Advanced Optical Materials最新文献

{"title":"Tunneling in Persistent Luminescence","authors":"Hei-Yui Kai,&nbsp;Ka-Leung Wong,&nbsp;Peter A. Tanner","doi":"10.1002/adom.202500793","DOIUrl":"https://doi.org/10.1002/adom.202500793","url":null,"abstract":"<p>An overview of some key points in persistent luminescence (PersL) is provided with an emphasis on tunneling phenomena. Notably, key experimental criteria are provided that can substantiate the occurrence of thermal and athermal tunneling and localized transitions. These are elucidated by reference to a Case Study and to some other relevant works. Many experimental studies of PersL have assigned the mechanism to be tunneling on the basis of the linear relationship of PersL decay between intensity, <i>I</i>, and time, <i>t^−k</i>, where <i>k</i> is a constant, or <i>I</i>⁻¹ versus <i>t</i>. However, this relation also applies to the case where there is a uniform distribution of trap levels, which may be evident from the breadth of the TL peak. The key measurement for the assignment of below-conduction band processes is the absence of thermal conductivity.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 21","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500793","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705468","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}

{"title":"Dual-Channel Terahertz Frequency-Multiplexed Wavefront Manipulation Utilizing Flexible Metadevices","authors":"Zhiwen Zhou,&nbsp;Yunyun Ji,&nbsp;Fei Fan,&nbsp;Hao Wang,&nbsp;Jierong Cheng,&nbsp;Haifeng Xu,&nbsp;Shengjiang Chang","doi":"10.1002/adom.202500008","DOIUrl":"https://doi.org/10.1002/adom.202500008","url":null,"abstract":"<p>Flexible multi-channel metadevices not only exhibit richer information-carrying dimensions, but also aptly accommodate the application trends of wearable devices. This dual advantage enables them to possess significant potential in the realm of 6G communications. In this study, a flexible dual-channel frequency-multiplexed metadevice based on a polyimide (PI) substrate is proposed. Two different resonant meta-atoms are introduced to form a hybrid cell structure in the metal-insulator-metal configuration, which can achieve independent manipulation of electromagnetic response for co-polarized reflected waves and cross-polarized transmitted waves. The experimental results show that the proposed hybrid metadevice can achieve quasi-continuous phase gradient distribution, resulting in a deflection of the transmission channel to 20 to 35° (0.63 to 0.38 THz) and a deflection of the reflection channel to 37.5 to 52.5° (0.27 to 0.35 THz). In addition, the bending characteristics of the dual-channel beam deflection metadevice are explored. Different degrees of changes in the +1st order diffraction intensities in transmission and reflection channels are caused by the bending of the metadevice. Therefore, investigating these characteristics of metadevices offers insights and approaches for the accurate design and management of flexible devices, which suggest promising applications in 6G wearable communication systems.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551307","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}

{"title":"Fabrication and Optical Characterization of CMOS-Compatible Honeycomb-Like Large-Scale Lattices of Near-Field Coupled Plasmonic TiN Nanotriangles","authors":"Jon Schlipf,&nbsp;Maria Alessandra Cutolo,&nbsp;Costanza Lucia Manganelli,&nbsp;Sebastian Reiter,&nbsp;Götz Seibold,&nbsp;Oliver Skibitzki,&nbsp;Christian Wenger,&nbsp;Inga Anita Fischer","doi":"10.1002/adom.202403408","DOIUrl":"https://doi.org/10.1002/adom.202403408","url":null,"abstract":"<p>Honeycomb-like plasmonic titanium nitride nanotriangle arrays defined by photolithography and fabricated in a modified silicon-germanium electronic–photonic integrated circuit process in a state-of-the-art pilot line. The nanotriangle arrays are characterized in experiments and simulations. The momentum-dependent reflectance spectra exhibit not only features that are consistent with surface lattice resonances in the honeycomb lattice but also minima governed by near-field coupling of the individual nanotriangles. The optical characterization results in combination with simulation-based predictions indicate that such nanotriangle arrays are capable of supporting collective plasmonic resonances that can be described as massless Dirac particles. The fabrication approach opens up the possibility of integrating the structures into device fabrication processes, and avenues toward near-infrared sensing and communication applications are predicted.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202403408","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551308","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}

{"title":"Wireless Nano Irradiance Meter Based on Upconversion Luminescence Lifetime","authors":"Alejandro Casillas-Rubio,&nbsp;Marco Laurenti,&nbsp;Juan Pedro Cascales,&nbsp;Oscar G. Calderón,&nbsp;Diego Mendez-Gonzalez,&nbsp;Sonia Melle","doi":"10.1002/adom.202500093","DOIUrl":"https://doi.org/10.1002/adom.202500093","url":null,"abstract":"<p>Measuring light irradiance, or power density, within a material is essential for ensuring the precision, efficiency, and safety of light-based technologies, such as photodynamic therapies, optical sensing, and material processing. However, this task becomes particularly challenging in scenarios involving highly scattering or absorbing media, dynamic systems with varying properties, or confined and hardly accessible compartments. These challenges can be addressed by using colloidal luminescent nanomaterials with luminescence lifetimes strongly dependent on excitation irradiance. Building on this, an upconversion lifetime-based Nano Irradiance Meter (nIM) is proposed, employing, on SrYb^{3 +}F₅:<span></span><math>\u0000 <semantics>\u0000 <msubsup>\u0000 <mi>Tm</mi>\u0000 <mrow>\u0000 <mn>0.5</mn>\u0000 <mo>%</mo>\u0000 </mrow>\u0000 <mrow>\u0000 <mn>3</mn>\u0000 <mo>+</mo>\u0000 </mrow>\u0000 </msubsup>\u0000 <annotation>${rm Tm}_{0.5%}^{3+}$</annotation>\u0000 </semantics></math>@CaF₂ upconverting nanoparticles. This nIM operates within the first biological window and allows the direct estimation of laser irradiance, without prior knowledge of the area illuminated by the excitation beam. The feasibility of the sensor is validated through a calibration process, correlating the lifetime of the 770 nm upconversion luminescence of Tm^{3 +} ions with the 967 nm excitation irradiance. The sensor achieved a sensitivity of 0.9% W⁻¹ cm² at low irradiances (≈17 W cm⁻²) and 0.008% W⁻¹ cm² at high irradiances (≈5 kW cm⁻²), surpassing previously reported results based on ratiometric luminescence approaches. Finally, its robust performance under real-life conditions across various media is demonstrated.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 21","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500093","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705476","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}

{"title":"Highly-Efficient Visible-Light-Excitable TADF-Type Organic Afterglow Materials via Intramolecular Charge Transfer Technology","authors":"Xun Li,&nbsp;Guangming Wang,&nbsp;Zi Ye,&nbsp;Biao Xu,&nbsp;Hongxin Gao,&nbsp;Kaka Zhang","doi":"10.1002/adom.202403551","DOIUrl":"https://doi.org/10.1002/adom.202403551","url":null,"abstract":"<p>We present the development of three distinct highly efficient visible-light-excitable afterglow systems based on thermally activated delayed fluorescence (TADF) mechanisms, employing an intramolecular charge transfer strategy. The resulting TADF-type afterglow materials demonstrate emission lifetimes in the range of hundreds of milliseconds and photoluminescence quantum yields (PLQY) between 65% and 80%, exhibiting remarkable temperature-responsive properties. By incorporating an additional electron-donor functional group (D') into the molecular framework of donor-acceptor D-A-type luminophores, specifically difluoroboron β-diketonate (BF₂bdk), we designed novel D-A-D'-type compounds that exhibit a moderate rate of reverse intersystem crossing which facilitates the emergence of TADF-type afterglow from BF₂bdk in a rigid crystalline matrix. Furthermore, this design approach elevates the highest occupied molecular orbital energy level, thereby realizing TADF-type afterglow emission under visible light excitation. Our findings highlight the significance of this research in advancing the design of high-performance organic TADF afterglow materials.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551177","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}

{"title":"Constructing Hybrid Dimensional Nanowires Array/Nanosheet Heterojunction of GaSb/PbI2 for Self-Powered Imaging, Photocommunication, and Omnidirectional Weak-Light Photodetection","authors":"Zixu Sa,&nbsp;Siying Gao,&nbsp;Zeqi Zang,&nbsp;Pengsheng Li,&nbsp;Guangcan Wang,&nbsp;Mingxu Wang,&nbsp;Bowen Yang,&nbsp;Xiaoyue Wang,&nbsp;Lei Ge,&nbsp;Mingsheng Xu,&nbsp;Yanxue Yin,&nbsp;Zai-xing Yang","doi":"10.1002/adom.202500367","DOIUrl":"https://doi.org/10.1002/adom.202500367","url":null,"abstract":"<p>Interface contact and mismatched photosensitive area are challenging the hybrid dimensional heterojunction self-powered photodetection. Herein, the hybrid dimensional nanowires (NWs) array/nanosheet (NS) heterojunction of GaSb/PbI₂ is successfully constructed by the combination of contact printing technology and drop-casting process. Owing to the build-in electric field, the as-fabricated NW/NS heterojunction photodetector exhibits enhanced photoresponse compared to NW and NS photodetectors. Moreover, the NWs array/NS heterojunction photodetector shows an ultralow I_dark of 1.12 × 10⁻¹³ A, a superior I_light/I_dark ratio of 1.2 × 10⁴, and ultrafast photoresponse of 232/465 µs. The excellent photodetection performance enables the NWs array/NS hybrid dimensional heterojunction in omnidirectional photodetection, imaging, and photocommunication. Furthermore, the weak-light detection is also demonstrated successfully even at light intensity as low as 0.06 µW·mm⁻². This work paves the way of constructing hybrid dimensional heterojunction for high-performance multifunctional self-powered photodetection.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551174","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}

{"title":"Revealing the True Nature of Double-Peak Emission in 2D Perovskite Single Crystals Using Polariton Waveguides","authors":"Annalisa Coriolano,&nbsp;Anna Moliterni,&nbsp;Francesco Todisco,&nbsp;Laura Polimeno,&nbsp;Rosanna Mastria,&nbsp;Vincent Olieric,&nbsp;Carlotta Giacobbe,&nbsp;Milena De Giorgi,&nbsp;Dario Ballarini,&nbsp;Aurora Rizzo,&nbsp;Giuseppe Gigli,&nbsp;Cinzia Giannini,&nbsp;Ilenia Viola,&nbsp;Daniele Sanvitto,&nbsp;Luisa De Marco","doi":"10.1002/adom.202500299","DOIUrl":"https://doi.org/10.1002/adom.202500299","url":null,"abstract":"<p>In recent years, hybrid organic–inorganic perovskites have attracted great interest due to their intriguing properties, which make them ideal for a wide range of optoelectronic applications. This work provides new insights into the understanding of the structure-property relationship in Dion–Jacobson perovskites and demonstrates that their exciton characteristics can be easily tuned through distortion of the crystalline lattice. Moreover, an explanation is offered for the double-peak emission frequently observed in these materials, whose nature is widely debated in the literature. To investigate this, size-controlled crystalline microwires are synthesised using a microfluidic-assisted synthesis technique and integrated them into a nanophotonic device to explore their behaviour in the strong coupling regime. The findings unambiguously demonstrate that such anomalous emission is related to polariton modes arising from strong light-matter interactions between the waveguided modes confined in perovskite microwires and perovskite excitons.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 21","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705307","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}

{"title":"Full-Spectrum Tunable and Handedness Invertible Geometric Phase Elements in Nanomotor-based Spiral Superstructures","authors":"Ching-Han Yang,&nbsp;Anup Kumar Sahoo,&nbsp;Yi-Chen Shen,&nbsp;Pei-Ru Song,&nbsp;Chia-Rong Lee","doi":"10.1002/adom.202500590","DOIUrl":"https://doi.org/10.1002/adom.202500590","url":null,"abstract":"<p>Photon-based communications can remarkably expand information capacity due to their multidimensional physical properties, including amplitude, polarization, wavelength, and angular momentum. To manipulate light's properties, traditional static/bulky optical elements such as lenses, waveplates, holograms rely on the propagation effect to control phase of light. Ultrathin, multifunctional optical elements driven by miniaturization and system integration in the production of photonic devices are urgently needed. This study employs a micropatterned photoalignment technology to fabricate a series of beam-shaping-related planar chiro-optical geometric phase elements (GPEs) based on nanomotor-based cholesteric liquid crystals (CLCs). When the incident light's wavelength falls within the photonic bandgap (PBG) of the CLCs, the reflected beam acquires a spatially distributed phase modulation determined by the micropatterned CLC directors on the element substrate. This phenomenon, associated with Pancharatnam–Berry geometric phase, enables full 2π phase control of light. Through the unique photoisomerization-induced chirality-reversal property of nanomotors, continuous, reversible full-spectrum PBG tuning and reversible switching of handedness can be achieved for each GPE. This work demonstrates both the design rule and experimental realization of advanced planar optical elements with advantages over traditional static/bulky devices. Importantly, it provides guidance for future efforts to achieve complete dimensional control of light in self-organizing nanomotor-based soft-matter devices.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 20","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606757","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}

{"title":"Alleviated Efficiency Roll-off in Organic Light-Emitting Diode through Optimizing Peripheral Substituents in Multiple-Resonance Thermally Activated Delayed Fluorescence Material","authors":"Xiaojuan Song,&nbsp;Xiaoning Li,&nbsp;Xiyun Ye,&nbsp;Yujun Xie,&nbsp;Yuewei Zhang,&nbsp;Lian Duan,&nbsp;Zhen Li","doi":"10.1002/adom.202500515","DOIUrl":"https://doi.org/10.1002/adom.202500515","url":null,"abstract":"<p>Multiple-resonance thermally activated delayed fluorescence (MR-TADF) emitters have shown great potential for ultrahigh-definition organic light-emitting diode (OLED), owing to their high emission efficiency and distinctive narrowband spectra. However, their electroluminescent performance often suffers from significant efficiency roll-off at high luminance due to the slow reverse intersystem crossing rate. Based on the prototypal MR skeleton, the integration of electron donor does not exhibit long-range charge transfer nature, which cannot achieve significant regulation in luminous properties. Herein, by grafting the electron acceptor, the MR-TADF emitter demonstrates hybridized transition characteristic of short-range and long-range charge transfer, leading to enhanced spin-orbit coupling and redshifted emission without spectral broadening. Consequently, the emitter exhibits pure green narrowband emission, featuring a high quantum yield of 88%. In OLED devices, it achieves a maximum external quantum efficiency (EQE) of 22.2%. Meanwhile, the phosphor sensitized devices show an EQE of 26.3% with minimal efficiency roll-off. Notably, they maintain EQE values at a top-tier level of 25.2%, 20.2%, and 18.0% at high luminance of 1000, 5000, and 10 000 cd m⁻², respectively. This work demonstrates the peripheral substituent's influence on luminous properties and presents a feasible approach to alleviate the efficiency roll-off issues for MR-TADF emitters in OLED.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551178","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}

{"title":"Electric Field Inhomogeneity in Colloidal QD-LEDs","authors":"Shreyas Srinivasan,&nbsp;Ruiqi Zhang,&nbsp;Mike Dillender,&nbsp;Thienan Nguyen,&nbsp;Madeleine Laitz,&nbsp;Taehyung Kim,&nbsp;Kwang-Hee Kim,&nbsp;Tae-Gon Kim,&nbsp;Moungi Bawendi,&nbsp;Vladimir Bulović","doi":"10.1002/adom.202500058","DOIUrl":"https://doi.org/10.1002/adom.202500058","url":null,"abstract":"<p>It is demonstrated that the electroluminescent layer in a colloidal quantum dot light emitting diode (QD-LED), formed by stochastic methods such as spin-coating, incorporates morphological thickness inhomogeneities, resulting in local electric field variations. These inhomogeneities can be directly visualized and quantified using confocal micro-photoluminescence (PL) and micro-electroluminescence (EL), as showed in QD-LEDs with stochastically processed InP/ZnSe/ZnS colloidal quantum dots (QDs). Around 5% of the device shows EL darkspots under forward bias and PL hotspots under photoexcitation, with a strong spatial correlation between these features. The PL hotspots (EL darkspots) correspond to thicker regions in the stochastically-processed QD film. This thickness variation leads to two distinct QD sub-populations responding differently to optical excitation. Time and energy-resolved spectral diffusion measurements reveal that most excitons belong to a “more-mobile” sub-population with fast energy transfer and short, electric field-dependent lifetimes, while a smaller fraction belongs to a “less-mobile” sub-population with slower energy transfer and longer, electric field-independent lifetimes. The “less-mobile” excitons correlate with thicker QD regions. These findings shed light on the local electric field inhomogeneity in QD-LEDs, offering insights into device operation, possible degradation mechanisms, and strategies for developing stochastically-processed micro-QD-LEDs.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500058","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551176","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}