Photonics and Nanostructures-Fundamentals and Applications最新文献

{"title":"Highly luminescent polyfluorene-based composite with CsPbX3 perovskite nanocrystals for light-emitting devices","authors":"M.A. Sandzhieva ,&nbsp;L.E. Zelenkov ,&nbsp;L.A. Otpushchennikov ,&nbsp;S. Miltsov ,&nbsp;E.V. Zhukova ,&nbsp;L.S. Litvinova ,&nbsp;S.A. Cherevkov ,&nbsp;I.M. Sevastianova ,&nbsp;D. Shestakov ,&nbsp;A.V. Yakimansky ,&nbsp;S.V. Makarov","doi":"10.1016/j.photonics.2024.101239","DOIUrl":"10.1016/j.photonics.2024.101239","url":null,"abstract":"<div><p>The rapid development of thin-film light emitting devices (LED) technologies has recently been associated with the superior optoelectronic properties of luminescent materials based on lead halide perovskite nanocrystals (NCs) due to their narrow emission line with high color purity. However, the large surface area of NCs leads to the need to use solvating ligands to prevent their agglomeration, which limits their use in optoelectronics. Here we develop a class of modular polyfluorene (PF) copolymer with 4-hydroxyphenyl-, diethylamino- and diethoxyphosphoryl- groups designed to stabilize perovskite NCs. We show that as-synthesized CsPbBr₃ NCs can easily be mixed with custom-designed PFs resulting in polymer/NCs composite that shows efficient Förster energy transfer (FRET) from PF to NC with green photoluminescence (PL). We also found that the NCs composite studied here can be used as an effective emissive layer in LED due to the strong interaction between polymer host and perovskite NCs providing an efficient charge transfer from the PF matrice to the NC emitter. The fabricated LED show excellent performance with a highest current efficiency of ∼25.2 cd A^–1. Our approach provides a low-cost and efficient way for light-emitting optoelectronic applications based on perovskite NCs.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101239"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139894129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphene oxide-decorated hyrogel inverse opal photonic crystal improving colorimetric and fluorescent responses for rapid detection of lipocalin-1","authors":"Pham Hong Phong ,&nbsp;Han-Sheng Chuang ,&nbsp;Dao Thi Thuong ,&nbsp;Nguyen Ngoc Sang ,&nbsp;Nghiem Thi Ha Lien ,&nbsp;Nguyen Trong Nghia ,&nbsp;Nguyen Duc Toan ,&nbsp;Le Minh Thanh","doi":"10.1016/j.photonics.2024.101237","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101237","url":null,"abstract":"<div><p>In this paper, the colorimetric and fluorescent biosensors prepared from polyethylene glycol diacrylate (PEGDA)-based inverse opal photonic crystal (IOPC) decorated with graphene oxide (GO) (termed as GO-modified PEGDA-based IOPC) have been explored for simple and rapid semi-quantitative and quantitative detections of biomarker lipocaline-1 (LCN1) in tear at low level, respectively. We found that only after the concentration of GO (<em>C</em>_<em>GO</em>) was sufficiently high to create a thin GO layer due to intermolecular interactions between neighboring GO molecules on the PEGDA surface, the red-shift of the reflection peak position (λ_stb) became effective. This widening of the shift in λ_stb became significant when GO-modified PEGDA-based IOPC was selectively attached with LCN1 via the immunoassay, because the attachment with LCN1 caused a reverse shift in λ_stb. Correspondingly, the visualizable photonic color could vary in wider range depending on the concentration of LCN1 (<em>C</em>_{<em>LCN1</em>}), from orange color of blank solution to light blue color of solution containing LCN1 at <em>C</em>_{<em>LCN1</em>} of 0.06 mg/mL using <em>C</em>_<em>GO</em> = 2.5 mg/mL. For quantification, <em>C</em>_<em>GO</em> and enrichment time of LCN1 were optimized for getting the maximum fluorescence microscopy intensity. The diagram for the relationship between fluorescence intensity and <em>C</em>_LCN1 showed various advantages of GO-modified PEGDA-based IOPC over non-GO-modified PEGDA-based IOPC. Those were higher fluorescence intensity, wider linear range and higher detection sensitivity. Thus, our results revealed potential applications of GO-modified PEGDA-based IOPC in screening patients with diabetic retinopathy (DR) in early stage.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101237"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139975934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A dual-purpose processor based on graphene hybrid plasmonic concentric resonators","authors":"Afshin Ahmadpour,&nbsp;Amir Habibzadeh-Sharif,&nbsp;Faezeh Bahrami-Chenaghlou","doi":"10.1016/j.photonics.2024.101245","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101245","url":null,"abstract":"<div><p>This paper presents systematic design and analysis of a dual-purpose integrated processor based on graphene hybrid plasmonic concentric add-drop microring resonators for fast differentiation and integration. The footprint of this processor is equal to 4 × 4.358 <em>μ</em>m², containing two concentric rings with small radii of 1679 and 1204 nm. Performance of the designed dual-purpose processor for the first and fractional-orders differentiation and integration has been analyzed by the three-dimensional finite-difference time-domain method in the frequency and time domains and the accuracy of the results has been confirmed using the formulas of the ideal math differentiator and integrator. From the point of view of the performance specifications, the designed dual-purpose temporal processor has excellent 3 dB bandwidth, insertion loss, energy efficiency, and accuracy in the first and fractional-orders differentiation and integration.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101245"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139986950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of Bragg scattering in the presence of dipole-dipole interaction in plasmonic nanohybrids","authors":"Mahi R. Singh ,&nbsp;Xintong Jiang ,&nbsp;Sergey Yastrebov","doi":"10.1016/j.photonics.2024.101238","DOIUrl":"10.1016/j.photonics.2024.101238","url":null,"abstract":"<div><p>We have developed a theory of the Bragg scattering for metallic nanohybrid made of an ensemble of metallic nanorods doped in a substrate. The substrate can gas, liquid or solid. An external laser field is applied to study the Bragg scattered light. The photons from the incident laser interact with the surface plasmons od nanorods and produce surface plasmon polaritons (SPPs). The incident laser field also induced dipoles in the ensemble of nanorods and they interact with each other via the dipole-dipole interaction (DDI). We have developed a theory for Bragg scattering for metallic nanohybrids using the coupled-mode formulism based on Maxwell’s equation in the presence of SPP and DDI fields. It is found that the theory of Bragg scattered depends on the susceptibility induced by the SPP and DDI fields. We used the quantum mechanical density matrix method to calculate the susceptibility. An analytical expression of the Bragg scattered light intensity is obtained. These expressions can be useful for experimental scientists and engineers who can used them to compare their experiments and make new types of plasmonic devices. Next, we have compared our theory with the experiment data for a nanohybrid made of ensemble of Au-nanoris doped in water. We found a good agreement between theory and experiments. We have also performed the numerical simulations to study the effect of SPP and DDI fields on the Bragg intensity. We have predicted an enhancement the Brag intensity due to the SPP and DDI couplings. The enhancement is due to the two extra scattering mechanisms of the SPP and DDI polaritons with acoustic phonons. We have also found that the one peak in the Bragg intensity can be split int many peaks due the SPP coupling, DDI coupling and phase factor. The splitting is due the Bragg factor appearing in the theory, and it includes the coupling of the incident laser, SPP and DDI electric fields with of acoustic phonons. The enhancement effect can be used to fabricate new types of nanosensors. Similarity, splitting phenomenon can be used to fabricate new types nanoswitches where one peak can be considered as the OFF position and many peaks can be considered as the ON position.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101238"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139896889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in GeSn alloys for MIR applications","authors":"V. Reboud ,&nbsp;O. Concepción ,&nbsp;W. Du ,&nbsp;M. El Kurdi ,&nbsp;J.M. Hartmann ,&nbsp;Z. Ikonic ,&nbsp;S. Assali ,&nbsp;N. Pauc ,&nbsp;V. Calvo ,&nbsp;C. Cardoux ,&nbsp;E. Kroemer ,&nbsp;N. Coudurier ,&nbsp;P. Rodriguez ,&nbsp;S.-Q. Yu ,&nbsp;D. Buca ,&nbsp;A. Chelnokov","doi":"10.1016/j.photonics.2024.101233","DOIUrl":"10.1016/j.photonics.2024.101233","url":null,"abstract":"<div><p>Silicon photonics is widely used for near InfraRed (IR) applications up to 1.6 µm. It plays a key role in short-range optical data communications. However, silicon photonics does not really address mid-IR applications, particularly in the 1.6–5 µm wavelength range. This spectral region is essential for environmental/life sensing and safety applications relying on the optical features of molecular vibrations, the aim being to discern and categorize complex chemical entities. Growing markets for such analysis prioritise sensitivity, specificity, compactness, energy-efficient operation and cost effectiveness. The need for a CMOS-compatible integrated photonic platform for the mid-IR is obvious. Such fully-group-IV semiconductor platform should include low-loss guided interconnects, detectors, modulators and, critically, efficient integrated light sources. This paper provides a comprehensive review of recent advances in GeSn-based mid-IR silicon-compatible devices, including optically and electrically pumped lasers, light-emitting diodes and photodetectors. It also discusses the principles underlying these developments, with focuses on material growth techniques and processing methods.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101233"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139667567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cost-effective ethanol sensor utilising inherent mode-transition in photonic crystal fiber","authors":"Hukam Singh ,&nbsp;Saurabh Mani Tripathi","doi":"10.1016/j.photonics.2024.101236","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101236","url":null,"abstract":"<div><p>In this paper, we analyse a novel photonic sensor utilising mode-transition in hexagonal photonic crystal fiber (HPCF) to monitor the ethanol content in an ethanol-gasoline blend. Using the finite-element method, the mode-transition from LP₀₂ cladding-mode to LP₀₁ core-mode is accomplished by raising the refractive index (RI) of the analyte layer, which removes the necessity of an additional high RI layer deposition at the fiber surface. We have rigorously optimized the air-filling fraction of the HPCF cladding such that the analyte RI range for the mode-transition would correspond to 0–25% v/v of ethanol in the blend, which is within its commercial range of ethanol-gasoline blend. With increasing analyte RI, we have observed the occurrence of a minimum in the total modal power carried by the sensor. We determine the sensitivity through this modal power variation by dividing it (about the power minimum) into two RI dynamic ranges of 1.400–1.410 (i.e., 25–11% ethanol) and 1.410–1.418 (i.e., 11–0% ethanol), respectively. The maximum calculated sensitivity of the sensor within the linear regime of the modal power variation is 0.46 dBm/% v/v and 0.40 dBm/% v/v, respectively, which are twice as high as the sensitivity offered by the FBG and LPG based sensors over the same dynamical range. In addition to the high sensitivity, the proposed sensor does not require any high-RI layer coating, making its design simpler and easier to implement.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101236"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139725795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of terahertz beam splitter based on I-shaped double open ring structure","authors":"Wu Pan,&nbsp;Ziheng Zhu,&nbsp;Zhen Zhang,&nbsp;Shengjian Hu,&nbsp;Mingsen Tan","doi":"10.1016/j.photonics.2024.101230","DOIUrl":"10.1016/j.photonics.2024.101230","url":null,"abstract":"<div><p><span>This paper presents a terahertz beam splitter based on an \"I\" type double open ring structure. Its structure unit is a typical metal-medium-metal structure; the top metal pattern comprises an \"I\" type double open ring, and the bottom layer is a continuous metal plate. The phase gradient </span>metasurface of 8 × 8 is formed by changing the opening size and radius of the I-shaped double-open ring. When a y-polarized wave is an incident vertically along the -z-axis and the +z axis, respectively, the y-polarized waves will be divided into four beams with different energy distributions along the x and y-axis, and two different beam splitting ratios can be obtained from the two incident modes. In 0.7 THz, when the y polarized waves are incident vertically along the -z-axis and +z axis, the beam splitting ratio is 0.8 and 2.1, respectively, and the beam splitting ratio is tuned. This terahertz beam splitter has the advantages of small size and low cost and can be used in terahertz communication, terahertz imaging, terahertz stealth, and other fields.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101230"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139587936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morphological and structural defect optimization in CsPbBr3 nanoparticle films for light-emitting electrochemical cells","authors":"A.S. Polushkin ,&nbsp;E.Y. Danilovskiy ,&nbsp;E.V. Sapozhnikova ,&nbsp;N.K. Kuzmenko ,&nbsp;A.P. Pushkarev ,&nbsp;S.V. Makarov","doi":"10.1016/j.photonics.2024.101232","DOIUrl":"10.1016/j.photonics.2024.101232","url":null,"abstract":"<div><p>Crystalline and morphological defects in the perovskite film affect the operation of light-emitting devices. Thus, advanced and scalable fabrication techniques can improve device properties. In this work, we use slot-die coating at ambient conditions, followed by hot air drying, to produce CsPbBr₃ light-emitting electrochemical cells. We compare this method to spin-coating and analyze film morphology and optical properties. We reveal that annealing the film on a hot plate increases PLQY and Shockley-Read-Hole lifetime, but worsens film morphology. In contrast, hot air drying during deposition improves morphology but reduces photoluminescence. The slot-die coating shows better results for device fabrication. With InGa and Al top electrodes, we achieve luminance 8100 cd m⁻² and 2900 cd m⁻² at a 5 V bias, respectively.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101232"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Voltage tuning multi-photon processes with a graphene-based Tamm structure","authors":"Haoyue Hao,&nbsp;Liang Li","doi":"10.1016/j.photonics.2024.101241","DOIUrl":"10.1016/j.photonics.2024.101241","url":null,"abstract":"<div><p>Tamm plasmon modes are used to realize the modulation of multi-photon processes. Through effectively combining the rear-earth doped layer and a monolayer graphene in a Tamm structure, the emission of multi-photon processes can be tuned by the applied voltage. Results show that the proposed structure has a narrow absorption peak near 1550 nm, which is corresponding to the excitation source wavelength of the multi-photon processes. Importantly, the emission intensity of multi-photon processes can be tuned from 1 fold to ∼10.1 fold when we changed the applied voltage. Meanwhile, the emission color of the multi-photon processes can be tuned from yellow to green via adjusting the applied voltage. The proposed voltage tuning approach may be promoted to all kinds of nonlinear optical phenomenons, like Stimulated Raman Scattering, optical mixing and photorefractive effect.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101241"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139927908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High sensitivity plasmonic refractive index sensor for early anaemia detection","authors":"Gaurav Kumar Yadav ,&nbsp;Sanjeev Kumar Metya ,&nbsp;Rukhsar Zafar ,&nbsp;Amit Kumar Garg","doi":"10.1016/j.photonics.2024.101235","DOIUrl":"https://doi.org/10.1016/j.photonics.2024.101235","url":null,"abstract":"<div><p>Plasmonics is gaining prominence in the area of optical sensing due to the unique way that noble metals and light interact to produce subwavelength confinement. A Metal Insulator Metal waveguide based plasmonic nanosensor exhibiting multi Fano resonance is proposed. The characteristics of transmittance of the proposed sensor are investigated using the Finite Difference Time Domain methodology. Three Fano resonances can be seen in the transmission characteristic with different sensitivities of 992.4 nm/RIU, 1294.8 nm/RIU and 2065.5 nm/RIU at 1.0257 <em>μ</em>m, 1.3239 <em>μ</em>m and 2.0798 <em>μ</em>m respectively. Furthermore, the sensor performance is investigated for potential fabrication issues arising out of variation in structural parameters such as the coupling distance and the radius (both inner and outer) of the semi-ring arc resonator. The performance of the sensor is also assessed for performance metrics like the Figure of Merit (FOM), Q factor, and Detection Limit, which are obtained as 39.7 RIU⁻¹, 39.9 and 0.025 respectively. The characteristics of the Fano resonances obtained through simulation is also validated by matching it with the theoretical Fano line shape function. The proposed sensor can find its use in biosensing applications.</p></div>","PeriodicalId":49699,"journal":{"name":"Photonics and Nanostructures-Fundamentals and Applications","volume":"58 ","pages":"Article 101235"},"PeriodicalIF":2.7,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139749724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}