ACS Applied Optical Materials最新文献

{"title":"MAPbBr3@PbBr(OH) Color Converter for White Light Emission and Underwater Data Transmission","authors":"Feifei Qin*,&nbsp;Yue Cao,&nbsp;Chengwei Wang,&nbsp;Guogang Zhang,&nbsp;Xiaoxuan Wang,&nbsp;Feng Chen*,&nbsp;Gangyi Zhu and Yongjin Wang*,&nbsp;","doi":"10.1021/acsaom.4c0044910.1021/acsaom.4c00449","DOIUrl":"https://doi.org/10.1021/acsaom.4c00449https://doi.org/10.1021/acsaom.4c00449","url":null,"abstract":"<p >Nowadays, most solid-state lighting-based visible light communication (VLC) technology suffers from the color converter’s short optical bandwidth or low stability. Herein, we fabricated MAPbBr₃@PbBr(OH) nanocrystals (NCs) with high optical bandwidth and water-stable properties for color conversion of VLC and a white light-emitting diode (LED) system. The sample’s characteristic photoluminescence (PL) spectrum is green emission peaked near 529 nm. As a color converter, it has a high bandwidth capacity for devices. The sample indicates internal quantum efficiency (IQE) of about 38.33% and a PL decay time of about 5.5 ns, and it can maintain its PL properties in water for over 90 days The calculated optical bandwidth is about 49.4 MHz. Its measured −3 dB bandwidth with a 405 nm laser diode can reach 25 MHz with a data rate over 50 Mbps. More interestingly, the perovskite NCs can replace the green phosphor to build a high-speed and multicolor LED, and the −3 dB bandwidth can be maintained at over 80% in this case. These features are far beyond the abilities of commercial green phosphors. Finally, we demonstrate an underwater text transmission system with a 405 nm LED, perovskite color conversion layer, and low-cost silicon-based photodetector.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"169–177 169–177"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143090621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-Tunable Electron–Hole Excitations and Optical Properties of the Janus MoSSe Monolayer","authors":"Shun Wang,&nbsp;Bin Hu,&nbsp;Tian-Xiang Qian,&nbsp;Ju Zhou,&nbsp;Yun Ding*,&nbsp;Tianyi Cai* and Sheng Ju*,&nbsp;","doi":"10.1021/acsaom.4c0043010.1021/acsaom.4c00430","DOIUrl":"https://doi.org/10.1021/acsaom.4c00430https://doi.org/10.1021/acsaom.4c00430","url":null,"abstract":"<p >Recently, two-dimensional (2D) transition metal dichalcogenides with Janus structures, such as MoSSe, have been successfully synthesized through a two-step process involving hydrogenation followed by thermal selenization on a MoS₂ monolayer, where the vertical dipole introduces a degree of freedom that enables the exploration of unusual optical properties. Incorporating both exciton and spin–orbit coupling (SOC) effects within the <i>GW</i>-BSE framework, however, remains a challenge, resulting in significant discrepancies between the theoretical prediction and the experimentally measured optical gap for the pristine MoSSe monolayer. In this paper, we utilize first-principles density functional theory combined with the many-body perturbation method, i.e., the <i>GW</i>-BSE method, to investigate strong exciton effects on the optical responses of 2D Janus MoSSe. For the pristine system, the vertical dipole moment attains a value of 390 e·μm, contrasting with nonpolar MoS₂ and MoSe₂ monolayers. The exciton-dominated optical gap of 1.70 eV aligns closely with the experimentally determined value of 1.68 eV. Our investigation into strain effects reveals that as the lattice constant increases, the vertical dipole moment increases from 360 e·μm under −4% strain to 400 e·μm under 4% strain. Simultaneously, both the global band gap and the direct band gap at the <i>K</i> point decrease. The optical gap monotonically increases from 1.3 to 2.1 eV, which is comparable to the tunable energy range of 0.8 eV found in MoS₂ and MoSe₂ monolayers and exceeds that of blue and Hittorf’s phosphorenes. Regarding the SOC effect, the splitting between the A and B peaks shows an increasing trend, with a variation of 24 meV. This behavior can be employed for precise optical control, facilitating the development of optical modulators and demodulators. Together with the increasing lifetime and decreasing binding energy of excitons, the enhanced intrinsic dipole is expected to promote effective electron–hole separation, thereby enhancing the efficiency of photon-to-electricity conversion in this Janus structure.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"102–111 102–111"},"PeriodicalIF":0.0,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143090188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stepwise Surface Ligand Engineering on Gold Nanoclusters: Controlled Photochemistry, Solvation Dynamics and Photosensitization","authors":"Arunavo Chatterjee,&nbsp;Ishani Mukherjee,&nbsp;Mallika Mukherjee and Pradipta Purkayastha*,&nbsp;","doi":"10.1021/acsaom.4c0043310.1021/acsaom.4c00433","DOIUrl":"https://doi.org/10.1021/acsaom.4c00433https://doi.org/10.1021/acsaom.4c00433","url":null,"abstract":"<p >The effect of stepwise surface modification of 6-azo-thiothyamine (ATT) protected AuNCs (ATT-AuNCs), initially with <span>l</span>-Arginine (Arg@ATT-AuNCs) and further with cationic surfactants, such as CTAB (CTAB-Arg@ATT-AuNCs) and DTAB (DTAB-Arg@ATT-AuNCs), has been reported here. Stepwise surface ligand engineering (SSLE) significantly slows down the nonradiative transition rate in the following order: ATT-AuNCs &lt; Arg@ATT-AuNCs &lt; DTAB-Arg@ATT-AuNCs &lt; CTAB-Arg@ATT-AuNCs, which increases the average radiative lifetime in the same order. This process also increases the photoluminescence quantum yield (PLQY) of the AuNCs following the same trend (2% &lt; 41% &lt; 58% &lt; 72%). There is a simultaneous effect on the solvation dynamics of the respective AuNCs where the solvation time increases in the order ATT-AuNCs &lt; Arg@ATT-AuNCs &lt; DTAB-Arg@ATT-AuNCs &lt; CTAB-Arg@ATT-AuNCs. Methyl viologen-derived photosensitization of the AuNCs and the subsequent effect on photoinduced electron transfer (PET) efficiency is tested. These AuNCs are singlet oxygen generators which modulate exactly in the same order to that of the solvation time and the PLQY. This, to our knowledge, is the first comprehensive report on the effect of SSLE on AuNCs to control photochemistry, solvation dynamics and photosensitization with singlet oxygen generating propensity.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"131–143 131–143"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improved Temperature Sensing in Upconversion Fiber-Optic Probes via Spectral Modulation by Cladding Removal","authors":"Cecilia N. Jandar,&nbsp;Germán R. Fernández,&nbsp;Alfredo M. Aguilar,&nbsp;Ayelén Prado,&nbsp;Diego F. Grosz and Eduardo D. Martínez*,&nbsp;","doi":"10.1021/acsaom.4c0042010.1021/acsaom.4c00420","DOIUrl":"https://doi.org/10.1021/acsaom.4c00420https://doi.org/10.1021/acsaom.4c00420","url":null,"abstract":"<p >Optical-fiber sensors lie at the very core of detection technologies due to their small footprint, lightweight, versatility, chemical inertness, immunity to electromagnetic interference, and application to long-range distributed sensing. In recent times, the search for improved temperature sensors has led to the inclusion of temperature-sensitive nanoparticles in optical-fiber settings. In this work, we use NaYF₄:Yb³⁺/Er³⁺ upconversion nanoparticles to fabricate a ratiometric fiber-optic temperature sensor. We propose a scheme consisting of pumping at 980 nm to excite coatings of nanoparticles along one end of the optical fibers. We use standard single-mode fibers and multi-mode fibers and explore the effect of removing the fiber cladding in order to allow for the interaction of the nanoparticles with higher-order modes. The modified optical fibers were tested as thermal probes by analyzing the emission spectra. A temperature resolution of 3 and 7 K was achieved for single-mode and multi-mode probes, respectively, by keeping the fiber cladding. However, removal of the cladding allowed the resolution to significantly improve to 0.4 and 0.5 K for single-mode and multi-mode operation, respectively. This is the result of a significantly improved contrast between measured spectral bands, resulting in sharper profiles that can be conveniently measured at reduced optical powers. By removing the fiber cladding, light can interact with the nanoparticles over an extended area, mitigating high-intensity effects that may occur at the fiber output end. A fiber-optic sensor (FOS) design consisting of a modified optical fiber (OF) and a collection fiber within a metallized glass capillary tube was successfully built and tested as a proof-of-concept. These results underscore the capabilities of optical fibers as cutting-edge temperature sensors for applications in diverse areas such as environmental monitoring, industry, and healthcare.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"91–101 91–101"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dielectric and Light-Scattering Features of a Pseudopeptide-Polymer-Integrated Nematic Liquid Crystal with Negative Dielectric Anisotropy","authors":"Rishikesh Kushawaha,&nbsp;Sagar Jawla,&nbsp;V. Haridas and Aloka Sinha*,&nbsp;","doi":"10.1021/acsaom.4c0042910.1021/acsaom.4c00429","DOIUrl":"https://doi.org/10.1021/acsaom.4c00429https://doi.org/10.1021/acsaom.4c00429","url":null,"abstract":"<p >We present the dielectric and light-scattering properties of a liquid crystal (LC) with negative dielectric anisotropy that has been incorporated with an amino acid-based pseudopeptide polymer. The polymer precipitates in the form of micrometer-sized spheres in the negative dielectric anisotropy nematic liquid crystal (nLC), which serves as a nonsolvent. Ion density, diffusion coefficient, conductivity, and ion mobility are investigated from experimental dielectric measurement of the nLC, which contained pseudopeptide polymer at concentrations of 2.5, 5, and 7.5 wt %. The polymer’s incorporation into a nLC enhances the ion density, diffusion coefficient, conductivity, and ion mobility. The change in the ionic properties has a major impact on the electrohydrodynamic instability (EHDI) of the LC. The incident light is scattered by the chaotic turbulence state produced by the EHDI effect. The light-scattering characteristics of the polymer-stabilized LC are investigated by using direct transmission. The pseudopeptide polymer microsphere in the nLC significantly enhances the light-scattering performance. The stated method demonstrates the fabrication of a light-scattering device utilizing LCs and a polymer without employing UV or thermal curing processes. The nLC with the polymer significantly enhances the light scattering in the EHDI state, provides a high contrast ratio, and significantly lowers the voltage needed to generate the scattering state. The light-scattering characteristics of the device can be utilized in various electro-optic systems that rely on light scattering, such as projection displays, smart windows, and tunable light diffusers.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"112–124 112–124"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strategies to Enhance the Efficiency of Cu3BiS3-Based Photovoltaic Devices: Simulation Insights and Buffer Layer Engineering","authors":"Maxwell Santana Liborio,&nbsp;Carlos Oliveira Amorim*,&nbsp;José César Augusto Queiroz,&nbsp;Sivabalan M. Sivasankar,&nbsp;Thercio Henrique de Carvalho Costa and António F. da Cunha,&nbsp;","doi":"10.1021/acsaom.4c0041110.1021/acsaom.4c00411","DOIUrl":"https://doi.org/10.1021/acsaom.4c00411https://doi.org/10.1021/acsaom.4c00411","url":null,"abstract":"<p >Cu₃BiS₃ (CBS) is a promising p-type absorber known for its stability, nontoxicity, and noncritical elements. However, CBS-based photovoltaic (PV) devices currently exhibit power conversion efficiencies (PCEs) that significantly lag behind those of established PV technologies. This study explores the enhancement of CBS-based PV devices through SCAPS-1D simulations, examining the effects of different buffer layers (CdS, ZnS, and ZnOS) and transparent conductive oxides (TCOs) on device performance. Our findings show that a ZnOS buffer layer improves substantially the PCEs due to its superior band alignment with CBS. Moreover, by fine-tuning the properties of each layer, we demonstrate a potential efficiency increase up to 20.07%. These results highlight CBS’s potential to create efficient, sustainable PV cells and provide a framework for further experimental and theoretical advancements.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"81–90 81–90"},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design, Synthesis, and Characterization of a Phenothiazine-Functionalized Triazine Derivative for Electrochromic Devices","authors":"Pankaj Kumar Gupta,&nbsp;Love Bansal,&nbsp;Rajesh Kumar* and Rajneesh Misra*,&nbsp;","doi":"10.1021/acsaom.4c0034510.1021/acsaom.4c00345","DOIUrl":"https://doi.org/10.1021/acsaom.4c00345https://doi.org/10.1021/acsaom.4c00345","url":null,"abstract":"<p >A phenothiazine-functionalized triazine derivative <b>TAZ-3PTZBr</b> was designed and synthesized via a cyclization reaction with trifluoromethanesulfonic acid in good yield. The photophysical, electrochemical, and computational studies of the synthesized compound <b>TAZ-3PTZBr</b> were systematically investigated. The phenothiazine-functionalized triazine derivative <b>TAZ-3PTZBr</b> exhibits an absorption maximum at 393 nm due to the ICT transition from the donor phenothiazine to the acceptor triazine moiety. The electrochemical analyses reveal that <b>TAZ-3PTZBr</b> exhibits one reversible oxidation wave on the anodic side assigned to the phenothiazine moiety and one reduction wave on the cathodic side corresponding to the triazine moiety. The electrochromic device of <b>TAZ-3PTZBr</b> displays fast switching in less than a second with a coloration efficiency of 514 and 407 cm²/C under an external bias of ±1.6 V at 500 and 670 nm, respectively.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"14–21 14–21"},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasmonic Microgel Actuation Induced by Diffractively Excited Modes","authors":"Hiroaki Nishiyama*,&nbsp;Wataru Tabata,&nbsp;Haruka Matsumoto,&nbsp;Shun Odashima and Shion Narushima,&nbsp;","doi":"10.1021/acsaom.4c0036610.1021/acsaom.4c00366","DOIUrl":"https://doi.org/10.1021/acsaom.4c00366https://doi.org/10.1021/acsaom.4c00366","url":null,"abstract":"<p >Light-driven soft actuators at the microscale have gained significant interest, owing to their flexible and contactless manipulation of small objects. However, a major challenge in this field is the limited number of control parameters for deformation, resulting in relatively simple actuation modes. To achieve complex deformable actuators, it is crucial to increase the number of control parameters. We investigated the deformation of PNIPAM microgels induced by diffractively excited plasmons, chosen for their high controllability. Upon irradiation with 830 nm light, the microgel rapidly shrank by 53% in width, followed by a return to its original state. The photomechanical energy conversion using Au gratings was estimated to be 88 times higher than that of nonplasmonic Au thin films. This enhanced deformation was tunable by controlling not only the polarization angle of the excitation light but also the grating area. The deformation of the grating with an area of 30 μm² was four times greater than that with an area of 15 μm², despite the entire irradiated spot being confined within each grating area due to the superposition of the plasmonic waves.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"22–30 22–30"},"PeriodicalIF":0.0,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaom.4c00366","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143087084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational Design of Low-Molecular-Weight Organogels with Ultralong Room-Temperature Phosphorescence for Security","authors":"Yi Shi,&nbsp;Huamiao Lin,&nbsp;Peng Geng*,&nbsp;Shuzhan Chen,&nbsp;Dan Luo* and Shuzhang Xiao*,&nbsp;","doi":"10.1021/acsaom.4c0047910.1021/acsaom.4c00479","DOIUrl":"https://doi.org/10.1021/acsaom.4c00479https://doi.org/10.1021/acsaom.4c00479","url":null,"abstract":"<p >Supramolecular organogels have emerged as a promising matrix for achieving dynamic room-temperature phosphorescence (RTP) due to their rigid three-dimensional network structure, sensitive responsive behavior to external stimuli, and perfect reversibility. However, the efficient construction of single-component, ultralong organic RTP materials remains a significant challenge. In this study, we utilized all-atom molecular dynamics simulations to predict the self-assembly process of three low-molecular-weight carbazole derivatives with rigid chemical structures (<b>Cz-P</b>, <b>Cz-PF</b>, and <b>Cz-PCl</b>), ultimately identifying <b>Cz-P</b> as a potential RTP organogelator. <b>Cz-P</b> could form a stable gel in the mixture of DMSO/H₂O (1:1 v/v), and introducing a halogen atom to build halogen bonding was destructive to achieve balanced intermolecular interactions, which is essential for gelation. Notably, the <b>Cz-P</b> gel emitted ultralong RTP (τ_p = 581.8 ms) in the gel state. Moreover, the triplet-to-singlet Förster resonance energy transfer (TS-FRET) between the <b>Cz-P</b> donor and the fluorescent dye Sulforhodamine 101 (acceptor) provided a long-lived red fluorescence. Due to the gel’s sensitive responsive to thermal stimuli, the afterglow could be conveniently switched “on” and “off”, demonstrating excellent fatigue resistance and multilevel anticounterfeiting capabilities.</p>","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"3 1","pages":"231–239 231–239"},"PeriodicalIF":0.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143086652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ACS Applied Materials & Interfaces Family Early Career Forum 2024","authors":"Xing Yi Ling,&nbsp;","doi":"10.1021/acsaom.4c0048310.1021/acsaom.4c00483","DOIUrl":"https://doi.org/10.1021/acsaom.4c00483https://doi.org/10.1021/acsaom.4c00483","url":null,"abstract":"","PeriodicalId":29803,"journal":{"name":"ACS Applied Optical Materials","volume":"2 12","pages":"2387–2389 2387–2389"},"PeriodicalIF":0.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143126668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}