Optical Materials最新文献_第9页

Tailoring the broadband optical properties of niobium-doped zinc oxide thin films via reactive magnetron co-sputtering 通过反应磁控共溅射调整掺铌氧化锌薄膜的宽带光学特性

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-23 DOI: 10.1016/j.optmat.2025.117825

Lirong Sun , Faisal Mehmood , John G. Jones , Lauren M. Loftus , Tod A. Grusenmeyer , Ruth Pachter , Peter R. Stevenson

Niobium-doped zinc oxide (NZO) thin films were synthesized under ambient temperature via reactive magnetron co-sputtering, representing a tailorable transparent conductive oxide platform. This work combines experimental fabrication and broadband characterization with first-principles density functional theory calculations to investigate the material's properties. Experimentally, the niobium (Nb) content was controlled by varying the sputtering power (from 0 to 75 W) on a Nb target while co-sputtering zinc. Structural, electrical, and optical properties were characterized over a wide spectral range (200 nm–30 μm). Increasing the Nb doping concentration resulted in films with improved (002) c-axis crystallinity, lower electrical resistivity reaching a minimum of 2.40 x10⁻³ Ω cm, and enhanced near-infrared (NIR) reflectance, all while maintaining high transparency in the visible region. Density functional theory calculations of NZO revealed that incorporating an oxygen vacancy proximate to the Nb dopant is critical, where this model produced calculated optical property trends in significantly better agreement with our experimental results. This combined approach demonstrates that the optoelectronic behavior of NZO is governed by a synergy between the Nb dopant and oxygen deficiency, providing a predictive framework for designing advanced optical coatings.

采用反应磁控共溅射法在常温下合成了掺铌氧化锌（NZO）薄膜，形成了一种可定制的透明导电氧化物平台。这项工作结合了实验制造和宽带特性与第一性原理密度泛函理论计算来研究材料的性质。实验中，在共溅射锌的同时，通过改变溅射功率（0 ~ 75 W）来控制铌（Nb）的含量。在200 nm-30 μm的宽光谱范围内对其结构、电学和光学性质进行了表征。随着铌掺杂浓度的增加，薄膜的（002）c轴结晶度提高，电阻率降低，达到最低的2.40 x10−3 Ω cm，近红外（NIR）反射率增强，同时在可见光区域保持高透明度。NZO的密度泛函理论计算表明，在Nb掺杂物附近加入一个氧空位是至关重要的，该模型计算出的光学性质趋势与我们的实验结果明显更吻合。这种结合的方法表明，NZO的光电行为是由铌掺杂剂和氧缺乏之间的协同作用控制的，为设计先进的光学涂层提供了预测框架。

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引用次数: 0

Effect of the introduction of BaF2 on the hydroxyl content and 2.7 μm luminescence properties of tellurite glasses 引入BaF2对碲酸盐玻璃中羟基含量及2.7 μm发光性能的影响

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-22 DOI: 10.1016/j.optmat.2025.117820

Zijian Wu, Zongxian Wang, Bingpeng Li, Ying Tian, Ruoshan Lei, Feifei Huang, Shiqing Xu

A series of fluorotellurite glasses were prepared using the melt-quenching method, and the effects of adding moderate amounts of BaF₂ on the structure and optical properties of the tellurite glasses were investigated. Furthermore, the luminescent properties of Er³⁺-doped fluorotellurite glasses were further analyzed. The results indicate that, when the BaF₂ content reaches 15 mol%, the fluorotellurite glass exhibits high infrared transmittance (85.7 %), a low hydroxyl absorption coefficient (0.25 cm⁻¹), and good thermal stability (ΔT = 129 °C). These findings suggest that moderate BaF₂ incorporation effectively reduces the hydroxyl content of the glass while preserving good thermal stability. Further analysis of mid-infrared fluorescence spectra reveals that the luminescence intensity at 2.7 μm reaches its maximum at an Er₂O₃ doping concentration of 6 mol%. The corresponding absorption and emission cross-sections are 5.93 × 10⁻²¹ cm² and 7.15 × 10⁻²¹ cm², respectively. These results demonstrate that the Er³⁺-doped fluorotellurite glass prepared in this study holds great potential as a gain medium for applications in mid-infrared fiber lasers.

采用熔淬法制备了一系列氟碲酸盐玻璃，研究了加入适量BaF2对氟碲酸盐玻璃结构和光学性能的影响。进一步分析了Er3+掺杂氟碲酸盐玻璃的发光性能。结果表明，当BaF2含量达到15 mol%时，氟碲酸盐玻璃具有较高的红外透过率（85.7%）、较低的羟基吸收系数（0.25 cm−1）和良好的热稳定性（ΔT = 129℃）。这些发现表明，适量的BaF2掺入有效地降低了玻璃的羟基含量，同时保持了良好的热稳定性。进一步的中红外荧光光谱分析表明，当Er2O3掺杂浓度为6 mol%时，2.7 μm处的发光强度达到最大。相应的吸收和发射截面分别为5.93 × 10−21 cm2和7.15 × 10−21 cm2。这些结果表明，本研究制备的掺Er3+氟碲酸盐玻璃作为增益介质应用于中红外光纤激光器具有很大的潜力。

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引用次数: 0

Preparation and optical properties of chromium-doped aluminosilicate phosphor (SrAl2Si2O8: Cr3+) with narrow-band 694 nm fluorescent emission and its LED used as a light source for a polarimeter 具有694 nm窄带荧光发射的掺铬铝硅酸盐荧光粉（SrAl2Si2O8: Cr3+）的制备和光学性质及其LED作为偏振计光源

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-22 DOI: 10.1016/j.optmat.2025.117823

Shudan Yang , Kunpeng Gao , Junqi Tang

The ruby R-line (694 nm) plays a vital role in sensing and photonics, yet discovering new efficient host materials remains challenging. In this paper, we report a novel type of narrow-band emitting aluminosilicate phosphor (SrAl₂Si₂O₈: Cr³⁺) synthesized via a solid-state reaction. The phosphor exhibits an intense, sharp emission at 694 nm with a full width at half maximum (FWHM) of 3.04 nm, arising from the spin-forbidden ²E→⁴A₂ transition of Cr³⁺. The material shows excellent thermal stability, retaining 74.44 % of the room-temperature intensity at 423 K. At the optimal concentration (0.02 mol of Cr³⁺), the internal quantum efficiency (IQE) is 8.34 %. Remarkably, as the amount of co-doped potassium ions (K⁺) increases, the luminescence intensity also shows a significant enhancement. A detailed analysis of the photoluminescence dynamics reveals that this enhancement is primarily driven by an 71.6 % increase in the radiative transition rate (k_r), indicating an optimized local crystal field. A phosphor-converted LED (pc-LED) fabricated with this phosphor achieves an output power of 56.45 mW at 100 mA. This pc-LED light source is used to replace the sodium light source in the traditional polarimeter to observe the rotation of the polarization plane. This study exhibits a new, high-performance ruby-line phosphor and elucidate a radiative-rate-enhancement mechanism that provides a practical strategy for designing next-generation narrow-band luminescent materials.

红宝石r线（694 nm）在传感和光子学中起着至关重要的作用，但发现新的高效宿主材料仍然具有挑战性。本文报道了一种新型窄带发光铝硅酸盐荧光粉（SrAl2Si2O8: Cr3+）的固态合成方法。由于Cr3+的2E→4A2跃迁，该荧光体在694 nm处表现出强烈、锐利的发射，半峰全宽为3.04 nm。该材料表现出优异的热稳定性，在423 K时保持了74.44%的室温强度。在最佳浓度（0.02 mol Cr3+）下，内量子效率（IQE）为8.34%。值得注意的是，随着共掺杂钾离子（K+）量的增加，发光强度也有显著增强。详细的光致发光动力学分析表明，这种增强主要是由于辐射跃迁率（k_r）增加了71.6%，表明局部晶体场得到了优化。用该荧光粉制备的磷转换LED （pc-LED）在100毫安时的输出功率为56.45毫瓦。这种pc-LED光源是用来代替传统偏振光计中的钠光源来观测偏振面的旋转。本研究展示了一种新的高性能红宝石线荧光粉，并阐明了辐射率增强机制，为设计下一代窄带发光材料提供了实用策略。

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引用次数: 0

Passive Q-switched and passive mode-locked Tm:YAP lasers based on NbS2 nanosheets as saturable absorber 基于NbS2纳米片的被动调q和被动锁模Tm:YAP激光器

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-22 DOI: 10.1016/j.optmat.2025.117804

Ying Xue Han , Huan Li Wang , Hai Peng Li , Yu Wen He , Xin Zhi Ma , Qiong Gao , XiuRong Qu , Lin Jun Li

Niobium disulfide (NbS₂), a two-dimensional material with attractive nonlinear optical properties, was fabricated into a high-quality saturable absorber (SA) using the liquid-phase exfoliation method. Its nonlinear response was characterized, showing a modulation depth of 7.01 %. For the first time, NbS₂-SA was integrated into a Tm:YAP solid-state laser to realize both passive Q-switching (PQS) and passive mode-locking (PML). In PQS operation, stable pulses with a width of 355 ns were obtained at a repetition rate of 75.75 kHz, corresponding to a peak power of 19.04 W. Under PML conditions, ultrashort pulses of 872.2 ps were achieved at a repetition rate of 84 MHz. These results highlight the excellent modulation capability of NbS₂-SA in the 2-μm spectral region. This work confirms its practical applicability and promising potential for ultrafast laser modulation in the mid-infrared band.

采用液相剥离法制备了具有非线性光学特性的二维材料二硫化铌（NbS2）。对其非线性响应进行了表征，显示出7.01%的调制深度。首次将NbS2-SA集成到Tm:YAP固态激光器中，实现了无源q开关（PQS）和无源锁模（PML）。在PQS操作中，以75.75 kHz的重复频率获得了宽度为355 ns的稳定脉冲，峰值功率为19.04 W。在PML条件下，在84 MHz的重复频率下实现了872.2 ps的超短脉冲。这些结果表明NbS2-SA在2 μm光谱区域具有良好的调制能力。这一工作证实了其在中红外波段超快激光调制方面的实用性和广阔的应用前景。

引用次数: 0

Z-scan measurements of nonlinear absorption and nonlinear refractive index for PVD-grown CoTe2 thin film pvd生长CoTe2薄膜非线性吸收和非线性折射率的z扫描测量

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-22 DOI: 10.1016/j.optmat.2025.117824

Janghyun Ryu , Yeong Gwang Kim , Suh-young Kwon , Jaehak Choi , Taeho Woo , Jeehwan Kim , Donguk Lee , Young Jun Chang , Chao-Kuei Lee , Tae Joong Eom , Ju Han Lee

This study investigated the nonlinear optical properties of cobalt ditelluride (CoTe₂) thin films synthesized via physical vapor deposition (PVD). The fabricated CoTe₂ films, with a thickness of approximately 80 nm, exhibited high compositional uniformity. Based on these characteristics, open-aperture (OA) and closed-aperture (CA) Z-scan measurements were performed at 1560 nm and 1910 nm to determine the nonlinear absorption coefficient (β) and nonlinear refractive index (n₂), respectively. The experimental results revealed pronounced intensity-dependent saturable absorption and self-defocusing behavior, with a clear third-order nonlinear response observed at both wavelengths. Specifically, β = ∼−1.16 × 10⁴ cm/GW and n₂ = ∼−1.28 cm²/GW were obtained at 1560 nm, while β = ∼−13.9 × 10⁴ cm/GW and n₂ = ∼−0.87 cm²/GW were extracted at 1910 nm.

研究了物理气相沉积（PVD）法制备的二碲化钴（CoTe2）薄膜的非线性光学性质。制备的CoTe2薄膜厚度约为80 nm，具有较高的成分均匀性。基于这些特性，分别在1560 nm和1910 nm处进行了开孔（OA）和闭孔（CA） z扫描，测定了非线性吸收系数（β）和非线性折射率（n2）。实验结果揭示了明显的强度依赖饱和吸收和自散焦行为，在两个波长下都观察到明显的三阶非线性响应。在1560 nm处得到β = ~−1.16 × 104 cm/GW和n2 = ~−1.28 cm2/GW，而在1910 nm处得到β = ~−13.9 × 104 cm/GW和n2 = ~−0.87 cm2/GW。

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引用次数: 0

Optical characterization of Eu3+/Gd3+ co-doped Phosphate glasses for efficient energy transfer Eu3+/Gd3+共掺磷酸盐玻璃高效能量转移的光学表征

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-20 DOI: 10.1016/j.optmat.2025.117819

Amel Abdallah , Chaker Bouzidi

A phosphate glass with the chemical composition (60-x-y)P₂O₅–15ZnO–15CaCO₃–10Li₂CO₃ xEu₂O₃-yGd₂O₃ was doped with series trivalent europium Eu³⁺ (x = 0.5, 0.75, 1 and 1.5 mol% and y = 0). The co-doped sample with Eu³⁺ and Gd³⁺ (x = y = 0.5 mol%). The synthesis was carried out using a melt quenching technique. We analyzed the material structural and optical properties extensively. Photoluminescence (PL) measurements revealed a strong red emission at 616 nm, with concentration quenching observed at 1 mol% of Eu₂O₃. Notably, Co-doping with Gd³⁺ significantly enhanced the Eu³⁺ emission intensity, indicating efficient energy transfer from Gd³⁺ to Eu³⁺ ions. Judd–Ofelt analysis confirmed improved radiative properties, and the incorporation of Gd³⁺ increased the lifetime of the ⁵D₀ state of Eu³⁺, further supporting energy transfer. Furthermore, co-doping with Gd³⁺ improved the chromaticity values and color of the Eu³⁺ red emission, as shown by the CIE color coordinates, while the correlated color temperature CCT of PZCLE_0.5 and PZCLE_0.5G_0.5 are 1542 and 1301 K, respectively.

用系列三价铕Eu3+ （x = 0.5, 0.75, 1和1.5 mol%, y = 0）掺杂了化学成分为（60-x-y） P2O5-15ZnO-15CaCO3-10Li2CO3 xEu2O3-yGd2O3的磷酸盐玻璃。Eu3+和Gd3+共掺杂样品（x = y = 0.5 mol%）。采用熔体淬火技术进行了合成。我们对材料的结构和光学性能进行了广泛的分析。光致发光（PL）测量显示，在616 nm处有强烈的红色发射，在1 mol%的Eu2O3中观察到浓度猝灭。值得注意的是，与Gd3+共掺杂显著增强了Eu3+的发射强度，表明Gd3+向Eu3+离子的能量转移效率很高。Judd-Ofelt分析证实了Eu3+的辐射性能得到改善，Gd3+的加入增加了Eu3+ 5D0态的寿命，进一步支持了能量转移。此外，Gd3+的共掺杂改善了Eu3+红色发射的色度值和颜色，如CIE颜色坐标所示，PZCLE0.5和PZCLE0.5 g0.5的相关色温CCT分别为1542和1301 K。

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引用次数: 0

Synthesis of TiO2 nanorod arrays on various substrates for optical sensing of heavy metal ions 在不同基底上合成用于重金属离子光学传感的TiO2纳米棒阵列

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-19 DOI: 10.1016/j.optmat.2025.117812

Quang-Duy Dao , Hoa Nguyen Thi Thanh , Nghia Nguyen Tri , Tu Le Tuan , Van Bui Hong , Loc Do Quang , Hanh Hong Mai , Giang Bach Huong , Huy Nguyen Duy

Synthesis of TiO₂ nanorod arrays on TiO₂ thin films deposited via pulsed electron deposition (PED) and on fluorine-doped tin oxide (FTO) substrates using hydrothermal methods, with a focus on their application in fluorescent-based detection of heavy metal ions, is demonstrated. Although rutile-phase TiO₂ nanorods are successfully developed on both PED-fabricated TiO₂ thin films and FTO substrates, vertically aligned and uniformly distributed nanorods preferentially form on FTO substrates due to their compatible crystal structure and well-defined grain boundaries. Interestingly, the density and uniformity of TiO₂ nanorods on PED-deposited thin films are significantly enhanced by modulating the acidity of the precursor solution. It is proposed that lowering the proton (H⁺) concentration suppresses the formation of positively charged (Ti–OH₂)⁺ complexes and mitigates the acid-induced corrosion of the TiO₂ seeding layer, thereby promoting subsequent nucleation and growth of TiO₂ nanorods. The fluorescence sensor, based on TiO₂ nanorods grown on PED-derived TiO₂ thin films, achieves limit of detection of 0.1 μM for Fe³⁺ ions and 0.3 μM for Pb²⁺ ions, with corresponding linear detection ranges of 0.05 μM–1 μM and 0.005 μm–1 μM, respectively. These findings highlight the considerable potential of TiO₂ nanostructures for high-sensitivity heavy metal ion sensing application.

通过脉冲电子沉积（PED）和水热法在TiO2薄膜和氟掺杂氧化锡（FTO）衬底上合成TiO2纳米棒阵列，重点研究了它们在基于荧光的重金属离子检测中的应用。虽然金红石相TiO2纳米棒可以在ped制备的TiO2薄膜和FTO衬底上成功制备，但由于其兼容的晶体结构和明确的晶界，垂直排列和均匀分布的纳米棒优先在FTO衬底上形成。有趣的是，通过调节前驱体溶液的酸度，沉积在ped薄膜上的TiO2纳米棒的密度和均匀性显著增强。提出降低质子（H+）浓度可抑制带正电的(Ti-OH2)+络合物的形成，减轻酸对TiO2种子层的腐蚀，从而促进TiO2纳米棒的后续成核和生长。基于TiO2纳米棒的荧光传感器对Fe3+离子和Pb2+离子的检测限分别为0.1 μM和0.3 μM，线性检测范围分别为0.05 μM - 1 μM和0.005 μM - 1 μM。这些发现突出了TiO2纳米结构在高灵敏度重金属离子传感应用中的巨大潜力。

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引用次数: 0

Photocatalytic degradation effects of graphene oxide on the properties of (NixZn1-x)O mixed oxides synthesized by hydrothermal technique 氧化石墨烯光催化降解对水热法合成（NixZn1-x）O混合氧化物性能的影响

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-18 DOI: 10.1016/j.optmat.2025.117807

Adil Alshoaibi , Agnes C. Nkele , Femi D. Matthew , Chawki Awada , Shumaila Islam , Fabian I. Ezema

This study investigated the properties of pristine and graphene-containing (Ni_xZn_1-x)O mixed oxides synthesized by a hydrothermal process to elucidate the mechanisms behind the enhanced degradation of methylene blue using a photocatalytic reactor. The mixtures were prepared at x concentrations of 0.4 and 0.6 to study their structure, morphology, constituent elements, optical, chemical, photoluminescence (PL), and photocatalytic characteristics. The films revealed hexagonal structured patterns with a nanoflaked morphology and confirmed the deposition of constituent elements. The dense morphology and crystalline structure of the mixed oxides contribute to the improved photocatalytic performance. The extrapolated band gap energies of the samples slightly decreased upon addition of the graphene oxide (GO) with high PL intensities recorded. Adding GO excellently increased the photocatalytic degradation efficiency of the mixed oxides to over 80 % for methylene blue dye within a few minutes. The pseudo first-order rate constants for the (ZnO)₀_·₆(NiO)_0.4, (ZnO)₀_·₄(NiO)_0.6, GO/(ZnO)₀_·₆(NiO)_0.4, and GO/(ZnO)₀_·₄(NiO)_0.6 films were 0.005, 0.004, 0.023, and 0.022 per minute respectively. These useful results make them good for potential electronic and photocatalytic device applications.

本研究研究了水热法合成的原始和含石墨烯（NixZn1-x）O混合氧化物的性质，以阐明光催化反应器增强亚甲基蓝降解的机理。在x浓度为0.4和0.6的条件下制备混合物，研究其结构、形貌、组成元素、光学、化学、光致发光（PL）和光催化特性。薄膜呈现出纳米片状的六边形结构，并证实了组成元素的沉积。混合氧化物的致密形态和晶体结构有助于提高光催化性能。外推的带隙能在加入氧化石墨烯（GO）后略有下降，并记录了高PL强度。加入氧化石墨烯后，混合氧化物对亚甲基蓝染料的光催化降解效率在几分钟内提高到80%以上。（ZnO） 0.6 (NiO)0.4、（ZnO） 0.4 (NiO)0.6、GO/(ZnO) 0.6 (NiO)0.4和GO/(ZnO) 0.4 (NiO)0.4的准一阶速率常数分别为0.005、0.004、0.023和0.022 / min。这些有用的结果使它们具有潜在的电子和光催化器件应用前景。

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引用次数: 0

Developing low-cost nanohybrid of CuO nanoflakes and graphene thin film for sustainable photodetector applications 开发低成本的CuO纳米片与石墨烯薄膜的复合材料，用于可持续光电探测器

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-17 DOI: 10.1016/j.optmat.2025.117809

Duc Anh Ngo , Le Thai Duy , Nhat Minh Nguyen , Kien Quoc Luu , Phan Phuong Ha La , Thi Thu Thao Bui , Thi Thanh Van Tran , Cong Khanh Tran , Vinh Quang Dang

In recent years, the development of low-cost and flexible optoelectronic devices with minimal chemical usage has attracted increasing attention for sustainable development. This study introduces our development of a flexible visible photodetector based on a nanohybrid of copper oxide nanoflakes (2D-CuO) and reduced graphene oxide thin film (rGO), using just five initial materials. Particularly, the hydrothermal growth of 2D-CuO needs water and Cu salt, and the rGO production uses graphene oxide and hydrazine (reducing vapor). To build a flexible photodetector, instead of metal evaporation, low-power laser sintering can be employed to create electroconductive carbon electrodes from a polyimide substrate (i.e., carbonization of polyimide) before coating the active channel. The photoresistive device, consisting of the 2D-CuO/rGO active channel and carbon electrodes, shows stable operation under 464 nm visible light illumination at various bending radii of 4.2–12.2 mm. Notably, the flexible device exhibited consistent responsivity and photocurrent values with no significant degradation after 10,000 bending cycles (at 12.2 mm radius). That highlights the significance of this study, which paves the way for the development of sustainable applications, especially wearable sensor systems.

近年来，低成本、柔性、低化学用量的光电器件的可持续发展越来越受到人们的关注。本研究介绍了我们基于氧化铜纳米片（2D-CuO）和还原氧化石墨烯薄膜（rGO）的纳米混合物开发的柔性可见光探测器，仅使用五种初始材料。其中，水热生长2D-CuO需要水和铜盐，还原氧化石墨烯的生产需要氧化石墨烯和肼（还原蒸汽）。为了构建一个柔性光电探测器，在涂覆有源通道之前，可以使用低功率激光烧结来代替金属蒸发，在聚酰亚胺衬底上制造导电碳电极（即聚酰亚胺的碳化）。该光敏器件由2D-CuO/rGO有源通道和碳电极组成，在464 nm可见光照射下，在4.2 ~ 12.2 mm的弯曲半径范围内表现出稳定的工作特性。值得注意的是，在10,000次弯曲循环（半径为12.2 mm）后，柔性器件表现出一致的响应性和光电值，没有明显的退化。这凸显了这项研究的重要性，它为可持续应用的发展铺平了道路，特别是可穿戴传感器系统。

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引用次数: 0

Thermally stimulated luminescence properties of (Zn,Be)Al2O4 translucent composite ceramics （Zn,Be）Al2O4半透明复合陶瓷的热激发发光性能

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2025-12-17 DOI: 10.1016/j.optmat.2025.117810

Satoshi Honjo , Kensei Ichiba , Daiki Shiratori , Takumi Kato , Daisuke Nakauchi , Noriaki Kawaguchi , Takayuki Yanagida

(Zn_1-x,Be_x)Al₂O₄ translucent composite ceramics with x = 0, 0.25, 0.5, 0.75, 0.875, and 1 were fabricated by spark plasma sintering (SPS), and their luminescence properties were investigated. In the Photoluminescence (PL) spectra, the samples with x = 0, 0.25, 0.5, 0.75, and 0.875 exhibited emission associated with oxygen defects at 510 nm under 320 nm excitation. Thermally stimulated luminescence (TSL) glow curves revealed prominent glow peaks at 110 and 240 °C. In the TSL spectra of all samples, emission centered at 510 nm was observed, similar to that in the PL spectra. Among them, the x = 0.75 sample exhibited the highest intensity. Furthermore, this sample exhibited a linear TSL dose–response across an exceptionally broad dose range, spanning from 0.01 to 1000 mGy.

采用火花等离子烧结（SPS）法制备了x = 0、0.25、0.5、0.75、0.875和1的（Zn1-x,Bex）Al2O4半透明复合陶瓷，并对其发光性能进行了研究。在光致发光（PL）光谱中，x = 0、0.25、0.5、0.75和0.875的样品在320 nm激发下，在510 nm处表现出与氧缺陷相关的发光。热激发发光（TSL）曲线在110°C和240°C处显示出明显的发光峰。在所有样品的TSL光谱中，都观察到以510 nm为中心的发射，与PL光谱相似。其中，x = 0.75的样品强度最高。此外，该样品在0.01至1000 mGy的极宽剂量范围内表现出线性TSL剂量响应。

引用次数: 0