JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 11
·14128-14136
·
IF 2.478
Song Fengmin,Zhang Gongguo
A series of double-perovskite orange–red-emitting Ca (3−2 x ) Sm x Na x TeO 6 ( x = 0.01–0.25) phosphors have been synthesized via high-temperature method. The single-phase and orthorhombic structure of Ca 3 TeO 6 :Sm 3+ , Na + phosphors was confirmed by X-ray powder diffraction. Under 405 nm excitation, Ca 3 TeO 6 :Sm 3+ , Na + phosphors emitted a series of orange–red emission due to the transition of Sm 3+ from 4 G 5/2 to 6 H J/2 ( J = 5, 7, 9, and 11). The optimal Sm 3+ -doping concentration of Ca (3−2 x ) Sm x Na x TeO 6 ( x = 0.01–0.25) was x = 0.10. The thermal-quenching temperature of Ca 3 TeO 6 :0.10Sm 3+ , 0.10Na + phosphor was above 480 K. A white light-emitting diode (w-LED) based on 410 nm UV chip was successfully fabricated, and it presented a good correlated color temperature and a high color-rendering index (R a ). Therefore, orange–red-emitting Ca 3 TeO 6 :Sm 3+ , Na + phosphors have potential applications in UV-based w-LEDs.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Renping Cao,Xinyan Lv,Yuming Jiao,Yaqin Ran,Siling Guo,Hui Ao,Ting Chen,Ting Fan
Ca 3 La 6 Si 6 O 24 :Eu 3+ phosphors are synthesized in air through high-temperature solid-state reaction method. The crystal structure, morphology, and luminescence properties are investigated. Ca 3 La 6 Si 6 O 24 :Eu 3+ phosphor emits orange-red light in the range of 570–750 nm due to the 5 D 0 → 7 F S ( S = 0, 1, 2, 3, and 4) transitions of Eu 3+ ion. The optimal Eu 3+ doping concentration is ∼8 mol%. The energy transfer mechanism is the electric multipolar interactions. The luminescence lifetimes are ∼1.70, 1.66, 1.62, 1.57, 1.51, and 1.49 ms for x = 2, 4, 6, 8, 10, and 12 mol%, respectively. Ca 3 La 6 Si 6 O 24 :Eu 3+ phosphor shows excellent thermal stability with the E a value ∼0.3314 eV. The luminous and temperature quenching mechanisms are explained by the energy level diagram and configurational coordinate diagram of Eu 3+ ions, respectively. The experimental results indicate that Ca 3 La 6 Si 6 O 24 :Eu 3+ phosphor has a potential application in white light-emitting diodes (LEDs) based on the near UV (394 nm) LED chip.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Jiang Guo,Junlan Guo,Jing Gao,Jiexin Chen,Ya Yang,Yue Yang,Lingling Zheng,Yanyan Li,Lei Zhao,Bin Deng,Ruijin Yu
Novel orange-red-emitting LaNb 2 VO 9 (LNV): x Sm 3+ ( x = 0–35 mol%) phosphors were successfully synthesized through the traditional high-temperature solid-state reaction method. The crystal structure, SEM images, particle size distribution , XRD spectra, optimal concentration, zero-thermal-quenching behaviors, and luminescent stability of the samples were exhaustively studied. In particular, the phosphors presented broadband excitation that consisted of O 2− →V 5+ and O 2− →Sm 3+ charge transfer bands (CTB). Under 308 nm excitation, LNV:5 mol%Sm 3+ phosphor emitted orange-red light with high intensity at the wavelength of 598 nm due to the 4 G 5/2 → 6 H 7/2 transition of Sm 3+ ions. The sample with the optimal doping concentration of 5 mol% exhibited zero-thermal-quenching. Furthermore, a white light-emitting diode (WLED) with the Commission Internationale de L'Eclairage (CIE) coordinate of (0.347, 0.348) and the superior color rendering index (CRI, R a ) of 90 was smoothly fabricated. With the LNV: 5 mol%Sm 3+ phosphor, the level 1–3 structure of latent fingerprints (LFPs) and the detailed features of lip prints were clearly detected under ultraviolet irradiation. Ultimately, the phosphor effectively detected LFPs in various daily life circumstances. Consequently, the zero-thermal-quenching orange-red LNV:Sm 3+ phosphors have several promising applications in WLEDs and personal identification.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2023
·
IF 3.5
Mingjun Zhao,Yiting Tao,Panting Wang,Ting Wu,Danping Chen,Wei Chen
This study discovered that a transparent BaF 2 -B 2 O 3 glass system without rare-earth ions prepared under CO-reducing atmosphere exhibited orange-red self-luminescence under near-UV light, generating broadband luminescence from 550∼850 nm centered at 650 nm under broadband light excitation at about 397 nm. Based on the results of spectra, electron spin resonance, Raman, and X-ray photoelectron spectroscopy, it is proposed that the luminescence phenomenon is due to the s→p transition of B 2+ generated inside the glass under the reducing atmosphere. This new luminescent glass has the potential to be an orange-red luminescent material excited by a light-emitting diode.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2022
·Vol. 16
·期 6
·2100722
·
IF 10.947
Taoli Deng,Linhui Huang,Shuxing Li,Qiangqiang Zhu,Le Wang,Takashi Takeda,Naoto Hirosaki,Rong-Jun Xie
Laser-driven solid-state lighting with super-brightness and compactness is recognized as a promising alternative to white light-emitting diodes. However, it is quite difficult to achieve laser-driven warm white light with long-term stability due to the shortage of robust orange- or red-emitting laser phosphors. In this work, an efficient and thermally robust orange-red (La,Y) 3 Si 6 N 11 :Ce 3+ (LYSN)-BN phosphor-in-glass (PiG) film is proposed to realize warm white light, where h -BN acts as an optical medium to enhance light scattering, a heat sink to reduce the temperature, and a protective layer to prevent LYSN from oxidation. The “LYSN+15 wt.% BN” PiG film shows an internal quantum efficiency of 70% and a luminance saturation threshold of 12.82 W mm −2 , much higher than those without h -BN (i.e., 57.5% and 7.63 W mm −2 ). A warm white light lamp fabricated by combining “LYSN+15 wt.% BN” PiG film with blue laser diodes, showing tunable correlated color temperatures (2800–5000 K), has a maximal luminous flux of 740 lm and a luminous efficacy of 133.5 lm W −1 , which promises high collimation and penetration lighting in the rainy or foggy weather. By designing a composite orange-red-emitting phosphor converter, this work lays a foundation for realizing high quality laser-driven warm white lighting source.
研究领域:
光学材料
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固态照明
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材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Shuang Shu,Yu Wang,Yuee Ke,Bin Deng,Rixin Liu,Qinyang Song,Jianxu Wang,Ruijin Yu
Novel orange-red-emitting tantalate NaCaTiTaO 6 (NCTT): x Sm 3+ ( x = 0.005–0.25) phosphors are synthesized via a solid-state reaction technique at 1300 °C. The phosphors exhibit an orthorhombic perovskite structure with a space group of Pnma (No. 62). At 407 nm excitation, the phosphors show the strongest emission peak at 647 nm belonging to the 4 G 5/2 → 6 H 9/2 transition. The optimal Sm 3+ concentration is 0.05 mol, and concentration quenching is caused by dipole–dipole interaction. The NCTT:0.05Sm 3+ phosphor exhibit a broad bandgap of 3.44 eV and a high color purity of 99.9%. At 420 K, the decrease in intensity is only 10% of the initial value at 300 K for NCTT:0.05Sm 3+ phosphor but 15% for Y 3 Al 5 O 12 :Ce 3+ phosphor. Consequently, the fabricated white light-emitting diodes exhibit a high rendering index value of 89, a good correlated color temperature of 5257 K, and CIE coordinates of (0.339, 0.364). Hence, the Sm 3+ -doped orange-red-emitting NCTT phosphors have potential applications for w-LEDs.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Jianxu Wang,Yan Xie,Junlan Guo,Xuemei Yao,Xue Geng,Jing Gao,Xuyao Feng,Zijing Zhou,Yuanyuan Liu,Bin Deng,Ruijin Yu
Novel apatite-type NaCa 3 Bi(PO 4 ) 3 F: x Sm 3+ (0.01 ≤ x ≤ 0.30) orange-red-light phosphors were synthesized through the solid-state method at high temperature. The crystal structure, energy band structure , density of state, phase purity, particle morphology , photoluminescence properties, thermostability, and luminescence decay of the phosphors were comprehensively characterized. When λ ex = 404 nm, the optimal NaCa 3 Bi(PO 4 ) 3 F:0.05 S m 3+ phosphor showed the orange-red emission (597 nm). The NaCa 3 Bi(PO 4 ) 3 F:Sm 3+ phosphors exhibited abnormal thermal quenching properties as their emission intensity increased by about 2.57% from 300 to 380 K. Their intensity at 440 K was still 1.01-fold stronger than that at room temperature. The abnormal thermal quenching mechanisms were well explained via the coordinate configuration scheme. The thermal activation energy ( E a ) was calculated to be 0.79 eV. The color purity of all the phosphors reached 99.9%. Ultimately, a white light-emitting diode (w-LED) was fabricated based on the tri-color RGB method. The color rendering index and the chromaticity coordinates of the fabricated w-LED were 89 and (0.310, 0.319), respectively. Thus, these high thermostability NaCa 3 Bi(PO 4 ) 3 F:Sm 3+ orange-red phosphors can be potentially used in w-LED applications.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Hongyang Du,Ge Zhu,Zhuowei Li,Shanshan Li,Ming He,Zhenhua Bi,Shuangyu Xin
In this work, we reported the synthesis and characteristic luminescence of an orange-red emitting phosphor NaBa 10 Y 5 W 4 O 30 : Eu 3+ for ultra-violet white light emitting diodes. The phase compound, crystalline structure and morphology are analyzed. The results indicate that a heavy doping of Eu 3+ ( x = 50%) is realized in NaBa 10 Y 5-5 x W 4 O 30 : x Eu 3+ without any impurity phase. Moreover, the optical band gap is analyzed by diffuse reflectance spectroscopy and further confirmed by density function theory (DFT). Meanwhile, the as-synthesized NaBa 10 Y 5 W 4 O 30 : Eu 3+ phosphor can be efficiently pumped by strong broad-band excitation around 315 nm due to the charge transfer transition from [WO 6 ] 6- groups to Eu 3+ . Owing to the highly symmetric lattice environment of Eu 3+ in YO 6 sites, a strong orange-red emission at 596 nm with color purity of 95.34% is obtained, corresponding to the 5 D 0 → 7 F 1 magnetic dipole transition of Eu 3+ ions. The critical concentration is obtained to be x = 15%, and the quenching mechanism is discussed to be dipole–dipole interaction. Furthermore, the temperature dependent emission behavior are analyzed, and the thermal quenching mechanism are explained by the variable temperature decay curve and configuration coordination diagram. Finally, an orange-red light emitting diode lamp is fabricated based on NaBa 10 Y 5 W 4 O 30 : 15%Eu 3+ phosphor and 315 nm semiconductor chip. In summary, the results indicate that NaBa 10 Y 5 W 4 O 30 : Eu 3+ phosphor has the potential to be an orange-red phosphor for white light emitting diodes.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Jiakang Hu,Qiaohui Ruan,Yanyu Cui,Siyuan Ye,Zhuohan Lin,Xue Zhang,Yan Li
CsPbI3 nanoplatelets (NPLs) are considered potential candidates for orange-red light-emitting materials due to their high exciton binding energy and narrow full width at half maximum (FWHM). However, the relatively low formation energy of CsPbI3 NPLs leads to rapid growth rates, posing a challenge for the controlled synthesis of high-quality CsPbI3 NPLs. Herein, we report the synthesis of high-quality CsPbI3 NPLs emitting orange-red light using a one-pot method under mild reaction conditions. The protonation of oleylamine (OAm) by introducing HI and the strong interaction between the octadecylphosphonic acid (ODPA) ligand and Pb2+ facilitate the anisotropic growth of CsPbI3 NPLs and enable precise control over the numbers of NPL layers, achieving the desired orange-red light emission. The resulting CsPbI3 NPLs exhibited a high photoluminescence quantum yield (PLQY) of up to 90%, a narrow FWHM of only 25 nm, and excellent stability at room temperature, under ultraviolet–visible light and in aqueous environments. The comprehensive study of the formation process of CsPbI3 NPLs enriches our understanding of the growth mechanism and provides a synthetic route for producing high-quality CsPbI3 NPLs.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2023
·
IF 4.9
Xiaopeng Hu,Anlin Zhang,Yufeng Du,Li Zhou,Changlin Li,Jingjing Lian,Zhequan Zou,Xuan Ouyang,Bin Deng,Lianwu Xie,Ruijin Yu
A novel layered perovskite tantalate phosphor Sr 3 LaTa 3 O 12 :Sm 3+ (SLTO:Sm 3+ ) with orange-red emission was obtained for the first time via the solid-phase synthetic method. The phase purity, surface morphology , element distribution and luminescent properties of the SLTO: x Sm 3+ ( x = 0.01 mol%–0.30 mol%) phosphors were investigated. Under 408 nm excitation, the optimum doped SLTO:0.10Sm 3+ phosphor emits orange-red light at 598 nm with the highest emission peak ( 4 G 5/2 → 6 H 7/2 ). The critical energy transfer distance is 1.687 nm. The prepared SLTO:0.10Sm 3+ phosphor has excellent thermal stability with temperature quenching temperature ( T 0.5 > 500 K) and high activation energy ( E a = 0.25 eV). Through calculation, the chromaticity coordinates of all samples are concentrated in the orange-red area, and the color purity reaches 99%. The fabricated white light-emitting diode (w-LED) has a good correlated color temperature (5132 K), a high R a (89), and the CIE chromaticity coordinates (0.340, 0.327). Consequently, the superiority of orange-red-emitting tantalate SLTO:Sm 3+ phosphors for w-LEDs is demonstrated.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yixi Lu,Bin Cao,Bin Li,Tingting Zhang,Hai Wu,Chaoyong Deng,Weichao Huang
To fulfill bifunctional applications of the optical thermometry and fingerprint detection, Sm 3+ -doped La 3 SnGa 5 O 14 phosphors were synthesized. Under 403 nm excitation, the phosphor showed strong orange-red emission with the peaks at 562, 599, 644, and 707 nm, originating from the 4 G 5/2 → 6 H n/2 (n = 5, 7, 9, and 11) transition of Sm 3+ . Interestingly, La 3 SnGa 5 O 14 : Sm 3+ had excellent thermal stability of the PL peak at 599 nm and anti-thermal quenching property of the PL peak at 562 nm. Leveraging this unique behavior, an optical thermometer based on the fluorescence intensity ratio (FIR) was designed and had a maximum relative sensitivity (S r ) of 0.2348 % K −1 at 423 K. Furthermore, the fluorescent latent fingerprints images prepared with La 3 SnGa 5 O 14 : Sm 3+ phosphor were well visualized, and the level 1–3 features could be identified under ultraviolet irradiation. These findings suggest that the La 3 SnGa 5 O 14 : Sm 3+ phosphor has potential applications in optical thermometry and fingerprint detection.
研究领域:
材料科学
·
光学物理
·
分析化学
·
法庭科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Rui-Qi Su,Qiang-Qiang Zhu,Hang Mei,Shuangqiang Fang,Yue Zhai,Pei Liang,Hong Zhang,Le Wang
Nitride red-emitting materials exhibit severe luminance saturation and are thus not suitable for achieving enhanced color rendering in laser lighting applications. The silicate luminescent material (Sr,Ba) 3 SiO 5 :Eu 2+ displays excellent stability and can emit orange-red light when excited by blue laser light, making it a promising candidate for realizing high-performance laser lighting. In this study, (Sr,Ba) 3 SiO 5 :Eu 2+ phosphor-in-glass (PiG) films were prepared on a sapphire substrate, and the influences of preparation temperature, mass ratio of phosphor to glass frit (PtG ratio), and film thickness on the application performance of PiG film were analyzed. The (Sr,Ba) 3 SiO 5 :Eu 2+ PiG film with a PtG ratio of 1:1 and a film thickness of ∼50 μm prepared at 475 °C exhibited optimal comprehensive luminescence performance. This film exhibited a luminous saturation threshold of 5.98 W/mm 2 , a maximum luminous flux of 372.3 lm, and a luminous efficiency of 62.3 lm/W at the luminous saturation threshold. The maximum luminous flux of the (Sr,Ba) 3 SiO 5 :Eu 2+ PiG film was 77.6% higher than that of the CaAlSiN 3 :Eu 2+ nitride PiG film. Finally, through the incorporation of green-emitting YAGG:Ce 3+ phosphor into the (Sr,Ba) 3 SiO 5 :Eu 2+ PiG film, laser-driven white light with a luminous flux of 531.7 lm and a high color rendering index (CRI) of 83.4 was realized.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）