| | - A S Rao
- Department of Applied Physics, Delhi Technological University Shahbad Daulatpur, Bawana Road New Delhi 110 042 India
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3
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Double Perovskite Mn 4+-Doped La 2CaSnO 6/La 2MgSnO 6 Phosphor for Near-Ultraviolet Light Excited W-LEDs and Plant Growth. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227697. [PMID: 36431800 PMCID: PMC9692517 DOI: 10.3390/molecules27227697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 10/30/2022] [Accepted: 11/05/2022] [Indexed: 11/11/2022]
Abstract
Non-rare earth doped oxide phosphors with far-red emission have become one of the hot spots of current research due to their low price and excellent physicochemical stability as the red component in white light-emitting diodes (W-LEDs) and plant growth. Herein, we report novel Mn4+-doped La2CaSnO6 and La2MgSnO6 phosphors by high-temperature solid-phase synthesis and analyzed their crystal structures by XRD and Rietveld refinement. Their excitation spectra consist of two distinct excitation bands with the dominant excitation range from 250 to 450 nm, indicating that they possess strong absorption of near-ultraviolet light. Their emission is located around 693 and 708 nm, respectively, and can be absorbed by the photosensitive pigments Pr and Pfr, proving their great potential for plant growth. Finally, the prepared samples were coated with 365 nm UV chips to fabricate far-red LEDs and W-LEDs with low correlation color temperature (CCT = 4958 K/5275 K) and high color rendering index (Ra = 96.4/96.6). Our results indicate that La2CaSnO6:Mn4+ and La2MgSnO6:Mn4+ red phosphors could be used as candidate materials for W-LED lighting and plant growth.
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4
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Wang J, Lu J, Wu Y, Song M. Luminescence of Mn 4+ in a Zero-Dimensional Organic-Inorganic Hybrid Phosphor [N(CH 3) 4] 2ZrF 6 for Dual-Mode Temperature Sensing. MATERIALS (BASEL, SWITZERLAND) 2022; 15:ma15196543. [PMID: 36233903 PMCID: PMC9570700 DOI: 10.3390/ma15196543] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/15/2022] [Accepted: 09/17/2022] [Indexed: 05/14/2023]
Abstract
Searching for new low-dimensional organic-inorganic hybrid phosphors is of great significance due to their unique optical properties and wide applications in the optoelectronic field. In this work, we report a Mn4+ doped zero-dimensional organic-inorganic hybrid phosphor [N(CH3)4]2ZrF6, which was synthesized by a wet chemical method. The crystal structure, thermal stability, and optical properties were systemically investigated by means of XRD, SEM, TG-DTA, FTIR, DRS, emission spectra, excitation spectra, as well as decay curves. Narrow red emission with high color purity can be observed from [N(CH3)4]2ZrF6:Mn4+ phosphor, which maintains effective emission intensity even at room temperature, indicating its potential practical application in WLEDs. In the temperature range of 13-295 K, anti-Stokes and Stokes sidebands of Mn4+ ions exhibit different temperature responses. By applying the emission intensity ratio of anti-Stokes vs. Stokes sidebands as temperature readout, an optical thermometer with a maximum absolute sensitivity of 2.13% K-1 and relative sensitivity of 2.47% K-1 can be obtained. Meanwhile, the lifetime Mn4+ ions can also be used for temperature sensing with a maximum relative sensitivity of 0.41% K-1, demonstrating its potential application in optical thermometry.
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5
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Hua Y, Qiu X, Sonne C, Brown RJC, Kim KH. Construction of novel luminescent thermometers based on dual-emission centers of rare-earth and bismuth ions. CHEMOSPHERE 2022; 303:135150. [PMID: 35660390 DOI: 10.1016/j.chemosphere.2022.135150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Revised: 04/29/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Optical thermometry based on fluorescence intensity ratio (FIR) technology has several advantages for industrial and medical applications such as remote signaling, non-invasiveness, and excellent spatial resolution. Here, an approach to the construction of luminescent thermometers is proposed based on high-temperature solid-state reactions through doping of rare earth (RE) elements (e.g., samarium (Sm3+) or europium (Eu3+)) into Ca2Y0.97Bi0.03SbO6 (CYBS) phosphors. The tuning of the CYBS:Eu3+ and CYBS:Sm3+ ratios in the phosphors provided a wide range of color changes from purplish blue to red and from purplish blue to pink, respectively. The superiority of optical thermometer is validated by higher values of absolute sensitivity (Sa) and relative sensitivity (Sr). As such, both phosphors exhibit excellent temperature sensing performance with Sa/Sr values (at 483 K) of 4.945 × 10-2/0.968 × 10-2 K-1 (CYBS:0.05Eu3+) and 2.964 × 10-2/0.864 × 10-2 K-1 (CYBS:0.05 Sm3+). Thus, RE-doped CYBS materials with color tuning properties and superior temperature sensing performance are recommended for the construction of novel luminescent optical thermometers.
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Affiliation(s)
- Yongbiao Hua
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea
| | - Xiuzhen Qiu
- College of Chemistry and Civil Engineering, Shaoguan University, Shaoguan, 512005, Guangdong, China
| | - Christian Sonne
- Department of Ecoscience, Aarhus University, Frederiksborgvej 399, DK-4000, Roskilde, Denmark; Henan Agricultural University, Zhengzhou, 450002, China
| | - Richard J C Brown
- National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, UK
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul, 04763, South Korea.
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6
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Cao Z, Dong S, Shi S, Wang J, Fu L. Solid state reaction preparation of an efficient rare-earth free deep-red Ca2YNbO6:Mn4+ phosphor. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122840] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Ma H, Tao S, Hua Y, Zheng J, Lou L, Ping Y, Qiao P. A study of negative-thermal-quenching (Ba/Ca)AlSi 5O 2N 7:Eu 2+ phosphors. Dalton Trans 2021; 50:17792-17799. [PMID: 34821887 DOI: 10.1039/d1dt02752b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phosphor is an important part of the new generation of light-emitting diodes (LEDs), which requires high luminous intensity and high-temperature resistance. In this study, a series of excellent (Ba1-x-yCax)AlSi5O2N7:yEu2+ phosphors was developed, which were synthesized by a high-temperature solid-state reaction in a reducing atmosphere. In addition, the crystallinity and luminescence intensity of the samples could be enhanced by some amount of Ca2+ substitution. The luminescence intensity was the highest when the Eu2+ concentration reached 0.06. Furthermore, the thermal stability of the luminescence was studied in detail. The results were satisfactory, showing that the luminescence intensity of the (Ba1-xCax)AlSi5O2N7:Eu2+ phosphors exhibited unique negative-thermal-quenching characteristics both at high (273-473 K) and low (4-273 K) temperatures. And the phosphor combined with UV LED chip and red phosphor Sr2Si5N8:Eu2+ can achieve a CRI of 90.4 in white LED application which indicated the (Ba1-xCax)AlSi5O2N7:Eu2+ phosphor has potential in LED applications.
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Affiliation(s)
- Hongping Ma
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Shixu Tao
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Youjie Hua
- College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China
| | - Jun Zheng
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Luyi Lou
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Yiheng Ping
- School of Mechanical and Energy Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Peng Qiao
- Zhejiang Academy of Special Equipment Science, Hangzhou 314415, China
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8
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Li G, Shi X, Lu X, Mao Q, Pei L, Zhu Y, Liu M, Chu L, Zhong J. Local Structure Modulation-Induced Highly Efficient Red-Emitting Ba 2Gd 1-xY xNbO 6:Mn 4+ Phosphors for Warm WLEDs. Inorg Chem 2021; 60:17398-17406. [PMID: 34723491 DOI: 10.1021/acs.inorgchem.1c02969] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Modulating the crystal field environment around the emitting ions is an effective strategy to improve the luminescence performance of the practical effective phosphor materials. Here, smaller Y3+ ions are introduced into substituting the Gd3+ sites in Ba2GdNbO6:Mn4+ phosphor to modify the optical properties, including the enhanced luminescence intensity, redshift, and longer lifetime of the Mn4+ ions. The substitution of smaller Y3+ ions leads to lattice contraction and then strengthens pressure on the local structure, enhances lattice rigidity, and suppresses nonradiative transition. Moreover, the prototype phosphor-converted light-emitting diode (LED) demonstrates a continuous change photoelectric performance with a correlated color temperature of 4883-7876 K and a color rendering index of 64.1-83.2, suggesting that it can be one of the most prospective fluorescent materials applied as a warm red component for white LEDss. Thus, the smaller ion partial substitution can provide a concise approach to modulate the crystal field environment around the emitting ions for excellent luminescence properties of phosphors toward the modern artificial light.
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Affiliation(s)
- Guixian Li
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xingyang Shi
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xinyue Lu
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Qinan Mao
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Lang Pei
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yiwen Zhu
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Meijiao Liu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Liang Chu
- New Energy Technology Engineering Laboratory of Jiangsu Province, College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Jiasong Zhong
- Center of Advanced Optoelectronic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
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9
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Fang Y, Wang C, Zhang Y, Zhao G, Liu Y, Liu Z, Che Lin C, Hou J. Preparation of far-red emitting Ba2YTaO6:Mn4+ phosphors for plant growth LEDs applications. INORG CHEM COMMUN 2021. [DOI: 10.1016/j.inoche.2021.108568] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Synthesis, crystal structure and photoluminescence properties of novel far-red-emitting SrLaZnSbO6:Mn4+ double-perovskite phosphors for plant cultivation LEDs. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113166] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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11
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Rajendran M, Vaidyanathan S. High performance red/deep-red emitting phosphors for white LEDs. NEW J CHEM 2020. [DOI: 10.1039/d0nj00086h] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
NaSrGd(MoO4)3:Eu3+ red phosphor exhibits higher quantum efficiency (82%) and the fabricated white LED showed 74% CRI and 6823 K CCT.
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12
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Shi L, Han YJ, Wang S, Liu H, Li XZ, Zhao LT, Hou LN, Zhang ZW, Lu XL. Highly efficient and thermally stable CaMgLaSbO6:Mn4+ red phosphor for indoor plant growth. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107607] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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13
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Huang D, Dang P, Lian H, Zeng Q, Lin J. Luminescence and Energy-Transfer Properties in Bi 3+/Mn 4+-Codoped Ba 2GdNbO 6 Double-Perovskite Phosphors for White-Light-Emitting Diodes. Inorg Chem 2019; 58:15507-15519. [PMID: 31652050 DOI: 10.1021/acs.inorgchem.9b02558] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Currently, the study of Mn4+-doped oxide red phosphor is a hot research topic to solve the lack of red component in phosphor-converted white-light-emitting diodes (pc-WLEDs). In this Article, we designed Gd3+/Nb5+ cation substitution by Bi3+/Mn4+ in Ba2GdNbO6 with double-perovskite structure based on the radius and coordination of the cations through high-temperature solid-state reaction. The phase purity and microstructure of double-perovskite Ba2GdNbO6:Bi3+,Mn4+ phosphors were characterized by X-ray diffraction and scanning electron microscopy examination. The crystal structures were also determined by the Rietveld refinement, and the photoluminescence (PL) properties were systematically studied. Bi3+ and Mn4+ ions can be effectively doped in the Ba2GdNbO6 matrix with an optical band gap of 3.94 eV. Upon 315 nm UV excitation, the Ba2GdNbO6:Bi3+,Mn4+ phosphor shows two emission bands at 464 nm from Bi3+ and 689 nm from Mn4+, respectively. By the design of Bi3+ → Mn4+ energy transfer, systematic luminescence tuning from blue to red could be achieved because of spectral overlap between the emission spectrum of Bi3+ and the excitation spectrum of Mn4+. The corresponding mechanism of the Bi3+ → Mn4+ energy-transfer process was investigated in detail by the fluorescence decays and PL spectra. The red emission intensity of Mn4+ has been greatly improved by Bi3+ → Mn4+ energy transfer. Moreover, the phonon vibration and zero phonon line of Mn4+ were studied through temperature-dependent PL. Finally, a WLED was fabricated using a 460 nm blue chip with a yellow YAG:Ce3+ phosphor and a red Ba2GdNbO6:0.01Bi3+,0.01Mn4+ phosphor, which has a low correlated color temperature (3550 K) and a high color rendering index (89.6). The above results imply that the improved red emission phosphors have a potential application in warm pc-WLED lighting.
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Affiliation(s)
- Dayu Huang
- School of Applied Physics and Materials , Wuyi University , Jiangmen , Guangdong 529020 , P. R. China.,State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China
| | - Peipei Dang
- State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Hongzhou Lian
- State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China
| | - Qingguang Zeng
- School of Applied Physics and Materials , Wuyi University , Jiangmen , Guangdong 529020 , P. R. China
| | - Jun Lin
- School of Applied Physics and Materials , Wuyi University , Jiangmen , Guangdong 529020 , P. R. China.,State Key Laboratory of Rare Earth Resource Utilization , Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022 , P. R. China.,University of Science and Technology of China , Hefei 230026 , P. R. China
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14
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Sun Q, Wang S, Devakumar B, Sun L, Liang J, Huang X. Synthesis, Crystal Structure, and Photoluminescence Characteristics of High-Efficiency Deep-Red Emitting Ba 2GdTaO 6:Mn 4+ Phosphors. ACS OMEGA 2019; 4:13474-13480. [PMID: 31460476 PMCID: PMC6705246 DOI: 10.1021/acsomega.9b01787] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 07/24/2019] [Indexed: 06/10/2023]
Abstract
In this article, a series of novel Mn4+-doped Ba2GdTaO6 (BGT) red-emitting phosphors were successfully synthesized via a high-temperature solid-state method. The crystal structure, morphology, and luminescent performance of the samples were investigated in detail with X-ray diffraction, field emission scanning electron microscopy, photoluminescence (PL) spectra, decay curves, and internal quantum efficiency (IQE). Excited at 358 nm, these samples showed an intense deep-red emission band peaking at 688 nm in the wavelength region of 620-800 nm. The excitation spectra of these samples monitored at 688 nm exhibited two broad excitation bands from 250 to 600 nm with peaks at 358 and 469 nm. The systematic investigation of the concentration-dependent PL properties of BGT:Mn4+ phosphors revealed that the deep-red emission intensity reached the maximum when the Mn4+ doping concentration was 0.6 mol %. The critical distance (R c) between Mn4+ ions for concentration quenching was 36.57 Å, and the major mechanism of energy transfer among Mn4+ activators in BGT:Mn4+ was dipole-dipole interaction. The decay lifetimes decreased from 0.285 to 0.248 ms with the increasing Mn4+ doping concentration from 0.2 to 1.2 mol %. The Commission Internationale de l'Éclairage coordinates of the optimal BGT:0.6%Mn4+ sample were (0.7294, 0.2706). The values of the IQE for all BGT:Mn4+ samples were measured, and the highest value could reach up to 62%. The above results revealed that these high-efficiency BGT:Mn4+ deep-red-emitting phosphors had promising potential for application in indoor plant growth lighting.
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Affiliation(s)
- Qi Sun
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
| | - Shaoying Wang
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
| | - Balaji Devakumar
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
| | - Liangling Sun
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
| | - Jia Liang
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
| | - Xiaoyong Huang
- College of Physics
and Optoelectronics, Taiyuan University
of Technology, Taiyuan 030024, P. R. China
- Institute for Advanced Study, Shenzhen
University, Nanhai Avenue 3688, Shenzhen 518060, P. R. China
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15
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Qian T, Fan B, Wang H, Zhu S. Structure and luminescence properties of Zn3V2O8 yellow phosphor for white light emitting diodes. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.11.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Wang S, Sun Q, Devakumar B, Liang J, Sun L, Huang X. Mn4+-activated Li3Mg2SbO6 as an ultrabright fluoride-free red-emitting phosphor for warm white light-emitting diodes. RSC Adv 2019; 9:3429-3435. [PMID: 35518958 PMCID: PMC9060266 DOI: 10.1039/c8ra10158b] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 01/19/2019] [Indexed: 12/03/2022] Open
Abstract
In this paper, we report on highly efficient Mn4+-activated double perovskite Li3Mg2SbO6 (LMS) red-emitting phosphors. These LMS:Mn4+ phosphors can be efficiently excited over a broad wavelength band from 235 nm to 600 nm peaking at 344 nm and 469 nm, and exhibited an intense red emission band with a range from 600 nm to 800 nm centered around 651 nm. The optimal Mn4+ doping concentration of LMS:Mn4+ was 0.6 mol% and its internal quantum efficiency can reach as high as 83%. Besides, the thermal quenching effect on the optical property was also analyzed. Finally, a warm white light-emitting diode (WLED) lamp was fabricated by using a 454 nm InGaN blue LED chip combined with a blend of YAG:Ce3+ yellow phosphors and the as-prepared LMS:0.6% Mn4+ red phosphors, which showed bright white light with CIE chromaticity coordinates (0.4093, 0.3725), correlated color temperature (CCT = 3254 K), color rendering index (CRI = 81) and luminous efficacy (LE = 87 lm/W). Mn4+-activated Li3Mg2SbO6 red-emitting phosphor with internal quantum efficiency as high as 83% was developed for blue-pumped warm-white light-emitting diodes.![]()
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Affiliation(s)
- Shaoying Wang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Qi Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Balaji Devakumar
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Jia Liang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Liangling Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiaoyong Huang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
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17
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Dong Q, Cui J, Tian Y, Jia J, Yang F, Du F, Peng J, Ye X, Yang S. Enhanced narrow-band green-emission and thermal stability via the introduction of Mg 2+ in ZnB 2O 4:Mn 2+ phosphor. CrystEngComm 2019. [DOI: 10.1039/c9ce01123d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The introduction of Mg2+ in ZnB2O4:Mn2+ may reduce the impurity phase, and increase the emission intensity and thermal stability by 100% and 9%, respectively. The mechanism is considered to be the ion-size compensation effect of Mg2+ to Mn2+.
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Affiliation(s)
- Quan Dong
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Jun Cui
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Yabin Tian
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
| | - Junjie Jia
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Fengli Yang
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Fu Du
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Jiaqing Peng
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Xinyu Ye
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
- Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province
| | - Shaohua Yang
- School of Metallurgical Engineering
- Jiangxi University of Science and Technology
- Ganzhou 341000
- P.R. China
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18
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Hong F, Cheng H, Song C, Liu G, Yu W, Wang J, Dong X. Novel polygonal structure Mn4+ activated In3+-based Elpasolite-type hexafluorides red phosphor for warm white light-emitting diodes (WLEDs). Dalton Trans 2019; 48:1376-1385. [DOI: 10.1039/c8dt04690e] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Red phosphors (NH4)2NaInF6:Mn4+ with controllable morphology were synthesized via different synthetic methods, which can be fabricated for warm white LEDs.
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Affiliation(s)
- Feng Hong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Haiming Cheng
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Chao Song
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun
- P. R. China
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19
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Chen Y, Yang C, Deng M, He J, Xu Y, Liu ZQ. A highly luminescent Mn4+ activated LaAlO3 far-red-emitting phosphor for plant growth LEDs: charge compensation induced Mn4+ incorporation. Dalton Trans 2019; 48:6738-6745. [DOI: 10.1039/c9dt00762h] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A highly luminescent far-red-emitting phosphor LaAlO3:Mn4+,Mg2+ with a quantum yield of 78.6% synthesized with the assistance of MgF2.
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Affiliation(s)
- Yibo Chen
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials
- Guangzhou University
- Guangzhou 510006
- P.R. China
| | - Conghua Yang
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials
- Guangzhou University
- Guangzhou 510006
- P.R. China
| | - Meiping Deng
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials
- Guangzhou University
- Guangzhou 510006
- P.R. China
| | - Jin He
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials
- Guangzhou University
- Guangzhou 510006
- P.R. China
| | - Yiqin Xu
- Guangdong Institute of Semiconductor Industrial Technology
- Guangzhou 510650
- P.R. China
| | - Zhao-Qing Liu
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials
- Guangzhou University
- Guangzhou 510006
- P.R. China
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20
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Zhong J, Chen D, Yuan S, Liu M, Yuan Y, Zhu Y, Li X, Ji Z. Tunable Optical Properties and Enhanced Thermal Quenching of Non-Rare-Earth Double-Perovskite (Ba1–xSrx)2YSbO6:Mn4+ Red Phosphors Based on Composition Modulation. Inorg Chem 2018; 57:8978-8987. [DOI: 10.1021/acs.inorgchem.8b00947] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Jiasong Zhong
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Daqin Chen
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
- College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, P. R. China
| | - Shuo Yuan
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Meijiao Liu
- Department of Chemistry, Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Education Ministry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yongjun Yuan
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yiwen Zhu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Xinyue Li
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Zhenguo Ji
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
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21
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Sun L, Devakumar B, Liang J, Li B, Wang S, Sun Q, Guo H, Huang X. Thermally stable La2LiSbO6:Mn4+,Mg2+far-red emitting phosphors with over 90% internal quantum efficiency for plant growth LEDs. RSC Adv 2018; 8:31835-31842. [PMID: 35547514 PMCID: PMC9085872 DOI: 10.1039/c8ra06435k] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/05/2018] [Indexed: 01/29/2023] Open
Abstract
In this paper, we reported on the high-efficiency and thermally-stable La2LiSbO6:Mn4+,Mg2+ (LLS:Mn4+,Mg2+) far-red emitting phosphors. Under 338 nm excitation, the composition-optimized LLS:0.3%Mn4+,1.6%Mg2+ phosphors which were made up of [SbO6], [LiO6], and [LaO8] polyhedrons, showed intense far-red emissions peaking at 712 nm (2Eg → 4A2g transition) with internal quantum efficiency as high as 92%. The LLS:0.3%Mn4+,1.6%Mg2+ phosphors also exhibited high thermal stability, and the emission intensity at 423 K only reduced by 42% compared with its initial value at 303 K. The far-red light-emitting device has also been made by using the LLS:0.3%Mn4+,1.6%Mg2+ phosphors and a 365 nm emitting InGaN chip, which can emit far-red light that is visible to the naked eye. Importantly, the emission spectrum of the LLS:0.3%Mn4+,1.6%Mg2+ phosphors can match well with the absorption spectrum of phytochrome PFR, indicating the potential of these phosphors to be used in plant growth light-emitting diodes. Double perovskite La2LiSbO6:Mn4+,Mg2+ far-red emitting phosphors with internal quantum efficiency as high as 92% and good thermal stability were developed for plant growth LEDs.![]()
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Affiliation(s)
- Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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22
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Sankarasubramanian K, Devakumar B, Annadurai G, Sun L, Zeng YJ, Huang X. Novel SrLaAlO4:Mn4+deep-red emitting phosphors with excellent responsiveness to phytochrome PFRfor plant cultivation LEDs: synthesis, photoluminescence properties, and thermal stability. RSC Adv 2018; 8:30223-30229. [PMID: 35546816 PMCID: PMC9085373 DOI: 10.1039/c8ra06356g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 08/22/2018] [Indexed: 11/25/2022] Open
Abstract
Herein, novel rare-earth-free Mn4+-doped SrLaAlO4 deep-red emitting phosphors were successfully synthesized via a traditional solid-state reaction method. The crystal structure and phase purity of the as-prepared samples were confirmed by XRD Rietveld refinement. Photoluminescence properties of SrLaAlO4:Mn4+ phosphors were examined in detail using photoluminescence spectra, decay lifetimes, temperature-dependent emission spectra and internal quantum efficiency measurements. The excitation spectrum obtained by monitoring at 730 nm contained two excitation bands centered at 364 and 520 nm within the range of 200–550 nm due to the Mn4+–O2− charge-transfer band and the 4A2g → 4T1g, 4T2g transitions of the Mn4+ ions. Under the 364 nm excitation, the SrLaAlO4:Mn4+ phosphors exhibited an intense deep-red emission band in 610–790 nm wavelength range peaking at 730 nm, which was assigned to the 2Eg → 4A2g transition of Mn4+ ions. The deep red emission showed excellent responsiveness to phytochrome PFR, revealing that the SrLaAlO4:0.4% Mn4+ phosphors possessed a possible application in deep-red light-emitting diodes (LEDs) for plant cultivation. The optimal doping concentration of Mn4+ ions was found to be 0.4 mol%. The critical distance Rc for energy transfer among Mn4+ ions was determined to be 5.86 Å and the concentration quenching mechanism was confirmed to be the electric dipole–dipole interaction. In addition, the Commission International de I'Eclairage (CIE) colour coordinates of the SrLaAlO4:0.4% Mn4+ phosphors (0.734, 0.266) were located in the deep red region and the corresponding internal quantum efficiency was measured to be about 29%. The above results confirmed that the as-prepared SrLaAlO4:0.4% Mn4+ deep red emitting phosphors might be a potential candidate for plant cultivation LEDs. Novel Mn4+ activated SrLaAlO4 deep-red emitting phosphors with excellent responsiveness to phytochrome PFR were developed for plant cultivation LEDs.![]()
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Affiliation(s)
- K. Sankarasubramanian
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - G. Annadurai
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Yu-Jia Zeng
- Shenzhen Key Laboratory of Laser Engineering
- College of Optoelectronic Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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23
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Sun Q, Wang S, Devakumar B, Li B, Sun L, Liang J, Chen D, Huang X. Novel far-red-emitting SrGdAlO4:Mn4+ phosphors with excellent responsiveness to phytochrome PFR for plant growth lighting. RSC Adv 2018; 8:39307-39313. [PMID: 35558049 PMCID: PMC9090720 DOI: 10.1039/c8ra08551j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 11/19/2018] [Indexed: 12/20/2022] Open
Abstract
In this work, we reported on novel far-red-emitting SrGdAlO4:Mn4+ (SGA:Mn4+) phosphors towards application in plant growth lighting. The crystal structure and luminescence properties were investigated on the basis of X-ray diffraction, excitation and emission spectra, luminescence decay curves and temperature-dependent photoluminescence spectra. When excited by 353 nm, the SGA:Mn4+ phosphors showed a far-red emission band in the 650–800 nm wavelength range with peaks at 709 and 725 nm, which was due to the 2Eg → 4A2g electron transition of Mn4+ ion. The optimal Mn4+ doping concentration was about 0.1 mol%. The CIE chromaticity coordinates of the SGA:0.1%Mn4+ sample were (0.7064, 0.2934). The luminescence decay lifetimes decreased gradually from 1.263 to 0.868 ms with the increasing Mn4+ concentrations. Notably, the emission band of SGA:0.1%Mn4+ sample was well-matched with the absorption spectrum of phytochrome PFR, which indicated the SGA:Mn4+ were potential far-red-emitting phosphors for plant growth applications. In this paper, we reported on novel Mn4+-activated SrGdAlO4 far-red-emitting phosphors with excellent responsiveness to phytochrome PFR for potential application in plant growth lighting.![]()
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Affiliation(s)
- Qi Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Shaoying Wang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Balaji Devakumar
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Bin Li
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Liangling Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Jia Liang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Daqin Chen
- College of Physics and Energy
- Fujian Normal University
- Fuzhou
- P. R. China
| | - Xiaoyong Huang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
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24
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Sun Q, Wang S, Devakumar B, Li B, Sun L, Liang J, Huang X. Synthesis and photoluminescence properties of novel far-red-emitting BaLaMgNbO6:Mn4+ phosphors for plant growth LEDs. RSC Adv 2018; 8:28538-28545. [PMID: 35548391 PMCID: PMC9084396 DOI: 10.1039/c8ra06048g] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 08/03/2018] [Indexed: 11/21/2022] Open
Abstract
A series of far-red-emitting BaLaMgNbO6:Mn4+ (BLMN:Mn4+) phosphors were successfully synthesized by a high-temperature solid-state reaction method. Crystal structure and luminescence properties of the obtained samples were systematically investigated. The emission spectra exhibited a strong narrow far-red emission band peaking at 700 nm with a full width at half-maximum (FWHM) of ∼36 nm under 360 nm excitation. The optimal Mn4+ concentration was about 0.4 mol%. The internal quantum efficiency and CIE chromaticity coordinates of the BLMN:0.4% Mn4+ phosphor were 52% and (0.7222, 0.2777), respectively. In addition, the luminescence mechanism has been analyzed using a Tanabe–Sugano energy level diagram. Finally, by using a 365 nm near-ultraviolet InGaN chip combined with BLMN:0.4% Mn4+ phosphors, a far-red LED device was fabricated. Mn4+-activated BaLaMgNbO6 far-red emitting double-perovskite phosphors with internal quantum efficiency up to 52% were developed for potential application in plant growth LEDs.![]()
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Affiliation(s)
- Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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25
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Sun L, Liang J, Devakumar B, Sun Q, Wang S, Li B, Huang X. Preparation, characterization, and luminescence properties of double perovskite SrLaMgSbO6:Mn4+ far-red emitting phosphors for indoor plant growth lighting. RSC Adv 2018; 8:35187-35194. [PMID: 35547070 PMCID: PMC9087209 DOI: 10.1039/c8ra06983b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 10/08/2018] [Indexed: 12/04/2022] Open
Abstract
Mn4+-activated SrLaMgSbO6 far-red emitting phosphors with double perovskite structure were prepared by traditional solid-state reaction. The research on the crystal structure of the SrLaMgSbO6:0.8%Mn4+ (SLMS:0.8%Mn4+) phosphors showed that the as-prepared sample was made up of two polyhedrons, [SbO6] and [MgO6]. Under the excitation of 333 nm, the SLMS:0.8%Mn4+ phosphors exhibited an intense far-red emission in the 625–800 nm wavelength range with CIE chromaticity coordinates of (0.733, 0.268), which could match well with the absorption spectrum of phytochrome PFR. The optimal concentration of Mn4+ ions in the SLMS:Mn4+ phosphors was 0.8 mol%. Importantly, the as-prepared SLMS:0.8%Mn4+ phosphors had an internal quantum efficiency of 35%. The thermal stability of SLMS:0.8%Mn4+ phosphors was also investigated, and the activation energy was found to be 0.3 eV. Thus, the Mn4+-activated SLMS phosphors have great potential to serve as far-red emitting phosphors in indoor plant growth lighting. Novel far-red emitting double perovskite SrLaMgSbO6:Mn4+ phosphors were prepared and their photoluminescence properties were studied for applications in indoor plant growth lighting.![]()
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Affiliation(s)
- Liangling Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Jia Liang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Balaji Devakumar
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Qi Sun
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Shaoying Wang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Bin Li
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
| | - Xiaoyong Huang
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
- P. R. China
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26
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Zhong J, Zhou S, Chen D, Li J, Zhu Y, Li X, Chen L, Ji Z. Enhanced luminescence of a Ba2GdSbO6:Mn4+ red phosphor via cation doping for warm white light-emitting diodes. Dalton Trans 2018; 47:8248-8256. [DOI: 10.1039/c8dt01575a] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel non-rare-earth-doped perovskite Ba2GdSbO6:Mn4+ red-emitting phosphor and the related enhancement mechanisms of charge compensation and ionic substitution are reported.
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Affiliation(s)
- Jiasong Zhong
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Su Zhou
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Daqin Chen
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
- College of Physics and Energy
| | - Junjie Li
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Yiwen Zhu
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Xinyue Li
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Leifeng Chen
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
| | - Zhenguo Ji
- College of Materials and Environmental Engineering
- Hangzhou Dianzi University
- Hangzhou 310018
- China
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27
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Liang J, Sun L, Devakumar B, Wang S, Sun Q, Guo H, Li B, Huang X. Novel Mn4+-activated LiLaMgWO6 far-red emitting phosphors: high photoluminescence efficiency, good thermal stability, and potential applications in plant cultivation LEDs. RSC Adv 2018; 8:27144-27151. [PMID: 35539995 PMCID: PMC9083278 DOI: 10.1039/c8ra05669b] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 07/16/2018] [Indexed: 01/12/2023] Open
Abstract
Double perovskite-based LiLaMgWO6:Mn4+ (LLMW:Mn4+) red phosphors were synthesized by traditional solid-state route under high temperature, and they showed bright far-red emission under excitation of 344 nm. The crystal structure, luminescence performance, internal quantum efficiency, fluorescence decay lifetimes, and thermal stability were investigated in detail. All samples exhibited far-red emissions around 713 nm due to the 2Eg → 4A2g transition of Mn4+ under excitation of near-ultraviolet and blue light, and the optimal doping concentration of Mn4+ was about 0.7 mol%. The CIE chromaticity coordinates of the LLMW:0.7% Mn4+ sample were (0.7253, 0.2746), and they were located at the border of the chromaticity diagram, indicating that the phosphors had high color purity. Furthermore, the internal quantum efficiency of LLMW:0.7% Mn4+ phosphors reached up to 69.1%, which was relatively higher than those of the reported Mn4+-doped red phosphors. Moreover, the sample displayed good thermal stability; the emission intensity of LLMW:0.7% Mn4+ phosphors at 423 K was 49% of the initial value at 303 K, while the activation energy was 0.39 eV. Importantly, there was a broad spectral overlap between the emission band of LLMW:Mn4+ phosphors and the absorption band of phytochrome PFR under near-ultraviolet light. All of these properties and phenomena illustrate that the LLMW:Mn4+ phosphors are potential far-red phosphors for applications in plant cultivation LEDs. Novel Mn4+-activated LiLaMgWO6 far-red emitting double-perovskite phosphors with high photoluminescence efficiency and good thermal stability were developed for applications in plant cultivation LEDs.![]()
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Affiliation(s)
- Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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Liang J, Sun L, Devakumar B, Wang S, Sun Q, Guo H, Li B, Huang X. Far-red-emitting double-perovskite CaLaMgSbO6:Mn4+ phosphors with high photoluminescence efficiency and thermal stability for indoor plant cultivation LEDs. RSC Adv 2018; 8:31666-31672. [PMID: 35548243 PMCID: PMC9085751 DOI: 10.1039/c8ra06708b] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 09/05/2018] [Indexed: 11/30/2022] Open
Abstract
A series of Mn4+-activated CaLaMgSbO6 far-red-emitting phosphors were synthesized by a solid-state reaction route and the microstructure and optical characterizations were investigated in detail. Upon excitation at 370 and 469 nm, the samples showed intense far-red emission at about 708 nm originating from the 2Eg → 4A2g transition and the optimal Mn4+ concentration was 0.7 mol%. The as-prepared phosphors also exhibited excellent internal quantum efficiency (88%) and high thermal stability. The emission intensity at room temperature dropped to 54% when the temperature rose to 423 K and the activation energy was 0.34 eV. The outstanding optical properties and the fact that the emission band of the obtained phosphors had a broad overlap with the absorption band of phytochrome PFR demonstrated that the CaLaMgSbO6:Mn4+ phosphors may be promising potential spectral converters for applying to indoor plant cultivation light-emitting diodes. Far-red-emitting double-perovskite CaLaMgSbO6:Mn4+ phosphors with high quantum efficiency and thermal stability were developed for potential applications in indoor plant cultivation LEDs.![]()
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Affiliation(s)
- Jia Liang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Liangling Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Balaji Devakumar
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Shaoying Wang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Qi Sun
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Heng Guo
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Bin Li
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
| | - Xiaoyong Huang
- Key Lab of Advanced Transducers and Intelligent Control System
- Ministry of Education and Shanxi Province
- College of Physics and Optoelectronics
- Taiyuan University of Technology
- Taiyuan 030024
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