{"title":"Tuning Solid-State Emissions via Twists and Turns in Polymorphic Self- and Cross-Coupled Dianthrylethenes","authors":"Banchhanidhi Prusti, Shivani Tripathi, Pandiyan Sivasakthi, Pralok K. Samanta, Manab Chakravarty","doi":"10.1002/adom.202500985","DOIUrl":"https://doi.org/10.1002/adom.202500985","url":null,"abstract":"<p>Tuning solid-state fluorescence in organic materials enriches the fundamentals and practical utilities in the emerging field of optical technology. This report details the innovative synthesis of dianthrylethenes linked to pentylphenylaminophenyl (C5DPA) and 1,4-dimethoxyphenyl (1,4-DMP) as rotors, yielding vibrant, multicolor, highly intense solid-state emitters. Not only typically observed symmetrically substituted olefins, but a classic oxidative dephosphorylation reaction is also introduced herein to conveniently access both <i>unsymmetrically and</i> symmetrically <i>substituted olefins from the one-pot reaction</i>. The flexible C5DPA induces polymorphism in <b>DPAn2</b>, which fluoresces in distinct wavelengths from three discrete molecular packings, and is observed in <b>DPAn2-G</b>, <b>DPAn2-Y,</b> and <b>DPAn2-O</b> crystals. Contrarily, 1,4-DMP-linked rigid analog <b>DMAn2</b> does not exhibit such variation. Fluorescence switching among polymorphs is achieved upon applying mechanical and thermal stimuli that slide crystal planes and twist/bend anthryl units. The single crystals of the twisted/bent structures elucidate fluorescence switching behavior by varying the supramolecular architecture. Deformation in anthryl core for this new class of olefins controlling the solid-state emission is unique and recognized herein for the first time. The crossed-coupled olefin <b>DPDM</b> is introduced to establish structure-property relationships. This one-pot oxidative dephosphorylation strategy paves the way for designing diverse olefinic luminescent materials, displaying polymorphism-driven structural changes and tailoring the solid-state optical properties.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 28","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197231","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":"Dual Defect Passivation Engineering of Perovskite Photodetectors toward Infrared Filter-Free Full-Color Imaging","authors":"Luxin Zhang, Hongxu Chen, Longyu Guo, Gangjian Hu, Yao Ma, Xinren Zhang, Xinglu Xu, Guohua Wang, Wei Wei, Liang Shen","doi":"10.1002/adom.202501861","DOIUrl":"https://doi.org/10.1002/adom.202501861","url":null,"abstract":"<p>Mainstream broadband photodetector-based full-color imaging systems rely on Bayer filters for spectral discrimination, which necessitates infrared cut filters to block near-infrared light—a process that inevitably reduces optical transmittance and increases system weight. Perovskite photodetectors offer a promising infrared-filter-free alternative due to their spectrally tunable characteristics, with blade-coating fabrication enabling large-area scalable production. However, intrinsic defects and environmental instability severely limit their practical implementation. To address these challenges, a synergistic strategy is proposed that effectively suppresses iodide oxidation through guanidinium ion doping and concurrently employs in situ passivation using pre-synthesized quasi-2D perovskites, collectively reducing defect-state density. The fabricated detector demonstrates key metrics toward full-frame perovskite photodetectors, achieving defect density at 1.66 × 10<sup>15</sup> cm<sup>−3</sup>, specific detectivity at 1.42 × 10<sup>12</sup> Jones, and photoresponse nonuniformity of 1.21% across the active area. Systematic stability assessments further confirm outstanding environmental robustness; the ultimately fabricated large-area devices showed negligible change in switching characteristics after continuous operation for over 17 h and retained 90% of their initial EQE after 40 h under harsh conditions of 335.15 K and 80% relative humidity. Infrared-filter-free color imaging is demonstrated using a high-performance photodetector, validating its tremendous potential for full-color imaging applications.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 28","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197258","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":"3D Meta-Atoms for High Confinement of Mid-IR Radiation","authors":"Francesco Pisani, Usama Iqbal, Laure Tailpied, Baptiste Fix, Isabelle Sagnes, Yanko Todorov","doi":"10.1002/adom.202500433","DOIUrl":"10.1002/adom.202500433","url":null,"abstract":"<p>The ability to confine photons into structures with highly sub-wavelength volumes is extremely interesting for many applications such as sensing, nonlinear optics, and strong light-matter interactions. However, their realization is increasingly difficult as the wavelength becomes shorter, due to fabrication challenges and increased metal losses. In this work, the first experimental characterization of 3D circuit-like resonators operating in the mid-infrared is presented. Through a combination of simulations, reflectivity measurements, and scanning near-field optical microscopy, an analytical model capable of predicting the electromagnetic response of these structures based on their geometrical parameters is developed. The studied design offers a high degree of flexibility, enabling precise control over the resonant frequency of the various modes supported by the resonator, as well as independent control over radiative and non-radiative losses. Combined with the extreme field confinement demonstrated, these meta-atoms are highly promising for applications in detectors, emitters, nonlinear processes, and strong light-matter coupling.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 27","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202500433","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111328","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}
Zixuan Liu, Lin Wang, Yang Yang, Peng Meng, Xiaodong Wang, Hang Meng, Dongchen Qi, Hongxia Wang, Xiaofeng Liu, Jingsan Xu
{"title":"Oligomerization-Induced Supramolecular Glass with Superior Processability and Optical Functions","authors":"Zixuan Liu, Lin Wang, Yang Yang, Peng Meng, Xiaodong Wang, Hang Meng, Dongchen Qi, Hongxia Wang, Xiaofeng Liu, Jingsan Xu","doi":"10.1002/adom.202501259","DOIUrl":"10.1002/adom.202501259","url":null,"abstract":"<p>The fabrication of glasses, including silicate glasses, polymers, and amorphous metals, typically relies on the melting-quenching technique. However, this approach faces significant challenges when applied to recently emerging molecular glasses due to the inherent thermal instability of small molecules. Herein, the discovery of a new supramolecular glass (BGG) is presented, formed by a unique melting-quenching method that leverages unusual chemistry pathways. By manipulating the heating of a small molecule (benzoguanamine, BG), catalyst-free self-condensation reactions occur and produce multiple oligomers in a liquid state. The resulting high compositional and conformational entropy suppresses crystallization, allowing solidification into a rigid supramolecular glass under robust conditions. Despite being composed of low-weight molecules, the extensive intermolecular interactions endow BGG with distinct aggregation-induced emission (AIE, quantum yield up to 60%), polymer-like Young's modulus (7.95 GPa), and superior glass transition temperature (100.1 °C). BGG's excellent processability is exemplified by the fabrication of thin films and fibers, showcasing potential applications in photovoltaics and photonic waveguides. BGG also serves as a platform for synthesizing diverse donor-acceptor hybrids with > 95% energy transfer efficiency, enabling the creation of advanced materials with customizable functionalities.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 27","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202501259","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111374","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":"Magnetic Field Induced Circular Polarization of Photoluminescence from Manganese Doped Perovskites","authors":"Zhengwei Yang, Yu Zhang, Qingda Chang, Shuchun Zhang, Ji-Zhe Zhang, Chuang Zhang, Jiannian Yao","doi":"10.1002/adom.202500560","DOIUrl":"10.1002/adom.202500560","url":null,"abstract":"<p>Achieving simultaneous circularly polarized luminescence (CPL) with opposite handedness introduces additional complexity in CPL modulation, which is difficult, as it requires the generation of two excited states with distinct spin orientations. Here, dual magnetic circular polarization of luminescence (MCPL) is demonstrated in BA<sub>2</sub>Pb<sub>0.8</sub>Mn<sub>0.2</sub>Br<sub>4</sub> (BA = butylamine), where exciton and Mn<sup>2+</sup> <i>d-d</i> emissions exhibit CPL with opposite handedness under an external magnetic field, with g<sub>MCPL</sub> values of -5.2/5.7 × 10<sup>−3</sup> for exciton emission and 2.4/-2.1 × 10<sup>−3</sup> for Mn<sup>2+</sup> emission under ±1.6 T. Structural analyses confirm the substitution of Pb<sup>2+</sup> with Mn<sup>2+</sup> in the perovskite lattice, while magnetic measurements reveal the paramagnetic nature of BA<sub>2</sub>Pb<sub>0.8</sub>Mn<sub>0.2</sub>Br<sub>4</sub>, originating from the high-spin configuration of Mn<sup>2+</sup>. Zeeman splitting for both the ground state and excited state is considered for Mn<sup>2+</sup>, generating CPL signals opposite to those of exciton emission. This observation is further validated in Mn<sup>2+</sup>-doped perovskites with different organic cations and dimensions, providing a new approach for modulating multi-peak CPL with opposite handedness for applications in spintronics, quantum information, and magneto-optical technologies.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 27","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111372","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}
Wenxuan Wu, Xiaofei Yue, Shuwen Shen, Jinkun Han, Xueting Zhou, Qingqing Nie, Yuan Lin, Kunyuan Jiang, Ye Lu, Laigui Hu, Ran Liu, Zhijun Qiu, Chunxiao Cong
{"title":"Reversible Band Alignment Transition in WS2/InSe Heterostructures Enabled by Strain Engineering","authors":"Wenxuan Wu, Xiaofei Yue, Shuwen Shen, Jinkun Han, Xueting Zhou, Qingqing Nie, Yuan Lin, Kunyuan Jiang, Ye Lu, Laigui Hu, Ran Liu, Zhijun Qiu, Chunxiao Cong","doi":"10.1002/adom.202501332","DOIUrl":"https://doi.org/10.1002/adom.202501332","url":null,"abstract":"<p>Assembling 2D van der Waals heterostructures by stacking different 2D layered semiconductors is attracting tremendous interest owing to its advancements in electronics and optoelectronics. A key factor determining the application scenarios of these heterostructures is the band alignment, particularly the significance of type-I alignment (straddling gap) in photo-emitting diodes and type-II alignment (staggered gap) in photodetectors. Switching the band alignment without altering the constituent materials enables convenience and operability for multi-functionalization in single heterostructure. However, it remains challenging to identify a convenient technology for band structure engineering to achieve the desired band alignment transition. Here, through a designed thickness selection, a reversible band alignment transition is demonstrated in the 1L-WS<sub>2</sub>/nL-InSe heterostructures (n = 9, 10, 11) by applying tensile strain. This transition can be attributed to the switch in the relative positions of the valence band maximums induced by effective modulation of the band structures. This work presents a convenient strategy for designing band structures of 2D heterostructures, achieving a reversible band alignment transition within a single heterostructure. This offers significant guides for the design of optoelectronic devices with specific functionalities.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 28","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197259","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}
Arseny Yu. Gladkikh, Maria A. Sandzhieva, Abolfazl Mahmoodpoor, Oleksii Peltek, Sergey V. Makarov, Valentina V. Utochnikova
{"title":"Electroluminescence Enhancement with Gold Nanorods in Eu-Based Emission Organic Layer","authors":"Arseny Yu. Gladkikh, Maria A. Sandzhieva, Abolfazl Mahmoodpoor, Oleksii Peltek, Sergey V. Makarov, Valentina V. Utochnikova","doi":"10.1002/adom.202500702","DOIUrl":"https://doi.org/10.1002/adom.202500702","url":null,"abstract":"<p>Europium-based coordination compounds possessing narrow luminescence bands are promising emissive materials for organic light-emitting devices with high colour purity in the red spectral region. However, OLEDs with organic emissive layers based on lanthanides generally suffer from a slow recombination time (≈1 ms), which leads to a relatively low external quantum efficiency. Here, gold nanorods are employed with optimized resonant optical properties for the wavelength range 500–700 nm to modify photo- and electroluminescence from the Eu-based emission layer. Three different emissive europium complexes with a photoluminescence quantum yield of up to 100 % in powder and up to 63% in thin film are used. The experimental results supported by theoretical simulations show that the introduction of gold nanorods in the emission layer results in a 54% increase in the OLED performance. Thus, the highest brightness of solution-processed Eu-based OLEDs is obtained using the Eu(dbm)<sub>3</sub>TDZP complex with incorporated gold nanorods.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 28","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197151","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}
May Zin Hlaing, Vaskuri C. S. Theja, Vaithinathan Karthikeyan, May Thawda Oo, Md Rashedul Huqe, Chi Shun Yeung, Venkataraman Kannan, Vellaisamy A. L. Roy
{"title":"Quantum Plasmonic-Grating Enhanced Topological Heterojunction for Broadband Photodetection","authors":"May Zin Hlaing, Vaskuri C. S. Theja, Vaithinathan Karthikeyan, May Thawda Oo, Md Rashedul Huqe, Chi Shun Yeung, Venkataraman Kannan, Vellaisamy A. L. Roy","doi":"10.1002/adom.202501059","DOIUrl":"https://doi.org/10.1002/adom.202501059","url":null,"abstract":"<p>Topological insulators continue to be promising candidates for broadband photodetection owing to their robust surface states and superior optoelectronic properties. Here, an advanced heterojunction photodetector composed of p-type Sb₂Te₃ and n-type Bi₂Te₃ is reported, whose performance is significantly enhanced through the integration of plasmonic grating electrodes. The plasmonic gratings concentrate the incident electromagnetic field at the heterojunction interface, thereby promoting a stronger generation of photocarriers and reducing the carrier transit time (Wang & Du, 2016). As a result, the modified device exhibits an enhanced photocurrent density of 7.68 mA cm<sup>−</sup><sup>2</sup>, an improved responsivity of 42.67 mA W<sup>−1</sup>, and a detectivity of 1.478 × 10⁹ Jones. Moreover, the incorporation of plasmonic structures accelerates the photoresponse time by a factor of five relative to devices without such enhancement. These performance improvements underline the feasibility of employing topological insulator heterojunctions, in combination with plasmonic engineering, for applications in optical communications, high-speed electronics, and next-generation optoelectronic systems.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 28","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145197222","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":"Intensifying Light Emission in Composite Quantum Dot/Polymer Color-Conversion Films via Blue Light Redirection and Recycling with Dual-Size Polymer Beads","authors":"Guan-Hong Chen, Tyng-Woei Jang, Hsueh-Shih Chen","doi":"10.1002/adom.202500939","DOIUrl":"10.1002/adom.202500939","url":null,"abstract":"<p>This paper provides new insights into the luminescence efficiency of quantum dot (QD)-polymer composites, highlighting that light scattering plays a more critical role than QD concentration for color conversion applications. In this study, polymer-based light scattering particles (LSPs) embedded in the QD/polymer film is served as effective scattering centers. Their effects are analyzed based on size, concentration, and refractive index (RI). The scattering behavior of the LSPs is characterized using diffuse transmittance (T<sub>d</sub>) measurements and simulations of angular Mie-scattering patterns. Results reveal that LSPs of varying sizes predominantly influence forward and side scattering, directly affecting down-conversion events within the film. Increasing the concentration or RI of LSPs promotes backward scattering, which can attenuate incident light. By incorporating dual-sized LSPs into the QD/polymer films, light conversion efficiency (LCE) significantly improves. Initially, larger LSPs boost LCE to 160–170%, while the addition of smaller LSPs enhances side scattering, further elevating LCE to 193%.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 27","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111373","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":"Advancing Tin-Based Perovskite Emitters for High-Performance Displays: Strategies, Challenges, and Future Prospects","authors":"Zeyu Miao, Wenxu Yin, Xiaoyu Zhang","doi":"10.1002/adom.202501003","DOIUrl":"10.1002/adom.202501003","url":null,"abstract":"<p>Metal halide perovskites have emerged as a highly promising material for light-emitting applications, but concerns about lead toxicity have spurred eco-friendly alternatives. Tin-based perovskites have gained particular attention because of their unique properties, which are well suited to high-definition display applications. In this review, a comprehensive analysis of tin-based perovskite emitters is presented, with particular attention to their structural characteristics and optoelectronic properties. Additionally, recent advancements in tin-based perovskite light-emitting diodes are highlighted, emphasizing a number of strategies for improving device efficiencies, including inhibiting oxidation, optimizing crystallization processes, customizing device structures, and engineering A-site cations. Finally, potential strategies to overcome the challenges associated with tin-based perovskite light-emitting diodes in applications requiring full-color displays are discussed. These insights offer a roadmap for advancing full-color, high-performance displays using tin-based perovskites.</p>","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 27","pages":""},"PeriodicalIF":7.2,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145111375","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}