{"title":"Large Electrogyration Effect in Ferroaxial NiTiO3 at Near Infrared Wavelengths","authors":"Takeshi Hayashida, Koei Matsumoto, Tsuyoshi Kimura","doi":"10.1002/adom.202500364","DOIUrl":"https://doi.org/10.1002/adom.202500364","url":null,"abstract":"<p>The linear electrogyration effect refers to optical rotation induced in proportion to an applied electric field. In comparison with other optical phenomena related to optical rotation, such as natural optical activity and the Faraday effect, the linear electrogyration effect is much less investigated because of the small magnitude of the electric field-induced rotation. In this study, a microscopic mechanism of the linear electrogyration effect is discussed and it is demonstrated that the effect in a ferroaxial crystal NiTiO<sub>3</sub> can be significantly pronounced at near infrared wavelengths where the magnetic dipole transitions are strong. Furthermore, it is shown that the effect is amplified in an artificial laminated structure in which the front and back sides of the ferroaxial crystal are laminated alternately with electrodes in between. It is expected this work stimulates further studies on electrogyration and its potential applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 18","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500364","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492777","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}
Dominika Przybylska, Kevin Soler-Carracedo, Anna Ekner-Grzyb, Natalia Jurga, Marjanossadat Hosseinifard
{"title":"Long-Term Study of Optical Nanoparticles Doped With Yb3+/Er3+ and Transition Metal Ions and their Real Application for Imaging and Temperature Sensing on Triticum Aestivum L.","authors":"Dominika Przybylska, Kevin Soler-Carracedo, Anna Ekner-Grzyb, Natalia Jurga, Marjanossadat Hosseinifard","doi":"10.1002/adom.202500432","DOIUrl":"https://doi.org/10.1002/adom.202500432","url":null,"abstract":"<p>Upconverting nanoparticles (UCNPs) have incredible potential for countless applications, especially in biology and medicine. These NPs can be used to bioimaging animals and plants and analyze their physiology, metabolic pathways, or intercellular interactions in real-time. However, before reaching such an application, the UCNPs physicochemical properties during prolonged storage and their toxicity to a particular species must be studied. Herein, SrF<sub>2</sub>:Yb<sup>3+</sup>, Er<sup>3+</sup> water colloid, additionally doped with transition metals (Sc<sup>3+</sup> or Zn<sup>2+</sup>) to enhance observed emission, are tested during 22 weeks of storage in ambient conditions. The obtained compounds presented high stability throughout the entire duration of the experiment, with minor changes in their composition, emission intensity, and thermal sensitivity. After carefully investigating the phytotoxicity of UCNPs on wheat <i>Triticum aestivum</i> L., UC emission plant imaging is successfully observed under 975 nm excitation while overcoming laser heating that can harm the plant. The UC emission from the UCNPs in the plant is also calibrated to monitor temperature. Moreover, it is discovered that SrF<sub>2</sub>:Yb<sup>3+</sup>, Er<sup>3+</sup>, Zn<sup>2+</sup> can positively influence wheat growth. These results indicate that presented UCNPs are among the most promising candidates for biological and agriculture studies and applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 18","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500432","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492839","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}
Xiao-Sheng Zhong, Jia-Qi Xi, Jia-Jun Hu, Li Yuan, You-Xuan Zheng
{"title":"Fluorophore-Bridge-Fluorophore Architecture for Efficient Narrowband Pure Green Electroluminescence","authors":"Xiao-Sheng Zhong, Jia-Qi Xi, Jia-Jun Hu, Li Yuan, You-Xuan Zheng","doi":"10.1002/adom.202500395","DOIUrl":"https://doi.org/10.1002/adom.202500395","url":null,"abstract":"<p>Developing narrowband multiple resonance thermally activated delayed fluorescence (MR-TADF) materials for concentration-independent organic light-emitting diodes (OLEDs) with high efficiency and color purity is still a challenge. Herein, a fluorophore-bridge-fluorophore architecture is developed, resulting in two MR-TADF materials (BNCz-n-POABNCz and POABNCz-n-POABNCz) by “face-to-face” arrangement of BNCz (based on carbazole unit) and POABNCz (based on carbazole and phenoxazine groups) cores sterically on the naphthalene bridge. Two materials show green emissions peaking at 501/516 nm with full-width at half-maximum values of 30/33 nm in toluene and photoluminescence quantum yields of 94%/87% in doped films, respectively. Remarkably, the POABNCz-n-POABNCz exhibits high color purity with Commission Internationale de L'Eclairage coordinates of (0.19, 0.71), reaching the National Television System Committee standard for pure green emission. Furthermore, the OLEDs D1 and D2 composing BNCz-n-POABNCz and POABNCz-n-POABNCz illustrate maximum external quantum efficiencies (EQE<sub>max</sub>) of 32.0% and 33.6%, respectively. Even at a doping ratio of 20 wt%, D2 still remains an EQE<sub>max</sub> ≈28.5%.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 18","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492802","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}
Heng Yang, Sizhe Chen, Yi Liu, Qian Zhao, Fangchao Lu, Fengrui Hu, Jing Zhang, Xiaolong Liu
{"title":"Optoelectrical Performance Enhancement by Integrating CsPbI3 Quantum Dots Layer with Bi2O2Se/Si Photodiodes","authors":"Heng Yang, Sizhe Chen, Yi Liu, Qian Zhao, Fangchao Lu, Fengrui Hu, Jing Zhang, Xiaolong Liu","doi":"10.1002/adom.202403355","DOIUrl":"https://doi.org/10.1002/adom.202403355","url":null,"abstract":"<p>Benefiting from the versatile energy band structure design of 2D materials and effective modulation of dopant concentration in Si, 2D/Si hybrid heterostructures demonstrate desirable device performances. Bismuth oxychalcogenide material Bi<sub>2</sub>O<sub>2</sub>Se, exhibits high carrier mobility and ultrafast optoelectrical dynamics, when interfaced with Si, the device efficiencies will be improved in the aspects of photo-induced carrier separation and collection. However, due to the indirect bandgap features of Bi<sub>2</sub>O<sub>2</sub>Se and Si, the light absorption of the heterostructure is unsatisfactory, deteriorating the external quantum efficiency. To address this, additional light absorption enhancing materials (LAEMs) are incorporated, and boosted with the photo-gating effects generated from the residual carriers within the LAEMs, and photoconductive gain and photoresponsivity are improved at the cost of response speed. In this study, the CsPbI<sub>3</sub> quantum dot layer is adopted to provide excess carriers, which are injected into Bi<sub>2</sub>O<sub>2</sub>Se/p-Si heterojunction in the form of excitonic energy transfer. The carrier multiplication effect is thus circumvented, leading to an improved photoresponsivity as high as 2078 A W<sup>−1</sup>, while specific time constants of the rising and falling edges of photocurrent are accelerated to 267 and 391 µs.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 15","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148467","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}
Zibo Gao, Zhengzhi Jiang, Qiyu Liang, Ruihua He, Van Cuong Mai, Yingwei Tang, Qirong Xiong, Wenting Zhao, Hongwei Duan, Hongliang Sun, Mo Li, Yansong Miao, Weibo Gao
{"title":"Quantum Sensing of Lanthandie Binding Tags with Relaxometer of NV Center in Diamond","authors":"Zibo Gao, Zhengzhi Jiang, Qiyu Liang, Ruihua He, Van Cuong Mai, Yingwei Tang, Qirong Xiong, Wenting Zhao, Hongwei Duan, Hongliang Sun, Mo Li, Yansong Miao, Weibo Gao","doi":"10.1002/adom.202500308","DOIUrl":"https://doi.org/10.1002/adom.202500308","url":null,"abstract":"<p>Lanthanide binding tags (LBTs) stand out as a prominent group of fluorescent probes that are extensively utilized in biological detection. However, research on LBTs has predominantly emphasized their fluorescence properties, which frequently compromised by background fluorescence noise. Investigating magnetic properties could optimize detection methodologies that offer enhanced sensitivity and specificity. This study measures the response of a relaxometer based on ensemble nitrogen-vacancy (NV) centers in diamond to various amounts of LBTs with gadolinium ions, determining the detection limit of LBTs to be 25 fmol. A detection scheme employing the NV relaxometer to detect specific binding between LBTs and target is then proposed and demonstrated. Specifically, the study assesses the relaxometer's response to various concentrations of the interaction between the modified LBTs and Receptor-Binding Domain (RBD) of SARS-COVID-2 spike protein, with the detection threshold reaching ≈2 pmol. The research provides a potential application platform for biomarker detection under picomole concentration by using NV centers to detect the magnetism of LBTs.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 18","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492801","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}
Hang Yin, Hao Wang, Fei Fan, Pengxuan Li, Huijun Zhao, Yunyun Ji, Jierong Cheng, Shengjiang Chang
{"title":"Rotatable Terahertz Vortex Field Based on Magneto-Optical Metasurface","authors":"Hang Yin, Hao Wang, Fei Fan, Pengxuan Li, Huijun Zhao, Yunyun Ji, Jierong Cheng, Shengjiang Chang","doi":"10.1002/adom.202500088","DOIUrl":"https://doi.org/10.1002/adom.202500088","url":null,"abstract":"<p>Terahertz vortex fields hold immense potential for wideband, high-capacity wireless communication. However, existing functional devices face challenges such as the lack of multi-channel multiplexing and active control capabilities. Here, a magneto-optical dielectric spiral metasurface that enables the generation and active rotation of vortex fields with different functionalities is proposed: within the frequency band of a completely orthogonal polarization conversion, the vortex beams excited by the two spin photonic states exhibit distinct topological charges with the mode purity of over 80% and focusing characteristics with spatial separation between them. In addition, within the frequency band of half orthogonal polarization conversion, a spiral field distribution can be obtained resulting from interference between the conversion and the direct-through components. By adjusting the magnetic field, the device allows dynamic, nonreciprocal rotation of both local polarization states and vortex fields. The rotation angle is determined by magnetization and topological charge with a maximum rotation of up to 180°. The magneto-optical light field manipulation mechanism offers promising applications in high-capacity communications, information encryption, and particle manipulation.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 16","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232187","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}
Junyan Li, Hao Lei, Kanghong Wang, Xianyao Li, Zhuo Chen, Sang Lam, Xin Tu, Ka Lok Man, Chun Zhao
{"title":"Quantum Dot-Enhanced Dual-Modality Heterojunction Optoelectronic Synapse for Neuromorphic Computing (Advanced Optical Materials 13/2025)","authors":"Junyan Li, Hao Lei, Kanghong Wang, Xianyao Li, Zhuo Chen, Sang Lam, Xin Tu, Ka Lok Man, Chun Zhao","doi":"10.1002/adom.202570091","DOIUrl":"https://doi.org/10.1002/adom.202570091","url":null,"abstract":"<p><b>Artificial Vision Systems</b></p><p>The advancement of multi-modality optoelectronic sensing synaptic devices is crucial for the field of artificial vision systems. The advantages of optically sensitive CdSe/CdSe<sub>x</sub>S<sub>1−x</sub> quantum dots and In<sub>2</sub>O<sub>3</sub> semiconductor are well-incorporated into heterojunctions via low-cost fully solution-based process to endow synaptic transistors with dual-modality of lights and electricity. This strategic interdisciplinary sense integration is a potential avenue for high-efficiency information processing. More details can be found in article 2403474 by Ka Lok Man, Chun Zhao, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 13","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202570091","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905308","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":"Suppressed Trap Density and Reduced Energy Disorder for High-Performance Ultrathin Organic Near-Infrared Photodetectors","authors":"Xuewu Li, Jiawei Qiao, Mingxu Zhou, Xue Shi, Yufeng Ge, Zhen Fu, Xiaotao Hao","doi":"10.1002/adom.202403173","DOIUrl":"https://doi.org/10.1002/adom.202403173","url":null,"abstract":"<p>Ultrathin Organic Photodetectors (OPDs), renowned for their high miniaturization and energy efficiency, are increasingly integrated into everyday devices, including smartphones, tablet computers, and medical equipment. However, the inherent high trap density and energy disorder associated with organic materials (especially at ultrathin thickness) have posed significant challenges to their performance and efficiency. This study presents a strategy for controlling trap density and energy disorder of high-performance ultrathin near-infrared (NIR) OPDs by incorporating L8-BO into the active layer of PM6:BTP-eC9 blends. A notable increase in trap density is observed as the thickness decreases from 110 to 20 nm, which correlates with a diminished photoelectric response of ultrathin OPDs. The incorporation of L8-BO enhances the crystallinity of the blends, significantly suppressing the trap density and energy disorder. Additionally, the L8-BO strategic integration can mitigate exciton-phonon coupling and extend carrier recombination time. Subsequently, the optimized devices exhibit a responsivity exceeding 0.4 A W<sup>−1</sup> and an outstanding specific detectivity (2.30 × 10<sup>13</sup> Jones) at 850 nm, positioning them at the forefront of contemporary NIR photodetector technology. These advancements present a significant opportunity to enhance the performance of NIR OPDs, thereby facilitating their integration into the rapidly expanding field.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 15","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144148480","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}
Drake R. Austin, Brian Everhart, Michael Altvater, Arthur R. Woll, Christopher Muratore, Benjamin Robertson, Lirong Sun, Mario Hofmann, Michael E. McConney, Peter R. Stevenson, Nicholas R. Glavin
{"title":"Laser-Induced Crystallization and Oxidation Phase Diagrams for High-Throughput Evaluation of MoS2/MoOx Optical Thin Films","authors":"Drake R. Austin, Brian Everhart, Michael Altvater, Arthur R. Woll, Christopher Muratore, Benjamin Robertson, Lirong Sun, Mario Hofmann, Michael E. McConney, Peter R. Stevenson, Nicholas R. Glavin","doi":"10.1002/adom.202500190","DOIUrl":"https://doi.org/10.1002/adom.202500190","url":null,"abstract":"<p>The development of thin film materials for optoelectronic and meta-optic applications requires the discovery of novel materials and reliable control over their optical constants during the growth process. In this work, localized laser oxidation and crystallization are used to tailor the optical constants of an amorphous MoS<sub>2</sub> precursor thin film. By scanning focused laser light across multiple films with varying intensity and speed in a controlled oxygen environment, the transient heating associated with this technique is used to control the localized oxidation of each film. Characterization of the laser-processed regions results in synthesis phase diagrams indicating the laser conditions at which each oxide phase is formed. The optical constants of each phase are also measured, showing changes in refractive index Δ<i>n</i> and extinction coefficient Δ<i>k</i> as large as Δ<i>n</i> = 0.43 and Δ<i>k</i> = 0.35 for MoS<sub>2</sub>, Δ<i>n</i> = 1.7 and Δ<i>k</i> = 1.6 for MoO<sub>3</sub>, and Δ<i>n</i> = 1.7 and Δ<i>k</i>= 1.3 for MoO<sub>2</sub>. These changes are attributed to oxygen dopants, strain, improved crystallinity for MoS<sub>2</sub>, and oxygen vacancies and sulfur dopants for the oxide phases. These findings demonstrate the versatility of the laser processing approach for the highly controlled tailoring of thin film optical properties for high-throughput materials discovery.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 17","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144299710","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":"Elucidating and Biomimicking the Coloration Mechanisms Responsible for the Vibrant Blue Hues of the Common Kingfisher (Advanced Optical Materials 13/2025)","authors":"Jihun Kang, Seunghwan Moon, Deok-Jin Jeon, Seungmuk Ji, Eunok Lee, Jong-Souk Yeo","doi":"10.1002/adom.202570089","DOIUrl":"https://doi.org/10.1002/adom.202570089","url":null,"abstract":"<p><b>Coloration Mechanisms of Kingfisher Feathers</b></p><p>This image illustrates the coloration mechanism of the kingfisher's back feathers. Keratin nanochannels within the feathers, responsible for blue structural colors, have quasi-ordered network structures. They produce dark blue, light blue, and cyan as the volume fraction of keratin increases while the pitch is constant. More details can be found in article 2402936 by Jong-Souk Yeo and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 13","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202570089","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143905309","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}