Advanced Optical Materials最新文献_第7页

Preparation of Tunable Multicolor Persistent Room Temperature Phosphorescence Materials by Doping Cellulose Nanocrystals with Aromatic Carboxylic Acids 芳香族羧酸掺杂纤维素纳米晶制备可调多色室温持久性磷光材料

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-21 DOI: 10.1002/adom.202500383

Qing Zhou, Feng Jin, Man Liu, Xiangxi Zhang, Qi Li, Lei Yang

{"title":"Preparation of Tunable Multicolor Persistent Room Temperature Phosphorescence Materials by Doping Cellulose Nanocrystals with Aromatic Carboxylic Acids","authors":"Qing Zhou, Feng Jin, Man Liu, Xiangxi Zhang, Qi Li, Lei Yang","doi":"10.1002/adom.202500383","DOIUrl":"https://doi.org/10.1002/adom.202500383","url":null,"abstract":"Persistent organic room temperature phosphorescence (p-RTP) luminescent materials have broad application prospects in multiple anti-counterfeiting encryption and other fields. It is generally difficult for single component substances to achieve adjustable full color gamut p-RTP afterglow, and dual component doping may be a feasible solution. Here, by doping a small amount of aromatic acid molecules with controllable conjugation into cellulose nanocrystals (CNC), which can generate various interactions, and full color gamut long afterglow emitting luminescent material with blue to red light is successfully prepared under the same excitation. Not only does it achieve adjustable afterglow color, but it also has long afterglow emission (447.02 ms). The high crystallinity of CNC and its strong hydrogen bonding with doped molecules endow aromatic acid molecules with a liquid nitrogen like environment, resulting in a multi-color afterglow under strong conformational hardening. The frontline orbit theory calculation also proves the above speculation. This simple method for preparing powder materials with all color gamut adjustable p-RTP emission has proven to have great commercial prospects in the field of multiple anti-counterfeiting encryption.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 18","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144492635","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

Spin-Orbit Photonics with Potato Starch Lenses 马铃薯淀粉透镜自旋轨道光子学

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-21 DOI: 10.1002/adom.202500684

Petr Bouchal, Petr Viewegh, Petr Liška, Radim Chmelík, Zdeněk Bouchal

{"title":"Spin-Orbit Photonics with Potato Starch Lenses","authors":"Petr Bouchal, Petr Viewegh, Petr Liška, Radim Chmelík, Zdeněk Bouchal","doi":"10.1002/adom.202500684","DOIUrl":"https://doi.org/10.1002/adom.202500684","url":null,"abstract":"Advanced flat optics based on metasurfaces or liquid crystals control the dynamic and geometric (Pancharatnam-Berry) phases of light through in-plane variations of refractive index and birefringence. This study introduces spherulites, structures inherent to starch and other polycrystalline materials, as unique volume optical elements that modulate the dynamic phase through changes in the geometric path of rays, while simultaneously controlling the geometric phase via 3D variations in anisotropy. The shape-dependent dynamic phase focuses light, while the geometric phase, resulting from the structural radial anisotropy, generates optical vortices, converting light's spin into orbital angular momentum. This phase interplay establishes spherulite-based spin-orbit photonics. After the challenging holographic verification of both phases, starch spherulites extracted from potato tubers are demonstrated as standard and vortex microlenses, with their operation controlled by light polarization. The suitability of spherulites for light sensing is demonstrated by measuring vortex topological charges and fully reconstructing any Poincaré sphere polarization state of incident light from the spherulite's focal intensity spot. A vectorial Shack-Hartmann experiment with starch spherulites showcases this novel polarimetric sensing alongside wavefront measurement. By transferring the discovered properties of spherulites to artificial metamaterials, new polarization lenses, on-chip vortex detectors, and polarization-sensitive wavefront sensors can be developed.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 21","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500684","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705596","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

Formation of Anisotropic Polarons in Antimony Selenide 硒化锑中各向异性极化子的形成

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-21 DOI: 10.1002/adom.202403141

Yijie Shi, Xi Wang, Zhong Wang, Zheng Zhang, Fuyong Hua, Chao Chen, Chunlong Hu, Jiang Tang, Wenxi Liang

{"title":"Formation of Anisotropic Polarons in Antimony Selenide","authors":"Yijie Shi, Xi Wang, Zhong Wang, Zheng Zhang, Fuyong Hua, Chao Chen, Chunlong Hu, Jiang Tang, Wenxi Liang","doi":"10.1002/adom.202403141","DOIUrl":"https://doi.org/10.1002/adom.202403141","url":null,"abstract":"Antimony selenide (Sb2Se3) is an attractive candidate for photovoltaics with not yet satisfying efficiency. Beside defects, the polaron formation originated from lattice distortion was proposed to account for the free-carrier trapping and the subsequent carrier dynamics and optoelectronic properties. However, such a mechanism is still lack of the information of structural responses. Here, the evolution pathways of carrier and lattice after photoexcitation are tracked through the pump-probe methods of optical absorption and electron diffraction, which reveal the temporal correlations between the dynamics of both degrees of freedom. Opposite separation changes of atom pairs in the (Sb4Se6)n ribbons are observed within a few picoseconds then followed by the structural distortions induced intermediate state, which last several tens of picoseconds, coinciding with the optical phonon population and the trapping process of carriers, respectively. Together with the analysis of electron diffuse scattering modulated by the Gaussian atomic displacement fields of polaron model, the picture of formation of anisotropic polarons with large size is constructed. The findings reported in this work provide the direct information of carrier and structure for elucidating the polaron scenario in Sb2Se3, and probably in other novel optoelectronic materials with anisotropic structure and soft lattice.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 16","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232378","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

Breaking Crystallinity for Optimal Dark Current: Nonfullerene Acceptor Dilution as a Strategy for High-Performance Organic Photodetectors 打破结晶度的最佳暗电流：非富勒烯受体稀释作为高性能有机光电探测器的策略

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-21 DOI: 10.1002/adom.202500255

Chiara Labanti, Ying Sun, Joel Luke, Yifan Dong, Song Yi Park, Yi-Chun Chin, Tianhao Lan, Emily J. Yang, Lei Zhang, Soranyel Gonzalez-Carrero, James R. Durrant, Ji-Seon Kim

{"title":"Breaking Crystallinity for Optimal Dark Current: Nonfullerene Acceptor Dilution as a Strategy for High-Performance Organic Photodetectors","authors":"Chiara Labanti, Ying Sun, Joel Luke, Yifan Dong, Song Yi Park, Yi-Chun Chin, Tianhao Lan, Emily J. Yang, Lei Zhang, Soranyel Gonzalez-Carrero, James R. Durrant, Ji-Seon Kim","doi":"10.1002/adom.202500255","DOIUrl":"https://doi.org/10.1002/adom.202500255","url":null,"abstract":"Organic photodetectors (OPDs) based on polymer donor:non-fullerene-acceptor (NFA) bulk heterojunction (BHJ) blends demonstrate great potential for light-sensing applications, thanks to optoelectronic tunability and strong absorption. However, state-of-the-art organic photoconversion devices lag behind silicon counterparts due to the laborious dark current, Jd, and photodetection speed optimization required in OPDs. Herein, the donor/acceptor blend ratio is controlled to optimize PM6:Y6-based OPDs, with diluted Y6 blends (1:0.1 D/A weight ratio) strongly suppressing Jd to 6.5 × 10−9 A cm−2 (−4 V). Diluted OPDs exhibit faster photoresponse and poor short-circuit photocurrent generation is dramatically improved under reverse bias. In-depth photophysical and energetic analysis reveal the origin of high performance. In diluted blends, dissociation of emissive strongly bound excitonic charge-transfer states within Y6 require electric field assistance, while the polymer matrix provides a continuous charge-transport pathway. The generality of this strategy is tested with various NFAs, with NFA dilution being most effective for highly crystalline acceptors. It is determined that the reduction in dark current is predominantly driven by disruption of NFA crystallinity and intermolecular interactions. Polymer-rich BHJ devices, therefore, provide an effective optimization method for reducing dark current in OPDs and are highly promising for industrial scalability due to facile processability, robust mechanical properties, and superior thermal stability.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 19","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500255","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144551278","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

Nanoscale Bulk-Heterojunction Channel-Enabled Self-Powered Broadband Lateral Photodetectors for Efficient Weak Light Detection 用于高效弱光探测的纳米体积异质结通道自供电宽带横向光电探测器

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-21 DOI: 10.1002/adom.202500664

Akshaykumar Dipchand Salunke, Santanu Pradhan

{"title":"Nanoscale Bulk-Heterojunction Channel-Enabled Self-Powered Broadband Lateral Photodetectors for Efficient Weak Light Detection","authors":"Akshaykumar Dipchand Salunke, Santanu Pradhan","doi":"10.1002/adom.202500664","DOIUrl":"https://doi.org/10.1002/adom.202500664","url":null,"abstract":"This work demonstrates a novel technique of fabricating lateral self-powered broadband photodetectors, spanning from visible to near-infrared regions, using a mixed nanoscale ensemble of lead sulfide (PbS) colloidal quantum dots (CQDs) and cesium lead bromide (CsPbBr3) nanocrystals (NCs). CsPbBr3 NCs are used to obtain two front benefits. First, they are efficient surface passivators due to their excellent lattice matching with the desired PbS CQDs surface lattice facets. Second, they form an ideal heterojunction with PbS CQDs to generate a built-in potential in the ensemble through the difference between electron and hole quasi-Fermi levels. These effects combined to result in efficient self-powered lateral photodetectors. The synergistic optimization of the ligand exchange process and interface engineering leads to a nearly five-fold increment in charge carrier mobility and a four-fold decrement in trap density. Overall, nano bulk heterojunction devices exhibit a one-order improvement in responsivity and detectivity over the pristine PbS devices. The nano bulk heterojunction-based lateral photodetectors also demonstrate efficient low-intensity photodetection in prototype medical sensing applications.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 21","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144705586","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

Synthesis of Cu─In─S Quantum Dots Through Precursor Activity Optimization for High-Performance Near-Infrared Light Emitting Diodes 基于高性能近红外发光二极管前驱体活性优化的Cu─In─S量子点合成

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-20 DOI: 10.1002/adom.202500181

Yuanyuan Xiao, Zhiheng Cheng, Jingjing Xu, Zongzhe Li, Jiaming Xie, Shujuan Liu, Baofeng Zhao, Yun Yu, Tianrong Zhu, Qingliang You, Biao Xiao, Renqiang Yang

{"title":"Synthesis of Cu─In─S Quantum Dots Through Precursor Activity Optimization for High-Performance Near-Infrared Light Emitting Diodes","authors":"Yuanyuan Xiao, Zhiheng Cheng, Jingjing Xu, Zongzhe Li, Jiaming Xie, Shujuan Liu, Baofeng Zhao, Yun Yu, Tianrong Zhu, Qingliang You, Biao Xiao, Renqiang Yang","doi":"10.1002/adom.202500181","DOIUrl":"https://doi.org/10.1002/adom.202500181","url":null,"abstract":"Near-infrared quantum dot light-emitting diodes (NIR-QLEDs) hold great promise for optoelectronic applications. However, their low luminous efficacy and poor stability restrict their practical use. This study addresses these challenges by synthesizing environment-friendly Cu─In─S (CIS) quantum dots (QDs) using diisopentyl sulfide to enhance the reactivity of the In precursor. The resulting QDs produce a photoluminescence quantum yield (PLQY) of 40.0%. High-quality QDs are obtained by coating with a ZnS shell, resulting in a PLQY of 93.3%. Photoluminescence analysis reveals that the luminescence mechanism is predominantly governed by donor–acceptor pair recombination. The incorporation of VOC2O4 as a hole injection layer into NIR-QLEDs prepared from the QDs enhances hole injection and reduces efficiency roll-off, leading to a peak external quantum efficiency of 17.6%, the highest reported for NIR-QLEDs with emissions exceeding 800 nm. Impedance spectroscopy confirms improved charge injection and transport characteristics. This work underscores the critical role of material synthesis and device architecture in optimizing the performance of NIR-QLEDs for practical applications.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 17","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144300266","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

Implementing High-Throughput Screening of Organic Solar Cells using Transfer Learning Based on Fine-Tuning Neural Network Strategy 基于微调神经网络策略的迁移学习实现有机太阳能电池的高通量筛选

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-19 DOI: 10.1002/adom.202402405

Zijing Lu, Cunbin An, Xuefeng Liu, Zhe Mei, Xinyuan Xie, Kun Li, Yishi Wu, Qing Liao, Hongbing Fu

{"title":"Implementing High-Throughput Screening of Organic Solar Cells using Transfer Learning Based on Fine-Tuning Neural Network Strategy","authors":"Zijing Lu, Cunbin An, Xuefeng Liu, Zhe Mei, Xinyuan Xie, Kun Li, Yishi Wu, Qing Liao, Hongbing Fu","doi":"10.1002/adom.202402405","DOIUrl":"https://doi.org/10.1002/adom.202402405","url":null,"abstract":"In organic solar cells (OSCs), traditional ensemble learning models have advanced the development of photovoltaic materials, reducing the reliance on labor-intensive trial-and-error methods. However, these models suffer from insufficient generalization and poor transferability, leading to low accuracy in predicting power conversion efficiency (PCE) for new materials. In this work, a transferable neural network-based framework is established to predict PCEs of binary OSCs. Specifically, 1431 sets of donor (excluding PM6):acceptor data are collected to train and validate four ensemble learning models and a transferable neural network model. These models achieved Pearson correlation coefficients (r) ranging from 0.75 to 0.84. Subsequently, a new dataset containing 113 sets of PM6:acceptor pairs is used to test their generalization abilities. The ensemble learning models exhibited significantly decreased r of 0.55–0.60, whereas the transferable neural network model maintained r above 0.80. Additionally, two electron acceptors differing only in their alkyl chain branching points are synthesized. The ensemble learning models predicted the similar PCEs for both acceptors. Conversely, the transferable neural network model predicted their significantly different PCEs, consistent with experimental results. This work demonstrates that the developed predictive framework offers substantial advantages in accurately predicting PCEs for new photovoltaic materials.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 16","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232366","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

Multiscale Physics-Informed Neural Networks for the Inverse Design of Hyperuniform Optical Materials 用于超均匀光学材料反设计的多尺度物理信息神经网络

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-19 DOI: 10.1002/adom.202403304

Roberto Riganti, Yilin Zhu, Wei Cai, Salvatore Torquato, Luca Dal Negro

{"title":"Multiscale Physics-Informed Neural Networks for the Inverse Design of Hyperuniform Optical Materials","authors":"Roberto Riganti, Yilin Zhu, Wei Cai, Salvatore Torquato, Luca Dal Negro","doi":"10.1002/adom.202403304","DOIUrl":"https://doi.org/10.1002/adom.202403304","url":null,"abstract":"In this study, multiscale physics-informed neural networks (MscalePINNs) are employed for the inverse design of finite-size photonic materials with stealthy hyperuniform (SHU) disordered geometries. Specifically, MscalePINNs are shown to capture the fast spatial variations of complex fields scattered by arrays of dielectric nanocylinders arranged according to isotropic SHU point patterns, thus enabling a systematic methodology to inversely retrieve their effective dielectric profiles. This approach extends the recently developed high-frequency homogenization theory of hyperuniform media and retrieves more general permittivity profiles for applications-relevant finite-size SHU and optical systems, unveiling unique features related to their isotropic nature. In particular, the existence of a transparency region beyond the long-wavelength approximation is numerically corroborated, enabling the retrieval of effective and isotropic locally homogeneous media even without disorder-averaging, in contrast to the case of uncorrelated Poisson random patterns. The flexible multiscale network approach introduced here enables the efficient inverse design of more general effective media and finite-size optical metamaterials with isotropic electromagnetic responses beyond the limitations of traditional homogenization theories.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 16","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232367","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

Polarity Adaptive Carbon Dots: Photoluminescence in Heterogeneous Environments 极性自适应碳点：异质环境下的光致发光

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-19 DOI: 10.1002/adom.202403394

Xiaoqian Liu, Ning Feng, Xiaofeng Sun, Hongguang Li

{"title":"Polarity Adaptive Carbon Dots: Photoluminescence in Heterogeneous Environments","authors":"Xiaoqian Liu, Ning Feng, Xiaofeng Sun, Hongguang Li","doi":"10.1002/adom.202403394","DOIUrl":"https://doi.org/10.1002/adom.202403394","url":null,"abstract":"Carbon dots (CDs) dissolving in heterogeneous environments such as solvents with very different polarities, ionic liquids, and emulsion gels can greatly expand the application in numerous scenarios. However, currently reported amphiphilic CDs usually aggregate at low concentrations in heterogeneous environments (especially for water), which is detrimental to the luminescence of CDs due to aggregation-caused quenching (ACQ) effect. In this work, four types of “polarity adaptive carbon dots” (pad-CDs) that can dissolve in water, organic solvents, ionic liquids, and even emulsion gels are designed. The introduction of hydrophilic imidazole ionic liquids (ILs) provided abundant functional groups on the surface of CDs derived from phenylenediamine (PDA) isomers. Thus, the pad-CDs can maintain uniform dispersion over a wide concentration range even in water. Spectral analysis for pad-CDs in seven kinds of solvents shows that the surface dipole moment of pad-CDs changed and the intramolecular charge transfer (ICT) state is generated after excitation when pad-CDs adapted to the solvent polarity. Subsequently, heterogeneous environments with microscopic bicontinuous and microscopic phase separation are set up to observe the PL of pad-CDs. All selected pad-CDs adapted to heterogeneous environments, showing bright PL and modifying the corresponding environment simultaneously.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 16","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232368","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

Isomeric π-Extension Strategy Enables Efficient Copper(I) Emitters with High Electroluminescence Efficiency 同分异构体π扩展策略使高效铜(I)发射体具有高电致发光效率

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-05-19 DOI: 10.1002/adom.202500579

Ao Ying, Yuhan Ai, Xingyu Chen, He Zhang, Jianlong Xia, Shaolong Gong

{"title":"Isomeric π-Extension Strategy Enables Efficient Copper(I) Emitters with High Electroluminescence Efficiency","authors":"Ao Ying, Yuhan Ai, Xingyu Chen, He Zhang, Jianlong Xia, Shaolong Gong","doi":"10.1002/adom.202500579","DOIUrl":"https://doi.org/10.1002/adom.202500579","url":null,"abstract":"Luminescent copper(I) complexes are emerging as sustainable and cost-effective alternatives to conventional iridium(III) and platinum(II) phosphors in organic light-emitting diodes (OLEDs). However, achieving electroluminescence efficiencies comparable to those of noble metal-based emitters remains a formidable challenge. Here, an isomeric π-extension strategy is adopted to develop two new Cu(I) complexes, Cu-23BF and Cu-43BF, by precisely tuning the fusion site of a benzofuran subunit on a carbazole ligand within a carbene-metal-amide (CMA) motif. Compared to the prototype complex Cu-12BF, these new complexes exhibit more coplanar geometries, elongated molecular structures, and increased electron-hole separation in their excited states, resulting in near-unity photoluminescence quantum yields (up to 97%) and relatively high horizontal dipole ratios (up to 78%) in thin films. Notably, Cu-43BF delivers a short thermally activated delayed fluorescence lifetime of 0.65 µs and a fast radiative rate on the 106 s−1 order, attributed to its well-separated frontier molecular orbitals and favorable excited state ordering. As a result, the Cu-43BF-based OLED achieves a high external quantum efficiency of 29.4%, among the highest reported for Cu(I)-based OLEDs. This work not only provides a practical and effective strategy for designing highly efficient Cu(I) emitters but also highlights the future direction for Cu(I)-based OLEDs.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 20","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144606531","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