Advanced Optical Materials最新文献_第7页

Visible-Light-Driven Heteroaryl Azo Switches with High-Efficiency Photoisomerization for Advanced Photochromic Systems 先进光致变色系统中高效光异构化的可见光驱动杂芳基偶氮开关

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-25 DOI: 10.1002/adom.202503223

Shurui Lv, Yuang Zhang, Shufen Zhang, Bingtao Tang

引用次数: 0

Bicarbazole Derived High Triplet Energy P-type Host for Blue Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes 双卡巴唑衍生的蓝色热激活延迟荧光有机发光二极管高三重态能量p型宿主

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-25 DOI: 10.1002/adom.202503438

Chaeyeon Lee, Jangho Moon, Thilini Batagoda, Donghee Nam, Jun Yeob Lee

{"title":"Bicarbazole Derived High Triplet Energy P-type Host for Blue Thermally Activated Delayed Fluorescence Organic Light-Emitting Diodes","authors":"Chaeyeon Lee, Jangho Moon, Thilini Batagoda, Donghee Nam, Jun Yeob Lee","doi":"10.1002/adom.202503438","DOIUrl":"10.1002/adom.202503438","url":null,"abstract":"<div>\u0000 \u0000 In this study, we developed new p-type host materials based on a 9,9'-diphenyl-9H,9'H-3,3'-bicarbazole (BPCz) core by introducing bulky blocking groups at the 2-position of the BPCz core to control the intermolecular distance between host molecules. This structural modification induces steric hindrance, which suppresses intermolecular interactions and enables the material to maintain a high triplet energy. Two blocking groups, tetraphenylsilane and 9-phenyl-9H-carbazole (phenylcarbazole), are introduced into the BPCz backbone structure. The bulky blocking groups enable a high triplet energy of 2.74 eV in a solid film for triplet exciton harvesting of blue emitters. The device using a host with an ortho-connected phenylcarbazole on the BPCz core exhibits excellent device performance in blue thermally activated delayed fluorescence organic light-emitting diodes, achieving a low driving voltage of 5.0 V, a maximum external quantum efficiency of 28.6%, and minimized efficiency roll-off. This work first demonstrates that the BPCz can be used as a core structure of a high triplet energy host for blue thermally activated delayed fluorescence organic light-emitting diodes.\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147569101","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

Anisotropic Coherent Propagation of Sub-Terahertz Magnons in Altermagnetic α-Fe2O3 亚太赫兹磁振子在变磁α-Fe2O3中的各向异性相干传播

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-22 DOI: 10.1002/adom.202503604

Ziyang Li, Shanshan Hu, Hongtao Dai, Zhong Shi, Shaohai Chen, Yaowen Liu, Zongzhi Zhang

{"title":"Anisotropic Coherent Propagation of Sub-Terahertz Magnons in Altermagnetic α-Fe2O3","authors":"Ziyang Li, Shanshan Hu, Hongtao Dai, Zhong Shi, Shaohai Chen, Yaowen Liu, Zongzhi Zhang","doi":"10.1002/adom.202503604","DOIUrl":"https://doi.org/10.1002/adom.202503604","url":null,"abstract":"<div>\u0000 \u0000 Magnon-mediated spin transport in antiferromagnets (AFMs) holds great promise for energy-efficient and high-speed spintronic applications. However, the direction-dependent anisotropy of terahertz (THz)-frequency coherent spin wave propagation in AFMs remains elusive due to the lack of effective experimental approaches. The recent discovery of altermagnets (AMs), which combine antiferromagnetic spin order with ferromagnet-like strong magneto-optical responses, has emerged as a promising platform for exploring propagating THz coherent magnons. In this study, we employ femtosecond time-resolved magneto-optical spectroscopy to successfully excite and detect propagating sub-THz coherent exchange magnons in AM α-Fe2O3, demonstrating remarkable group velocities (17.31–24.43 km/s) and micrometer-scale propagation lengths. By selecting three samples with different crystallographic cut planes to tune the relative orientation between magnon wavevector and crystal axes, we identify crystal orientation-dependent characteristics in both group velocities and lifetimes, attributed to anisotropic exchange stiffness and magnon-magnon scattering, respectively. Furthermore, in combination with atomistic spin dynamics simulations, we reveal that the Dzyaloshinskii-Moriya torque could significantly enhance propagating magnon amplitudes at low potential curvature, while external magnetic fields provide effective control over their frequency and polarization. These findings not only elucidate the dynamics of ultrafast laser-driven coherent magnon propagation in AMs but also deliver valuable guidance for advancing next-generation magnonic devices.\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567963","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

Enhancing External Quantum Efficiency of Non-Doped Deep-Blue OLEDs by Optimizing Hybridized Local and Charge-Transfer States 通过优化杂化局域态和电荷转移态提高非掺杂深蓝oled的外量子效率

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-22 DOI: 10.1002/adom.202503305

Mingke Li, Ling Lin, Yulong Li, Yichao Chen, Changhao Ruan, Hanlin Gan, Dezhi Yang, Yue Yu, Dongge Ma, Lei Ying

{"title":"Enhancing External Quantum Efficiency of Non-Doped Deep-Blue OLEDs by Optimizing Hybridized Local and Charge-Transfer States","authors":"Mingke Li, Ling Lin, Yulong Li, Yichao Chen, Changhao Ruan, Hanlin Gan, Dezhi Yang, Yue Yu, Dongge Ma, Lei Ying","doi":"10.1002/adom.202503305","DOIUrl":"https://doi.org/10.1002/adom.202503305","url":null,"abstract":"<div>\u0000 \u0000 Owing to the combination of high color purity of localized excited states and the benefits of inherent exciton utilization of charge-transfer states, hybridized local and charge-transfer (HLCT) states present significant potential for non-doped organic light-emitting diodes (OLEDs). However, it remains challenging to achieve efficient deep-blue HLCT emitters, since strong charge transfer (CT) character leads to red shifted emission. Herein we demonstrated that the intensity of CT state can be modulated through strategic incorporation of phenyl rings to regulate the spatial separation between building blocks. Detailed investigations revealed that the new emitter CPChN, which exhibits a moderately enhanced charge transfer contribution, undergoes an efficient high-lying reverse intersystem crossing process. This results in an external quantum efficiency exceeding 14% for a non-doped device with Commission Internationale de l'Éclairage (CIE) coordinates of (0.160, 0.043), which is one of the highest efficiencies achieved for non-doped OLEDs with the CIEy < 0.05. In contrast, the emitter CPPChN, which is predominantly characterized by local excited states, achieves a significantly lower efficiency of about 6%. This comparative analysis highlights that precise control of the charge transfer proportion in emitters with HLCT states represents a strategic approach for advancing the development of high-efficiency deep-blue OLEDs.\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567964","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

Ga-Doped SnO2 Electron Transport Layer with Tunable Mobility and Conductivity for High-Performance Inverted Quantum Dot Light-Emitting Diodes 高性能倒量子点发光二极管中具有可调迁移率和电导率的ga掺杂SnO2电子传输层

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-25 DOI: 10.1002/adom.202502968

Chen Lin, Mengxin Liu, Yuhui Liu, Xin Su, Xinan Shi, Daocheng Pan

{"title":"Ga-Doped SnO2 Electron Transport Layer with Tunable Mobility and Conductivity for High-Performance Inverted Quantum Dot Light-Emitting Diodes","authors":"Chen Lin, Mengxin Liu, Yuhui Liu, Xin Su, Xinan Shi, Daocheng Pan","doi":"10.1002/adom.202502968","DOIUrl":"10.1002/adom.202502968","url":null,"abstract":"<div>\u0000 \u0000 Quantum-sized SnO2 nanoparticles have been widely employed as electron transport layer (ETL) in high-efficiency quantum dot light-emitting diodes (QLEDs) owing to their attractive properties, such as high stability, wide bandgap, and excellent optical transparency. However, the device performance of SnO2-based QLEDs is still significantly lower to those of ZnO-based devices, suggesting considerable room for improvement. Here, we demonstrate the use of Ga-doped SnO2 nanoparticles with tunable mobility and conductivity for constructing high-performance SnO2-based QLEDs. The influences of Ga-doping concentration on the mobility and conductivity of SnO2 nanoparticles are systematically investigated. The mobility and conductivity of Ga-doped SnO2 nanocrystals can be tuned over two orders of magnitude by varying Ga-doping level. This p-type doping strategy effectively suppresses excessive electron transport in the SnO2 nanocrystals, thereby promoting more balanced charge injection within the QLED structure. As a result, red-emitting inverted QLEDs incorporating 3.5 at% Ga-doped SnO2 nanocrystals achieve an average external quantum efficiency (EQE) of 17.36% and a peak EQE of 20.04%. These results suggest that Ga-doped SnO2 nanocrystals are excellent candidates for the fabrication of high-performance QLEDs.\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147568823","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

Ultra-Durable Information-Encoded Anti-Counterfeiting Self-Assembled Nanocrystal Labels (Advanced Optical Materials 11/2026) 超耐用的信息编码防伪自组装纳米晶体标签（Advanced Optical Materials 11/2026）

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 DOI: 10.1002/adom.70988

Taha Haddadifam, Farzan Shabani, Mustafa Kalay, Aisan Khaligh, Evren Mutlugun, Mustafa Serdar Onses, Hilmi Volkan Demir

引用次数: 0

Aligned Single-Walled Carbon Nanotubes Film Chiral Metasurfaces for Terahertz Polarization Sensing 用于太赫兹偏振传感的定向单壁碳纳米管膜手性超表面

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2025-12-30 DOI: 10.1002/adom.202501993

Xiangdong Chen, Yue Wang, Xiang Zhang, Peng Shen, Fei Fan, Shengjiang Chang

{"title":"Aligned Single-Walled Carbon Nanotubes Film Chiral Metasurfaces for Terahertz Polarization Sensing","authors":"Xiangdong Chen, Yue Wang, Xiang Zhang, Peng Shen, Fei Fan, Shengjiang Chang","doi":"10.1002/adom.202501993","DOIUrl":"10.1002/adom.202501993","url":null,"abstract":"Single-wall carbon nanotube (SWCNT)-based metasurface biosensors have demonstrated great potential for ultra-sensitive, rapid-response, and trace-level biomarker detection. However, challenges such as complex functionalization procedures and the inability to precisely distinguish chiral enantiomers remain. Meanwhile, existing chiral metasurface sensors also suffer from high costs, complex fabrication processes, and long production cycles due to the introduction of asymmetric structures. Here, a novel chiral metasurface is proposed based on aligned SWCNT films, constructed on wafer-scale, highly oriented films prepared via a groove-assisted vacuum filtration method. In contrast to conventional chiral metasurfaces that rely on asymmetric geometries to achieve chirality, this new metasurface design exploits the intrinsic anisotropic response of aligned SWCNT films in combination with a simple symmetric resonant structure to generate a pronounced chiral effect without the need for deliberately chiral patterns. This metasurface enables both qualitative and quantitative polarization-based sensing of lactic acid (LA) enantiomers, achieving an excellent sensitivity of 20.7° mL g−1. Compared with conventional reflection/absorption spectroscopy-based sensing methods, this approach enables a more intuitive and comprehensive observation of the intrinsic chiral properties of the analyte. The results provide a new and promising strategy for optical field manipulation and enantiomer sensing based on chiral metasurfaces.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330583","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

Anisotropic Coherent Propagation of Sub-Terahertz Magnons in Altermagnetic α-Fe2O3 亚太赫兹磁振子在变磁α-Fe2O3中的各向异性相干传播

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-22 DOI: 10.1002/adom.202503604

Ziyang Li, Shanshan Hu, Hongtao Dai, Zhong Shi, Shaohai Chen, Yaowen Liu, Zongzhi Zhang

{"title":"Anisotropic Coherent Propagation of Sub-Terahertz Magnons in Altermagnetic α-Fe2O3","authors":"Ziyang Li, Shanshan Hu, Hongtao Dai, Zhong Shi, Shaohai Chen, Yaowen Liu, Zongzhi Zhang","doi":"10.1002/adom.202503604","DOIUrl":"10.1002/adom.202503604","url":null,"abstract":"<div>\u0000 \u0000 Magnon-mediated spin transport in antiferromagnets (AFMs) holds great promise for energy-efficient and high-speed spintronic applications. However, the direction-dependent anisotropy of terahertz (THz)-frequency coherent spin wave propagation in AFMs remains elusive due to the lack of effective experimental approaches. The recent discovery of altermagnets (AMs), which combine antiferromagnetic spin order with ferromagnet-like strong magneto-optical responses, has emerged as a promising platform for exploring propagating THz coherent magnons. In this study, we employ femtosecond time-resolved magneto-optical spectroscopy to successfully excite and detect propagating sub-THz coherent exchange magnons in AM α-Fe2O3, demonstrating remarkable group velocities (17.31–24.43 km/s) and micrometer-scale propagation lengths. By selecting three samples with different crystallographic cut planes to tune the relative orientation between magnon wavevector and crystal axes, we identify crystal orientation-dependent characteristics in both group velocities and lifetimes, attributed to anisotropic exchange stiffness and magnon-magnon scattering, respectively. Furthermore, in combination with atomistic spin dynamics simulations, we reveal that the Dzyaloshinskii-Moriya torque could significantly enhance propagating magnon amplitudes at low potential curvature, while external magnetic fields provide effective control over their frequency and polarization. These findings not only elucidate the dynamics of ultrafast laser-driven coherent magnon propagation in AMs but also deliver valuable guidance for advancing next-generation magnonic devices.\u0000 </div>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147567959","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

Ultra-Durable Information-Encoded Anti-Counterfeiting Self-Assembled Nanocrystal Labels 超耐用的信息编码防伪自组装纳米晶体标签

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2025-11-28 DOI: 10.1002/adom.202502884

Taha Haddadifam, Farzan Shabani, Mustafa Kalay, Aisan Khaligh, Evren Mutlugun, Mustafa Serdar Onses, Hilmi Volkan Demir

{"title":"Ultra-Durable Information-Encoded Anti-Counterfeiting Self-Assembled Nanocrystal Labels","authors":"Taha Haddadifam, Farzan Shabani, Mustafa Kalay, Aisan Khaligh, Evren Mutlugun, Mustafa Serdar Onses, Hilmi Volkan Demir","doi":"10.1002/adom.202502884","DOIUrl":"10.1002/adom.202502884","url":null,"abstract":"Forgery, a serious universal problem, is causing huge economic losses every year. Against forgery, information-encoded labelling systems have attracted significant attention for a diverse range of anti-counterfeiting applications. Here, cost-effective and ultra-durable nanocrystal-based labels are proposed and demonstrated in which information can be encoded as physically unclonable functions (PUFs) of hardware-oriented security systems. The fabrication method of the PUFs is based on the self-assembly of colloidal quantum wells (CQWs) and generation of unclonable features within their pattern at a liquid–liquid interface. These CQW PUFs are analyzed with well-known statistical tests, which show a uniqueness level of 0.5060 ± 0.0323 and prove their randomness. In addition, a feature-matching algorithm is used to authenticate these information-encoded CQW PUFs. For the safety of the semiconductor chips, a CQW PUF is attached to the surface of the chip to protect against hardware cyber-attacks. Eventually, fabricated labels are examined against high temperatures and moisture environments. The fabricated CQW label is durable for a period of 150 days it is tested, demonstrating ultra-high stability of the label. High stability and durability, cost-effectiveness, and high encoding capacity make these proposed nanocrystal labels extremely attractive for large-scale commercialization.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"14 11","pages":""},"PeriodicalIF":7.2,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202502884","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147570053","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

Visible-Light-Driven Heteroaryl Azo Switches with High-Efficiency Photoisomerization for Advanced Photochromic Systems 先进光致变色系统中高效光异构化的可见光驱动杂芳基偶氮开关

IF 7.2 2区材料科学

Advanced Optical Materials Pub Date : 2026-03-20 Epub Date: 2026-02-25 DOI: 10.1002/adom.202503223

Shurui Lv, Yuang Zhang, Shufen Zhang, Bingtao Tang

引用次数: 0