CERAMICS INTERNATIONAL
·
2018
·Vol. 45
·期 1
·588-594
·
IF 3.057
Chunlin Ma,Xingyu Wang,Zhixing Gan,Weishi Tan,Xiaoxiong Wang,Jia Zhang,Weiping Zhou
A series of orange-red emitting Sm 3+ activated Ba 0.85 Ca 0.15 Ti 0.90 Zr 0.10 O 3 (BCZT: x Sm 3+ , x = 0.001–0.007) are synthesized by a conventional solid-state reaction method. The Sm 3+ ions composition dependent photoluminescence properties are systematically investigated. Under the excitation of a 407 nm near-ultraviolet light, the ceramics exhibit strong characteristic emission of Sm 3+ ions with dominant orange-red emission peak at around 595 nm, which is ascribed to the transition of 4 G 5/2 → 6 H 7/2 . The BCZT: 0.004Sm 3+ ceramic displays the optimal emission among these Sm 3+ -doped BCZT solid solutions . Moreover, the photoluminescence intensity exhibits extremely sensitive to temperature, suggesting that BCZT: 0.004Sm 3+ could be applicable for temperature sensing. A maximum relative sensitivity of 1.89% K −1 at 453 K is obtained. Furthermore, the existence of ferroelectricity in the BCZT host combined with Sm 3+ activated photoluminescence properties could be useful for developing optical-electro multifunctional materials and devices.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Renping Cao,Xuantian Wang,Xun Ouyang,Yuming Jiao,Yajie Li,Huijun Wan,Wensheng Li,Zhiyang Luo
A series of powder phosphors with the composition of Ba 2-x Sm x SiO 4 are successfully synthesized by the solid-state reaction method in air. The X-ray powder diffraction patterns , energy disperse spectroscopy spectrum, elemental mapping images, decay curves, and luminescence properties are investigated. The excitation spectrum of Ba 2 SiO 4 :Sm 3+ phosphor monitored at 598 nm is observed in the region from 200 to 525 nm with some distinct excitation peaks. The emission spectral bands of Ba 2 SiO 4 :Sm 3+ phosphor with excitation at 402 nm are shown in the range of 425–750 nm due to the 4 G 5/2 → 6 H 5/2 , 4 G 5/2 → 6 H 7/2 , 4 G 5/2 → 6 H 9/2 , and 4 G 5/2 → 6 H 11/2 transitions of Sm 3+ ions, respectively. The optimal Sm 3+ ion doping concentration is ~10 mol% in Ba 2 SiO 4 :xSm 3+ phosphor. The concentration quenching mechanism is the electric multipole interaction. Ba 2 SiO 4 :Sm 3+ phosphor has a good thermal stability and the thermal activation energy ( E a ) value is ~0.2707 eV.
研究领域:
材料科学
·
发光材料
·
固态化学
·
固体光学性质
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高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 24
·e202500249
·
IF 3.7
Baoqing Sun,Ting Li,Congliang Shen,Mingyue Zhang,Zhaoyu Guang
Graphical Tb 3+ , Sm 3+ mono-/co- doped LiTaO 3 phosphors are prepared by high-temperature solid-state reaction. Emission color of LiTaO 3 : Tb 3+ , Sm 3+ shifts from green to yellow as Sm 3 ⁺ concentration increases due to energy transfer from Tb 3+ to Sm 3+ . Time-resolved color evolution from green to orange is achieved by combining the trap-assisted afterglow of Tb 3+ and stable photoluminescence of Sm 3+ . Currently, static fluorescent anti-counterfeiting technology struggles to cope with the increasingly sophisticated counterfeiting techniques, making the dynamic multimode regulation scheme an urgent necessity. Herein, Tb 3+ , Sm 3+ mono-/co-doped LiTaO 3 (LTO) phosphors are prepared by high-temperature solid-state method. Under 254 nm excitation, the emission chromaticity of LTO: Tb 3+ , Sm 3+ is modulated from green to yellow by increasing Sm 3+ content due to Tb 3+ → Sm 3+ energy transfer. The diverging luminescence thermal stability of LTO: Tb 3+ and LTO: Sm 3+ is uncovered, which is governed by their distinct vacuum-referenced binding energy (VRBE) levels and charge compensation mechanisms. Based on the time-domain difference between the trap-assisted afterglow of Tb 3+ and the photoluminescence of Sm 3+ , a dynamic anti-counterfeiting pattern that changes from green to orange over time is designed. This work provides a novel material design strategy for time-resolved color signatures and multi-modal dynamic optical encryption.
研究领域:
材料科学
·
光学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF RARE EARTHS
·
2020
·
IF 3.104
Reziwanguli Yantake,Aierken Sidike,Taximaiti Yusufu
This study presents the photoluminescence characteristic analysis of a series of red phosphors of KAlSiO 4 :1.5 mol%Sm 3+ , x mol%Eu 3+ ( x = 2, 3, 4, 5, 6, 7) prepared via high-temperature solid-phase reaction. The results show that the X-ray diffraction (XRD) refinement results are reliable. The unit cell parameters and volume gradually decrease as the Eu 3+ concentration increases, resulting in a grain size reduction of 10.22%. When x = 6, the emission peaks of Sm 3+ at 564, 601, and 651 nm disappear completely, and the corresponding full width at half maximum becomes 0. At 610 nm, the emission peak intensity of Eu 3+ is increased by a factor of 4.8. The resonant non-radiative energy transfer effect is greater than the co-excitation effect. A maximum energy transfer efficiency of 97.8% is achieved. The integral area at 610 nm is as high as 85%. The color purity of the phosphor is as high as 92.97%, and the internal quantum yield gradually changes from 32% to 51%. Ultimately, these results confirm that the silicate phosphor is suitable for the red component in the three primary color phosphors of white light-emitting diodes.
研究领域:
材料科学
·
光学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Yingying Chen,Zhennan Wu,Xiaojuan Liang,Ding Nan,Wen Xu,Weidong Xiang
Inorganic perovskite nanocrystals exhibit tremendous prospects in optoelectronics . Although the stability of perovskite nanocrystals is considerably improved after being embedded in a glass matrix, subtle difference in the glass composition is still an important factor affecting the glass matrix and perovskite precipitation behavior. In this study, a series of CsPbCl 2 Br 1 nanocrystal glasses with excellent optical properties were prepared by optimizing the composition. Further, we introduced Sm 3+ into CsPbCl 2 Br 1 perovskite nanocrystal glass (PNG) to enhance photoluminescence (PL) emissions and improve the ultraviolet response and device stability of silicon photodetectors (Si PDs). After integrating the as-prepared Sm 3+ -doped CsPbCl 2 Br 1 PNG with Si PDs, the UV response of the Si PDs at 200–400 nm was significantly enhanced. In particular, the responsivity of Sm 3+ -doped CsPbCl 2 Br 1 PNG-coated Si PDs at 320 nm reaches 7.5 times that of bare Si PDs. Furthermore, Sm 3+ -doped CsPbCl 2 Br 1 PNG-coated Si PDs displayed good photocurrent stability, with a decrease of only 1.5% after 60 days of operation. Additionally, after integrating 10% Sm 3+ -doped CsPbCl 2 Br 1 PNG with InGaAs PDs, a broadband response in the ultraviolet to the infrared region is successfully achieved. This study attempts to fabricate perovskite nanocrystal glasses and provides a new perspective for next-generation high-performance UV PDs.
研究领域:
材料科学
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光学工程
·
电子器件
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产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2025
·
IF 3.1
Liu Lu,Zhang Anlin,Sun Huapeng,Lei Yanhua,Deng Bin
To address the insufficient color performance in contemporary solid-state lighting, a novel series of orange-red-emitting KSr 6 ScSi 4 O 16 :Sm 3+ (KSSSO: Sm 3+ ) phosphors was synthesized employing conventional solid-state synthesis. Comprehensive characterization encompassing phase analysis, luminescence properties, and thermal behavior was performed on the temperature-optimized material. Under 402 nm excitation, the Sm 3+ -activated phosphors exhibit four distinct emission bands centered at 562 nm, 599 nm, 645 nm, and 708 nm, corresponding to the characteristic 4 G 5/2 → 6 H 5/2 , 4 G 5/2 → 6 H 7/2 , 4 G 5/2 → 6 H 9/2 , and 4 G 5/2 → 6 H 11/2 transitions of Sm 3+ ions, respectively. Notably, the 599 nm emission ( 4 G 5/2 → 6 H 7/2 transition) dominates the luminescence spectrum, resulting in an orange-red emission color for the phosphor. The ideal Sm 3+ concentration was determined to be 2 mol%, exceeding this level induces concentration quenching primarily via dipole-dipole interactions. All synthesized samples demonstrate exceptional color purity exceeding 98%. The phosphor exhibits the remarkable property of very low thermal quenching, demonstrating exceptional thermal stability with a retention intensity of 99.58% even at an elevated temperature of 420 K. A phosphor-converted white light-emitting diode (pc-WLED) was fabricated via a tri-color blending approach, demonstrating an ideal correlated color temperature (CCT) of 5638 K and an excellent color rendering index ( R a = 92.8). These outstanding photometric properties confirm the exceptional suitability of the phosphor for high-performance WLEDs.
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2020
·Vol. 10
·期 7
·1249
·
IF 4.324
Jun Xiao,Cong Wang,Xin Min,Xiaowen Wu,Yangai Liu,Zhaohui Huang,Minghao Fang
Advances in solid-state white-light-emitting diodes (WLEDs) necessitate the urgent development of highly efficient single-phase phosphors with tunable photoluminescence properties. Herein, the Tm3+, Dy3+, and Sm3+ions are incorporated into the orthorhombic NaGdTiO4(NGT) phosphors, resulting in phosphors that fulfill the aforementioned requirement. The emission spectrum of Tm3+ions overlaps well with the adsorption spectra of both Dy3+and Sm3+ions. Under the excitation at 358 nm, the single-phase NaGdTiO4: Tm3+, Dy3+, Sm3+phosphor exhibits tunable emission peaks in the blue, yellow, and red regions simultaneously, resulting in an intense white-light emission. The coexisting energy transfer behaviors from Tm3+to Dy3+and Sm3+ions and the energy transfer from Dy3+to Sm3+ions are demonstrated to be responsible for this phenomenon. The phosphors with multiple energy transfers enable the development of single-phase white-light-emitting phosphors for phosphor-converted WLEDs.
研究领域:
材料科学
·
光学
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高影响因子
Crystals
·
2023
·Vol. 13
·期 8
·1273
·
IF 2.7
Huiting Zhang,Zhonghua Zhu,Shengdi Ta,Ninghan Zeng,Limin Wu,Wenxia Wu,Peng Zhang,Shoulei Xu,Bernard Albert Goodman,Wen Deng
High-quality single crystals with empirical composition Y2.96Sm0.04Ga5O12(YGG: Sm3+) were successfully prepared by the optical floating zone method for the first time and compared with related single crystals of Y2.96Sm0.04Al5O12(YAG: Sm3+). With both crystals, XRD showed that Sm3+entered the cubic-phase structure. Optical absorption spectra produced a series of peaks from Sm3+in the 250 nm to 550 nm range, and photoluminescence excitation (PLE) spectra detected at 613 nm showed strong excitation peaks at 407 nm and 468 nm. A strong emission peak at 611 nm (orange-red light) was observed in the photoluminescence (PL) spectra under excitations at both 407 and 468 nm, respectively, but it was much brighter under excitation at 407 nm. Furthermore, with both emission spectra, the peaks from the YGG: Sm3+crystal were significantly more intense than those from the YAG: Sm3+crystal, and both experienced a blue shift. In addition, under excitation at 407 nm, the color purity of the emitted orange-red light of YGG: Sm3+was higher than that of the YAG: Sm3+crystal, and the fluorescence lifetime for the4G5/2→6H7/2transition of YGG: Sm3+was longer than that of the YAG: Sm3+crystal. The optical properties of the YGG: Sm3+crystal are better than those of the YAG: Sm3+crystal.
研究领域:
材料科学
·
光学材料
·
无机化学
·
固体物理
·
发光材料
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高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 12
·898
·
IF 2.5
Shen Kuo,Zhang Ruiting,Jin Yahong,Li Yanmei,Hu Yihua
Semiconductor oxides are widely used in the field of optical materials due to their broad spectral response, tunable structure, low cost, high chemical and thermal stability, among other advantages. The design and fabrication of photochromic materials in semiconductor oxides have shown tremendous potential in various fields such as optoelectronic displays, optical storage, and light-stimulated responses. In this work, we have designed and fabricated a novel inorganic photochromic material by doping Sm 3+ ions into the semiconductor oxide CaBiNb 2 O 9 (CBN). The introduction of Sm 3+ ions induces the formation of oxygen vacancies and cationic vacancies in CBN, greatly enhancing the photochromic effect of the matrix. CaBiNb 2 O 9 : Sm 3+ (CBN: Sm) can achieve reversible photochromic response through 254 nm light irradiation and 350 ℃ thermal stimulation, and exhibit excellent stability and fatigue resistance. The photochromic process and performance of the CBN: Sm materials were characterized, and the potential mechanisms were analyzed and discussed. The conducted research and insights will provide support for other researchers in the design and fabrication of photochromic materials based on semiconductor oxides.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2023
·
IF 3.6
Zhexi Lin,Chuandong Zuo,Jiayu Zheng,Feiyang Chen,Chaoyang Ma,Chen Chang,Jingqi Wan,Xuanyi Yuan,Wei Tang,Zicheng Wen,Yongge Cao
Inorganic ferroelectrics and robust oxide ceramic materials exhibiting high-contrast photochromic properties and reversible luminescence modulation play a significant role in multifunctional optoelectronic applications such as anti-counterfeiting, optical storage, and high-sensitivity optical switches applications. In this study, Ba 3 MgSi 2 O 8 : xSm 3+ (x = 0, 0.25%, 0.5%, 0.75%, 1% and 2%) (abbreviated as BMS: xSm 3+ ) are obtained by high temperature sintering in a reducing atmosphere. The prepared BMS: 0.25%Sm 3+ not only shows a high color contrast of 70.8% which is rarely reported in inorganic photochromic materials, but also exhibits a large luminescence modulation degree up to 80.0% which can be restored to the original state under heat treatment. Based on these advantages of BMS: 0.25%Sm 3+ , the applications in optical storage including the process of data writing/erasing are systematically depicted. The insights provided in this study will render an effective method, fostering the development of other inorganic photochromic materials.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 21
·19569-19577
·
IF 2.195
Cao Renping,Xu Longxiang,Lv Xinyan,Wang Xuantian,Chen Ting,Liu Pan,Fan Ting
Novel Ca 8 La 2 (PO 4 ) 6 O 2 :Sm 3+ phosphors are successfully synthesized in air by the high temperature solid state reaction method. The X-ray diffraction patterns, morphology, energy spectrum diagram, elemental mapping, luminescence properties, concentration-dependent emission spectra, thermal stability, and decay curves are investigated. The excitation spectrum of Ca 8 La 2 (PO 4 ) 6 O 2 :8%Sm 3+ phosphor monitored at 604 nm extends the region from 220 nm to 520 nm with many excitation spectral bands because of the O 2− –Sm 3+ charge transfer band and the f – f transitions of Sm 3+ ion. Ca 8 La 2 (PO 4 ) 6 O 2 :Sm 3+ phosphor with excitation at 402 nm emits red orange light in the range of 550–770 nm with many emission spectral bands derived from the 4 G 5/2 → 6 H 5/2 (550–570 nm), 4 G 5/2 → 6 H 7/2 (570–630 nm), 4 G 5/2 → 6 H 9/2 (630–690 nm), and 4 G 5/2 → 6 H 11/2 (690–760 nm) transitions of Sm 3+ ion, and the optimal Sm 3+ concentration is ~ 8 mol%. The lifetime of Ca 8 La 2 (PO 4 ) 6 O 2 :Sm 3+ phosphor decreases from 1.39 to 1.11 ms with increasing Sm 3+ concentration from 2 to 12 mol%. Ca 8 La 2 (PO 4 ) 6 O 2 :Sm 3+ phosphor has the good thermal stability and emission color stability. The luminous mechanism, concentration quenching, and thermal quenching are explained, respectively. The experimental results indicate that Ca 8 La 2 (PO 4 ) 6 O 2 :Sm 3+ phosphor as red orange component has a potential application in white LED based on near ultraviolet LED chip.
研究领域:
材料科学
·
无机化学
·
发光材料
·
固体物理
·
光电功能材料
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·Vol. 48
·期 2
·1836-1843
·
IF 4.527
Ruiting Zhang,Yahong Jin,Lifang Yuan,Chuanlong Wang,Guangting Xiong,Haoyi Wu,Li Chen,Yihua Hu
At present, for inorganic photochromic materials, the single function limits their application level in the field of optical storage and anti-counterfeiting. Generally, the reversible modulation of photoluminescence is achieved through a photochromic process, thereby improving the ability of the photochromic material to store information. Here, we designed a Sm 3+ doped perovskite oxide (SrZrO 3 :Sm 3+ ) inorganic photochromic material. Combined with its red photoluminescence and photochromic properties, it can realize dual information storage and recognition functions. The fluorescence regulation function is realized by the doping of Sm 3+ , which is conducive to the application in the direction of optical switch. The mechanism of photoluminescence and photochromism was studied. Finally, a flexible film with SrZrO 3 :Sm 3+ material was fabricated to demonstrate rewritable optical recording and storage and reading of dual optical information.
研究领域:
材料科学
·
光学存储
·
光致发光
·
智能材料
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DOI
高影响因子
危险品化学品经营许可证（带存储）