Advanced Optical Materials最新文献_第8页

Multiple Donor Modification of Boron-Based Emitters to Produce Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence for Blue OLEDs 对硼基发射极进行多供体修饰，产生聚集诱导发射和热激活延迟荧光，用于蓝色 OLED

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-17 DOI: 10.1002/adom.202402875

Mohan Gandhi Devulapally, Yeonju Jeong, Jae Hee Lee, Min Jeong Kwon, Sunwoo Kang, Taekyung Kim, Wan Pyo Hong

{"title":"Multiple Donor Modification of Boron-Based Emitters to Produce Aggregation-Induced Emission and Thermally Activated Delayed Fluorescence for Blue OLEDs","authors":"Mohan Gandhi Devulapally, Yeonju Jeong, Jae Hee Lee, Min Jeong Kwon, Sunwoo Kang, Taekyung Kim, Wan Pyo Hong","doi":"10.1002/adom.202402875","DOIUrl":"https://doi.org/10.1002/adom.202402875","url":null,"abstract":"Two novel multi-donor emitters, bearing 1,1,4,4,12,12,15,15-octamethyl-1,2,3,4,12,13,14,15-octahydro-6,10-dioxa-16b-boraanthra[3,2,1-de]tetracene (CyDOBNA) are presented. In 3TPA-CyDOBNA, three electron-rich triphenylamine (TPA) units are positioned on the central benzene ring of CyDOBNA to maximize distortion from an acceptor plane. This modification reduces the singlet–triplet energy gap (ΔEST) by 0.16 eV, highlighting its thermally activated delayed fluorescence (TADF) characteristics. However, congested TPA donors on the bottom side of the central benzene are found to facilitate non-radiative decay in a triplet state, indicating that ΔEST alone is insufficient for optimal device performance. Further refinement led to the creation of Ph2TPA-CyDOBNA, where two TPA donors and one phenyl group are positioned side by side to minimize non-radiative pathways while preserving the TADF behavior. This results in a reverse intersystem crossing rate of 2.30 × 105 s−1 and ΔEST of 0.15 eV. Photophysical investigations reveal that these emitters exhibit not only TADF but also aggregation-induced emission properties, maintaining a high photoluminescence quantum yield (PLQY) even in the solid state. In a doped OLED device, an external quantum efficiency (EQE) of 18.9% is achieved for 3TPA-CyDOBNA. Compared with 3TPA-CyDOBNA, the EQE of Ph2TPA-CyDOBNA improves by 21.1%, primarily because of the suppression of excessive flexibility from the three TPA donors.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 9","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689126","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

2D WSe2/MoS2 p-i-n Vertical Heterojunction Photodetectors by Selective Plasma Doping

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-16 DOI: 10.1002/adom.202402378

Qianqian Wu, Li Li, Chenglin Wang, Zhihao Wang, Zhengjin Weng, Yanfeng Jiang, Liangliang Lin, Xiaofeng Gu, Emigdio Chavez Angel, Alexandros El Sachat, Peng Xiao, Haiyan Nan, Shaoqing Xiao

{"title":"2D WSe2/MoS2 p-i-n Vertical Heterojunction Photodetectors by Selective Plasma Doping","authors":"Qianqian Wu, Li Li, Chenglin Wang, Zhihao Wang, Zhengjin Weng, Yanfeng Jiang, Liangliang Lin, Xiaofeng Gu, Emigdio Chavez Angel, Alexandros El Sachat, Peng Xiao, Haiyan Nan, Shaoqing Xiao","doi":"10.1002/adom.202402378","DOIUrl":"https://doi.org/10.1002/adom.202402378","url":null,"abstract":"Compared to traditional pn junctions, photodetectors based on 2D materials with a p-i-n structure offer enhanced photoresponsivity by broadening the depletion region and improving response speed by reducing junction capacitance. However, due to the lack of a mature, controllable doping process, p-i-n heterostructure photodetectors based on 2D materials are rarely reported. A 2D WSe2/MoS2 p-i-n vertical heterojunction photodetector created through plasma selective doping is presented. This device not only retains the wide junction region of the vertical heterojunction, but in coordination with the intrinsic layer (i layer), the width of the depletion region is broadened, increasing the photoactive area, Additionally, a strong built-in electric field is formed internally, greatly accelerating the rapid separation and transport of photogenerated carriers. The p-i-n vertical heterojunction photodetector exhibits a high responsivity and an ultra-fast response time (τr = 7.3 µs, τf = 5.49 µs), achieving nearly a 100 fold improvement over the pristine WSe2/MoS2 heterojunction. Under self-driven conditions, the device achieves a maximum responsivity of 0.32 A W−1 and a detectivity of 3.41 × 109 Jones at 637 nm. Additionally, stable detection in the near-infrared (NIR) is realized due to the interband transitions. These findings are expected to advance the development and application of photoelectric detection technologies.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 4","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115396","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

A Dual-Emissive DNA-Templated Silver Nanocluster with Near-Infrared I and II Emission

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-16 DOI: 10.1002/adom.202402752

Anna Gonzàlez-Rosell, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp

{"title":"A Dual-Emissive DNA-Templated Silver Nanocluster with Near-Infrared I and II Emission","authors":"Anna Gonzàlez-Rosell, Vanessa Rück, Mikkel B. Liisberg, Cecilia Cerretani, Villads R. M. Nielsen, Tom Vosch, Stacy M. Copp","doi":"10.1002/adom.202402752","DOIUrl":"https://doi.org/10.1002/adom.202402752","url":null,"abstract":"DNA-stabilized silver nanoclusters (DNA-AgN) are atomically precise and sequence-tuned nanomaterials with potential applications for deep tissue biomedical imaging. Here, a dual-emissive DNA-AgN is presented with fluorescence in the first near-infrared (NIR-I) spectral window and microsecond-lived photoluminescence in the second near-infrared (NIR-II) spectral window. High-resolution electrospray ionization mass spectrometry showed that the emitter has the molecular formula (DNA)2[Ag17]11+. The crystallization of (DNA)2[Ag17]11+ was unsuccessful, which prevented the use of X-ray diffraction to determine its structure. However, sequence variations of the templating DNA oligomer provided insights into nucleobases that are critical for stabilizing the Ag1711+. Moreover, addition of an adenosine or thymidine at the 5′-end of the stabilizing DNA strand maintained the composition and photophysical properties of the (DNA)2[Ag17]11+, suggesting a potential site for conjugation with biomolecules to enable targeted labeling in future bioimaging applications.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402752","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622266","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

Engineering Solid-State Fluorescent Carbon Dots with Aggregation-Induced Emission by Fatty Amine Chains-Regulated Charge Transfer and π-π Stacking

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-16 DOI: 10.1002/adom.202402638

Canpu Yang, Jiusheng Hu, Wenjiang Tan, Jinhai Si, Xun Hou

{"title":"Engineering Solid-State Fluorescent Carbon Dots with Aggregation-Induced Emission by Fatty Amine Chains-Regulated Charge Transfer and π-π Stacking","authors":"Canpu Yang, Jiusheng Hu, Wenjiang Tan, Jinhai Si, Xun Hou","doi":"10.1002/adom.202402638","DOIUrl":"https://doi.org/10.1002/adom.202402638","url":null,"abstract":"Carbon dots (CDs) are an encouraging green luminescent material; however, the aggregation-caused quenching (ACQ) effect poses a significant limitation for their use in solid-state devices. By adjusting precursor fatty amine chains, this paper synthesized four solid-state emissive CDs with aggregation-induced emission (AIE) properties (Lx-CDs). When water is introduced, the generation of Lx-CDs aggregates creates the switching off of the carbon-core emission (blue) in acetic acid solution and the switching on of the surface-state emission (orange). Results demonstrate that the disulfide bond and fatty amine chain structures allow considerable inhibition in the distance of aromatic skeletons, causing the aggregation-state emission, and the multiple interactions in aggregates can reduce the non-radiative processes benefiting the AIE. Besides, the fast and slow fluorescence species can be confirmed to correspond to the emission paths of carbon-core and surface-state, respectively. The solid-state emission wavelength, photoluminescence quantum yield (PLQY), and AIE strength can be engineered by the fatty amine chain regulated charge transfer and π-π stacking. This study not only reveals the intrinsic mechanism of carbon-core and surface-state luminescence dynamics in AIE CDs but also provides a method for controlling fluorescence wavelength and enhancing the emission of aggregated particles using precursor fatty amine chain length.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 7","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554846","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

Fiber Bragg Gratings with Micro-Engineered Temperature Coefficients

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-16 DOI: 10.1002/adom.202402726

Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells

{"title":"Fiber Bragg Gratings with Micro-Engineered Temperature Coefficients","authors":"Zipei Song, Mohan Wang, Frank P. Payne, Patrick S. Salter, Tongyu Liu, Steve J. Elston, Martin J. Booth, Stephen M. Morris, Julian A. J. Fells","doi":"10.1002/adom.202402726","DOIUrl":"https://doi.org/10.1002/adom.202402726","url":null,"abstract":"Fiber Bragg gratings (FBGs) are ubiquitous as sensors for a range of parameters and also as optical components in telecommunications systems. However, their temperature dependence of around +10 pm °C−1 is a limiting factor, making it challenging for sensors to discriminate strain from temperature, while telecommunications components require additional thermal stabilization. The temperature-dependent properties of optical fiber are micro-engineered by creating microchannels within the cladding using femtosecond laser-assisted etching. These channels are filled with low-loss refractive index liquids which have thermo-optic coefficients that are around 50 times greater magnitude than silica and the opposite sign. Low-loss FBGs are microfabricated in standard single-mode fiber, with wide control over their temperature coefficient between +10 and −55 pm °C−1. A temperature-insensitive FBG is also fabricated which is stable to ±12.5 pm over a 17–45 °C range, which is an order of magnitude reduction in sensitivity. It has only ±3.5% reflectivity variation from the mean over this range and only 1.29 dB insertion loss.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622265","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

Time-Resolved and Blue-Shifted Pure Room-Temperature Phosphorescence by Dynamic Isolation of Triplet Exciton in Crystal

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-14 DOI: 10.1002/adom.202402647

Yike Wang, Longyan Zhang, Jingyu Zhang, Chengxi Sun, Qixin Lv, Dongyue Cui, Ping Li, Chao Zheng, Runfeng Chen

{"title":"Time-Resolved and Blue-Shifted Pure Room-Temperature Phosphorescence by Dynamic Isolation of Triplet Exciton in Crystal","authors":"Yike Wang, Longyan Zhang, Jingyu Zhang, Chengxi Sun, Qixin Lv, Dongyue Cui, Ping Li, Chao Zheng, Runfeng Chen","doi":"10.1002/adom.202402647","DOIUrl":"https://doi.org/10.1002/adom.202402647","url":null,"abstract":"Organic room-temperature phosphorescence (RTP) with rich photophysical properties has attracted great interest, but it remains a big challenge to realize pure RTP without fluorescence in steady-state photoluminescence (SSPL) and blue-shifted RTP that intrinsically restricted by the spin-forbidden intersystem crossing (ISC) and the radiative decay of the low-lying triplet excited state. Herein, two fluorescence-free RTP molecules based on β-diketone-bridged phenoselenazine/phenothiazine are developed, which contain either Se or S heteroatom in the phosphor to significantly promote ISC; and, both isolated and J-aggregated phosphors are formed in crystal, where the J-aggregation can not only facilitate the ISC for pure RTP but also strength the emission for high phosphorescent quantum yield of 22.3%, while the isolated phosphor affords longer RTP lifetime up to 131 ms. Excitingly, blue-shifted (35 nm compare to SSPL) pure RTP from yellow-green (525 nm) to cyan (490 nm) that dynamically depending on the time and temperature is observed for the first time. Experimental and theoretical results indicate that the regulation of time/temperature-dependent RTP is attributed to the different lifetimes of the isolated and aggregated emission owing to the dynamic competition between different accumulation modes of phosphors in crystal aided by the interrupted conjugation by the sp3 C of β-diketone.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 7","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554870","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

Phase Transitions in Dimer/Layered Sb-Based Hybrid Halide Perovskites: An In-Depth Analysis of Structural and Spectroscopic Properties

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-13 DOI: 10.1002/adom.202402242

Iulia Corina Ciobotaru, Claudiu Constantin Ciobotaru, Cristina Bartha, Monica Enculescu, Mihail Secu, Silviu Polosan, Cristina Besleaga

{"title":"Phase Transitions in Dimer/Layered Sb-Based Hybrid Halide Perovskites: An In-Depth Analysis of Structural and Spectroscopic Properties","authors":"Iulia Corina Ciobotaru, Claudiu Constantin Ciobotaru, Cristina Bartha, Monica Enculescu, Mihail Secu, Silviu Polosan, Cristina Besleaga","doi":"10.1002/adom.202402242","DOIUrl":"https://doi.org/10.1002/adom.202402242","url":null,"abstract":"When used as the active layers—either as a light absorber in photovoltaic devices or as an electroluminescent material in light-emitting devices—lead-free perovskites significantly impact the performance of optoelectronic devices. This study focuses on antimony-based perovskites, which are promising for lighting applications. These types of perovskites enable the formation of self-trapped excitons (STEs) with higher dissociation energy than lead-based perovskites, which generate excitons with lower dissociation energy. The (CH3NH3)3Sb2I9 crystals are synthesized using two methods, resulting in distinct spatial configurations – dimer and dimer/layered mixtures, each exhibiting unique structural and spectroscopic properties, as revealed by comprehensive multi-parametric complementary analyses. Their emissive properties underscore the efficiency of the STE photoluminescence, driven by electron–phonon interactions and influenced by Sb-Sb distances in (CH3NH3)3Sb2I9 powder, whether dispersed in polymethyl-methacrylate or solution. The phase transition from monoclinic to hexagonal (dimer) and trigonal (layered) structures enabled the tuning of the optical properties in direct correlation with the structural and electrical features. The photoluminescence behavior of the STEs, analyzed in conjunction with the Raman spectroscopy, elucidates the dynamic process of the electron-phonon coupling effects in the dimer (face-capping Sb–I octahedra) and layered (corner-sharing Sb–I octahedra) crystallographic structures.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 4","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adom.202402242","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114855","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

Free-Standing Ultrathin Films of 2D Perovskite for Light-Emitting Devices Operating at Strong Coupling Regime (Advanced Optical Materials 2/2025)

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-13 DOI: 10.1002/adom.202570043

Karolina Łempicka-Mirek, Mateusz Król, Rafał Mazur, Wiktor Piecek, Jacek Szczytko, Paweł W. Majewski, Barbara Piętka

引用次数: 0

Efficient Optical Control of Quantum Tunneling Devices Based on Layered Violet Phosphorus

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-13 DOI: 10.1002/adom.202402720

Yanyong Li, Haolong Wu, Lyuchao Zhuang, Wai Kin Lai, Shenghuang Lin, Shu Ping Lau

{"title":"Efficient Optical Control of Quantum Tunneling Devices Based on Layered Violet Phosphorus","authors":"Yanyong Li, Haolong Wu, Lyuchao Zhuang, Wai Kin Lai, Shenghuang Lin, Shu Ping Lau","doi":"10.1002/adom.202402720","DOIUrl":"https://doi.org/10.1002/adom.202402720","url":null,"abstract":"Electron tunneling devices attract attention due to their potential applications in integrated circuits, memories, and high-frequency oscillators. However, limited works are devoted to the optical control of electron tunneling processes. The main reason is the low concentration of photogenerated carriers concerning the equilibrium values in heavy-doped regions. In this work, violet phosphorus (VP) with a unique bilayer tubular structure supplies an excellent platform for investigating the tunneling mechanisms under photo illumination. A VP-based vertical tunneling diode made of metal-insulator-semiconductor (MIS) stacking is presented. The photogenerated carriers increase the tunneling current by ≈4.2 times through photo illumination, leading to a considerable rectification ratio. In addition, a three-terminal tunneling field-effect transistor (TFET) made from VP flake with different thicknesses is also presented. The interband tunneling of electrons results in a tunable negative differential transconductance (NDT) at room temperature. The photoillumination can modulate the onset of the NDT region due to the variation of the density of states with Fermi level alignment in the channel and drain region. These results advance the understanding of electron transport mechanisms in VP-based tunneling devices, showing great potential for exploiting novel 2D multifunctional devices with interactions between light and carriers’ tunneling.","PeriodicalId":116,"journal":{"name":"Advanced Optical Materials","volume":"13 8","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143622469","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

Surface-Buckling-Enhanced 3D Metal/Semiconductor SERS-Active Device for Detecting Organic Chemicals (Advanced Optical Materials 2/2025) 用于检测有机化学品的表面巴克林增强型三维金属/半导体 SERS 活性器件（先进光学材料 2/2025）

IF 8 2区材料科学

Advanced Optical Materials Pub Date : 2025-01-13 DOI: 10.1002/adom.202570045

Pei-Chieh Tseng, Jing-Ling Bai, Cheng-Fang Hong, Chia-Feng Lin, Han-Yu Hsueh

引用次数: 0