Advanced Optical Materials最新文献

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Self-Powered, Broadband, and Polarization-Sensitive Photodetector with Nb-WS2/Ta2NiSe5 Van der Waals Heterostructure Nb-WS2/Ta2NiSe5范德华异质结构自供电、宽带、偏振敏感光电探测器
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-10 DOI: 10.1002/adom.202403463
Jinling Xie, Jiayue Han, Jiaming Jiang, Lixin Liu, Ziyi Fu, Jun Wang
{"title":"Self-Powered, Broadband, and Polarization-Sensitive Photodetector with Nb-WS2/Ta2NiSe5 Van der Waals Heterostructure","authors":"Jinling Xie,&nbsp;Jiayue Han,&nbsp;Jiaming Jiang,&nbsp;Lixin Liu,&nbsp;Ziyi Fu,&nbsp;Jun Wang","doi":"10.1002/adom.202403463","DOIUrl":"https://doi.org/10.1002/adom.202403463","url":null,"abstract":"<p>Photodetectors play a crucial role in various applications, including communication, imaging, environmental monitoring, and security surveillance. However, developing photodetectors that can simultaneously achieve high sensitivity, high responsivity, low power consumption, polarization sensitivity, and broadband detection remains a significant challenge. In this investigation, the anisotropic properties of Ta₂NiSe₅ are utilized for mid-infrared polarization-sensitive photodetection and select suitable 2D materials to enhance device performance. Nb-WS₂/Ta₂NiSe₅ Van der Waals heterojunction photodetector with low power consumption and broadband response, covering the wavelength range from 405 nm to 3.5 µm, based on the built-in field. Additionally, the device shows excellent performance at 660 nm, with a responsivity of 57.64 A W<sup>−1</sup>, an external quantum efficiency (EQE) of 10 854%, rapid response (118 µs), and recovery times (13 µs). Furthermore, the Nb-WS₂/Ta₂NiSe₅ structure modulates charge distribution at the interface, enhancing polarization sensitivity and the polarization ratio of 2.2 at 3.5 µm. This work provides a novel strategy for the development of multifunctional, high-performance photodetectors and opens new avenues for the design and application of next-generation advanced photodetection devices.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reservoir Computing with All-Optical Non-Fading Memory in a Self-Pulsing Microresonator Network 在自脉冲微谐振器网络中利用全光无衰减存储器进行存储计算
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-10 DOI: 10.1002/adom.202403133
Alessio Lugnan, Stefano Biasi, Alessandro Foradori, Peter Bienstman, Lorenzo Pavesi
{"title":"Reservoir Computing with All-Optical Non-Fading Memory in a Self-Pulsing Microresonator Network","authors":"Alessio Lugnan,&nbsp;Stefano Biasi,&nbsp;Alessandro Foradori,&nbsp;Peter Bienstman,&nbsp;Lorenzo Pavesi","doi":"10.1002/adom.202403133","DOIUrl":"https://doi.org/10.1002/adom.202403133","url":null,"abstract":"<p>Photonic neuromorphic computing may offer promising applications for a broad range of photonic sensors, including optical fiber sensors, to enhance their functionality while avoiding loss of information, energy consumption, and latency due to optical-electrical conversion. However, time-dependent sensor signals usually exhibit much slower timescales than photonic processors, which also generally lack energy-efficient long-term memory. To address this, a first implementation of physical reservoir computing with non-fading memory for multi-timescale signal processing is experimentally demonstrated. This is based on a fully passive network of 64 coupled silicon microring resonators. This compact photonic reservoir is capable of hosting energy-efficient nonlinear dynamics and multistability. It can process and retain input signal information for an extended duration, at least tens of microseconds. This reservoir computing system can learn to infer the timing of a single input pulse and the spike rate of an input spike train, even after a relatively long period following the end of the input excitation. This operation is demonstrated at two different timescales, with approximately a factor of 5 difference. This work presents a novel approach to extending the memory of photonic reservoir computing and its timescale of application.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 11","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403133","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Revealing the Effect of Triplet–Triplet Annihilation Up-Conversion and Improving the Operational Lifetime by Exciton Management in Anthracene- and Pyrene-Based Blue Fluorescent OLEDs 揭示基于蒽基和比利牛斯基的蓝色荧光oled中三重-三重湮灭上转换和激子管理提高使用寿命的影响
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-10 DOI: 10.1002/adom.202403102
Jianhui Pan, Wei Liu, Lei Ying, Yue Yu, Xianfeng Qiao, Dezhi Yang, Yuguang Ma, Dongge Ma
{"title":"Revealing the Effect of Triplet–Triplet Annihilation Up-Conversion and Improving the Operational Lifetime by Exciton Management in Anthracene- and Pyrene-Based Blue Fluorescent OLEDs","authors":"Jianhui Pan,&nbsp;Wei Liu,&nbsp;Lei Ying,&nbsp;Yue Yu,&nbsp;Xianfeng Qiao,&nbsp;Dezhi Yang,&nbsp;Yuguang Ma,&nbsp;Dongge Ma","doi":"10.1002/adom.202403102","DOIUrl":"https://doi.org/10.1002/adom.202403102","url":null,"abstract":"<p>Anthracene- and pyrene-based organic fluorescent molecules with hybridized local and charge-transfer (HLCT) process can achieve highly efficient exciton utilization through harvesting high-lying triplet (T<sub>n</sub>, n ≥ 2) excitons via reverse intersystem crossing (hRISC) compared to conventional organic fluorescent molecules, but there exists a serious exciton loss caused by internal conversion (IC) from T<sub>n</sub> to T<sub>1</sub>.Nowadays, the stability difference between anthracene- and pyrene-based HLCT materials in OLEDs is rarely understood. In this article, the aging properties of anthracene derivated PAC and pyrene derivated CPPCN in the fabricated blue fluorescent OLEDs are systematically studied through exciton dynamics theory, and transient electroluminance and impedance spectroscopy measurements. It's experimentally found that the triplet exciton loss caused by IC is responsible for the device degradation. Through doping fluorescent emitter and introducing triplet-triplet annihilation upconversion layers in emissive layer, the IC process is efficiently suppressed and the operational lifetime is enhanced by ≈5.2 and 16 times under the luminance of 1000 cd m<sup>−2</sup> in PAC and CPPCN-based OLEDs, respectively. This work fully demonstrates the differences in the effects of anthracene and pyrene-based HLCT molecules on device stability, providing a basis for further improving the operational lifetime of blue fluorescent OLEDs based on HLCT molecules.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 11","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tuning Mechanoluminescence From Red to Near-Infrared Light in CaZnOS:Mn2+ CaZnOS:Mn2+从红光到近红外光的机械发光调谐
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-10 DOI: 10.1002/adom.202403472
Hongzhen Liu, Yuhe Shao, Chao Dou, Jing Zhao, Zhen Song, Quanlin Liu
{"title":"Tuning Mechanoluminescence From Red to Near-Infrared Light in CaZnOS:Mn2+","authors":"Hongzhen Liu,&nbsp;Yuhe Shao,&nbsp;Chao Dou,&nbsp;Jing Zhao,&nbsp;Zhen Song,&nbsp;Quanlin Liu","doi":"10.1002/adom.202403472","DOIUrl":"https://doi.org/10.1002/adom.202403472","url":null,"abstract":"<p>Mechanoluminescence (ML) materials can convert mechanical energy into photoelectrons and have significant potential for applications in intelligent sensing, self-driven luminescent displays, and human-computer interaction. Among the numerous ML systems, Mn<sup>2+</sup>-doped wurtzite-based phosphors have become a prominent ML family. However, their ML emissions are typically confined to visible light, which substantially limits their utility in fields such as biomechanics and bioimaging. Here, it is demonstrated that the photoluminescence (PL) and ML emission of CaZnOS:Mn<sup>2+</sup> can be tuned from the red to near-infrared light (peaked at 770 nm) by regulating the Mn<sup>2+</sup> ion concentration. The electronic paramagnetic resonance, PL lifetime, and various spectra reveal that the near-infrared emission originates from the enhanced magnetic interaction of Mn<sup>2+</sup> pairs due to intrinsic defects. The heavy Mn<sup>2+</sup>-doped CaZnOS elastomer with near-infrared ML emission exhibits distinct advantages over low Mn<sup>2+</sup>-doped CaZnOS with only red emission in the field of biomechanical imaging. This work achieves near-infrared emission in CaZnOS phosphors singly doped with Mn<sup>2+</sup> ions for the first time, providing a perspective for spectra broadening of Mn<sup>2+</sup> ions-doped phosphors.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Few Photons Probe Third-Order Nonlinear Properties of Nanomaterials in a Plasmonic Nanocavity 等离子体纳米腔中纳米材料三阶非线性特性的少光子探测
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-07 DOI: 10.1002/adom.202403484
Anupa Kumari, MohammadReza Aghdaee, Mathis Van de Voorde, Oluwafemi Stephen Ojambati
{"title":"Few Photons Probe Third-Order Nonlinear Properties of Nanomaterials in a Plasmonic Nanocavity","authors":"Anupa Kumari,&nbsp;MohammadReza Aghdaee,&nbsp;Mathis Van de Voorde,&nbsp;Oluwafemi Stephen Ojambati","doi":"10.1002/adom.202403484","DOIUrl":"https://doi.org/10.1002/adom.202403484","url":null,"abstract":"<p>Quantification of nonlinear optical properties is important for nano-optical devices, yet such measurements remain challenging at the single-particle level. Here, enhanced optical fields are harnessed inside a plasmonic nanocavity to mediate efficient nonlinear interactions with an individual particle. Reflection Z-scan technique was performed on individual nanocavities, reaching down to two photons per pulse, thus demonstrating a significantly higher efficiency beyond conventional methods. The few photons are sufficient to extract the nonlinear refractive index and nonlinear absorption coefficient of different nanomaterials, including perovskite and Au nano-objects and a molecular monolayer. This work is of great interest for investigating nonlinear optical interactions on the nanoscale and characterizing nanomaterials, including fragile biomolecules.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403484","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large Non-Resonant Infrared Optical Second Harmonic Generation in Bulk Crystals of Van der Waals Semiconductor, SnP2Se6 范德华半导体块状晶体中红外大非谐振二次谐波的产生,SnP2Se6
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-07 DOI: 10.1002/adom.202402649
Jadupati Nag, Saugata Sarker, Safdar Imam, Abishek Iyer, Michael J. Waters, Albert Suceava, James M. Rondinelli, Mercouri G. Kanatzidis, Venkatraman Gopalan
{"title":"Large Non-Resonant Infrared Optical Second Harmonic Generation in Bulk Crystals of Van der Waals Semiconductor, SnP2Se6","authors":"Jadupati Nag,&nbsp;Saugata Sarker,&nbsp;Safdar Imam,&nbsp;Abishek Iyer,&nbsp;Michael J. Waters,&nbsp;Albert Suceava,&nbsp;James M. Rondinelli,&nbsp;Mercouri G. Kanatzidis,&nbsp;Venkatraman Gopalan","doi":"10.1002/adom.202402649","DOIUrl":"https://doi.org/10.1002/adom.202402649","url":null,"abstract":"<p>2D van der Waals (vdW) materials have emerged as a highly promising candidates for nonlinear optical (NLO) applications. This study presents the synthesis, comprehensive linear optical, and optical second harmonic generation (SHG) characterization of a novel 2D vdW semiconductor SnP<sub>2</sub>Se<sub>6</sub> in its bulk single crystal form. It exhibits an indirect bandgap of ≈1.47 eV and an exceptional non-resonant SHG coefficient of <i>d</i><sub>33</sub> ∼ −222 ± 30 pm V<sup>−1</sup> at a fundamental wavelength of 2 µm, which is ≈7 times larger than that of the commercial AgGaSe<sub>2</sub> with a comparable bandgap. Density functional theory (DFT) calculations of the linear and nonlinear optical properties exhibit reasonable agreement with the experimental measurements, revealing the chemical origin of the enhanced properties. Moreover, SnP<sub>2</sub>Se<sub>6</sub> can exhibit both type-I and type-II phase matching over a wide spectral range, fulfilling one of the key criteria for an ideal NLO crystal. These exceptional properties position SnP<sub>2</sub>Se<sub>6</sub> as a highly promising candidate for NLO applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 9","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402649","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large Bidirectional Refractive Index Change in Silicon-rich Nitride via Visible Light Trimming 通过可见光微调富硅氮化物双向折射率的大变化
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-07 DOI: 10.1002/adom.202403420
Dmitrii Belogolovskii, Md Masudur Rahman, Karl Johnson, Vladimir Fedorov, Andrew Grieco, Nikola Alic, Abdoulaye Ndao, Paul K. L. Yu, Yeshaiahu Fainman
{"title":"Large Bidirectional Refractive Index Change in Silicon-rich Nitride via Visible Light Trimming","authors":"Dmitrii Belogolovskii,&nbsp;Md Masudur Rahman,&nbsp;Karl Johnson,&nbsp;Vladimir Fedorov,&nbsp;Andrew Grieco,&nbsp;Nikola Alic,&nbsp;Abdoulaye Ndao,&nbsp;Paul K. L. Yu,&nbsp;Yeshaiahu Fainman","doi":"10.1002/adom.202403420","DOIUrl":"https://doi.org/10.1002/adom.202403420","url":null,"abstract":"<p>Phase-sensitive integrated photonic devices are highly susceptible to minor manufacturing deviations, resulting in significant performance inconsistencies. This variability has limited the scalability and widespread adoption of these devices. Here, a major advancement is achieved through continuous-wave (CW) visible light (405 and 520 nm) trimming of plasma-enhanced chemical vapor deposition (PECVD) silicon-rich nitride (SRN) waveguides. The demonstrated method achieves precise, bidirectional refractive index tuning with a single laser source in CMOS-compatible SRN samples with refractive indices of 2.4 and 2.9 (measured at 1550 nm). By utilizing a cost-effective setup for real-time resonance tracking in micro-ring resonators, the resonant wavelength shifts as fine as 10 pm are attained. Additionally, a record red shift of 49.1 nm and a substantial blue shift of 10.6 nm are demonstrated, corresponding to refractive index changes of approximately 0.11 and −2 × 10<sup>−2</sup>. The blue and red shifts are both conclusively attributed to thermal annealing. These results highlight SRN's exceptional capability for permanent optical tuning, establishing a foundation for stable, precisely controlled performance in phase-sensitive integrated photonic devices.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403420","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Semifluoroalkyl n-Type Conjugated Polymers: Novel Cathode Interlayers for Air-Stable Organic Photodetectors 半氟烷基n型共轭聚合物:空气稳定有机光电探测器的新型阴极夹层
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-06 DOI: 10.1002/adom.202403477
Sihui Deng, Jiahui Wang, Junhui Miao, Jun Ma, Junli Hu, Jun Liu
{"title":"Semifluoroalkyl n-Type Conjugated Polymers: Novel Cathode Interlayers for Air-Stable Organic Photodetectors","authors":"Sihui Deng,&nbsp;Jiahui Wang,&nbsp;Junhui Miao,&nbsp;Jun Ma,&nbsp;Junli Hu,&nbsp;Jun Liu","doi":"10.1002/adom.202403477","DOIUrl":"https://doi.org/10.1002/adom.202403477","url":null,"abstract":"<p>Typical organic cathode interlayer (CIL) materials for solution-processed organic optoelectronic devices usually have polar side chains or polar/ionic groups, making them hydrophilic and thus limiting device stability. This manuscript reports a novel CIL material based on an n-type polythiophene backbone with semifluoroalkyl side chains (n-PT11) for developing high-performance organic photodetectors (OPDs) with excellent device stability. The n-type polythiophene backbone of n-PT11 has a low-lying LUMO/HOMO energy level of −4.27 eV/−6.21 eV, suppressing reversed hole injection. The semifluoroalkyl side chains enable n-PT11 processing with 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) for fabricating multilayer OPDs and exhibit low trap density for suppressing dark current density (<i>J</i><sub>d</sub>). As a result, n-PT11-based near-infrared (NIR) OPDs exhibit an ultra-low <i>J</i><sub>d</sub> of 1.00 × 10<sup>−9</sup> A cm<sup>−2</sup> and a high specific detectivity (<i>D<sup>*</sup></i>) of 3.06 × 10<sup>12</sup> cm Hz<sup>1/2</sup> W<sup>−1</sup> at −1 V, which is among the highest <i>D<sup>*</sup></i> values reported so far for NIR OPDs. Most importantly, the hydrophobicity of n-PT11 allows the OPD unprecedented air stability, with unencapsulated OPDs retaining 94% of their initial responsiveness after 2000 h in ambient conditions. To the best knowledge, this is the first report of conjugated polymers with semifluoroalkyl side chains as CILs in OPDs.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine Learning Enabled LED Lighting Using Scattering Optics 机器学习使LED照明使用散射光学
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-06 DOI: 10.1002/adom.202402788
Gangyi Li, Yuan Liu, Hao Liang, Xihua Wang
{"title":"Machine Learning Enabled LED Lighting Using Scattering Optics","authors":"Gangyi Li,&nbsp;Yuan Liu,&nbsp;Hao Liang,&nbsp;Xihua Wang","doi":"10.1002/adom.202402788","DOIUrl":"https://doi.org/10.1002/adom.202402788","url":null,"abstract":"<p>Illumination receives a great deal of attention as white light-emitting diodes become energy-efficient light sources in households and commercial buildings, on streets and highways, and at stadiums and construction sites. In general, lenses and mirrors are used to control the spatial distribution of white LED (WLED) light. Here, it is proposed to use an optical diffuser, the key device in scattering optics, to achieve a pre-defined WLED brightness distribution by nanocrystals and machine learning. Optical diffusers are typically used to create soft light (similar brightness from any angle of view), however, here the concentration of nanocrystals in a nanocomposite film (optical diffuser) to tune its optical property at different regions is altered. Machine learning is employed to achieve the inverse design of the optical diffuser pattern controlling the WLED brightness distribution, and this design task is beyond human capacities which are carried out using the brute force approach. In the end, several pre-defined WLED brightness distributions are demonstrated for showing the success of this efforts.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 9","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402788","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143688654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal Dynamics Induced by Surface Acoustic Waves in Lanthanide-Doped Core@Multishell Nanoparticles 镧系掺杂Core@Multishell纳米颗粒表面声波诱导的热动力学研究
IF 8 2区 材料科学
Advanced Optical Materials Pub Date : 2025-03-05 DOI: 10.1002/adom.202403497
Pablo B. Pinto, Pedro W. Matrone, Flávia S. Ferreira, Paulo V. Santos, Fernando A. Sigoli, Odilon D. D. Couto Jr.
{"title":"Thermal Dynamics Induced by Surface Acoustic Waves in Lanthanide-Doped Core@Multishell Nanoparticles","authors":"Pablo B. Pinto,&nbsp;Pedro W. Matrone,&nbsp;Flávia S. Ferreira,&nbsp;Paulo V. Santos,&nbsp;Fernando A. Sigoli,&nbsp;Odilon D. D. Couto Jr.","doi":"10.1002/adom.202403497","DOIUrl":"https://doi.org/10.1002/adom.202403497","url":null,"abstract":"<p>Accurate local temperature readout in integrated nanoscaled devices driven by high-frequency surface acoustic waves (SAWs) has a strong technological interest. The optical response of lanthanide (Ln)-doped NaLnF<sub>4</sub> core@multishell nanoparticles inserted into SAW delay lines is reported. The recombination dynamics between the <sup>2</sup><i>H</i><sub>11/2</sub> and <sup>4</sup><i>S</i><sub>3/2</sub> to the <sup>4</sup><i>I</i><sub>15/2</sub> states of Er<sup>3+</sup> is probed under SAWs modulation at 5, 225, and 290 K. It is shown that the spectral weight of the upconverted individual Stark levels of the <sup>4</sup><i>S</i><sub>3/2</sub> band changes with the SAW and that their recombination lifetimes decrease as the SAW power is increased. By monitoring the luminescence intensity ratio (LIR), it is shown that such dynamics is consistent with a temperature increase and a carrier repopulation process across the <sup>4</sup><i>S</i><sub>3/2</sub> Stark levels induced by Joule heating, which can reach up to 47 K at cryogenic temperatures. These effects, however, can be strongly suppressed by reducing the SAW duty cycle during the optical measurements. The results demonstrate that heating of nanoscopic systems integrated into SAW devices can be quite pronounced and that, since they do not interact with the SAW strain or piezoelectric field, these NaLnF<sub>4</sub> nanoparticles can be effectively employed as nanoscale in-situ and in-operando thermometers in such kind of application.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 14","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403497","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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