Opto-Electronic Advances最新文献_第10页

Beyond Lambertian light trapping for large-area silicon solar cells: fabrication methods 超越大面积硅太阳能电池的朗伯氏光捕获:制造方法

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-12-31 DOI: 10.29026/oea.2022.210086

J. Maksimovic, Jingwen Hu, S. Ng, T. Katkus, G. Seniutinas, T. P. Rivera, M. Stuiber, Y. Nishijima, S. John, S. Juodkazis

{"title":"Beyond Lambertian light trapping for large-area silicon solar cells: fabrication methods","authors":"J. Maksimovic, Jingwen Hu, S. Ng, T. Katkus, G. Seniutinas, T. P. Rivera, M. Stuiber, Y. Nishijima, S. John, S. Juodkazis","doi":"10.29026/oea.2022.210086","DOIUrl":"https://doi.org/10.29026/oea.2022.210086","url":null,"abstract":"Light trapping photonic crystal (PhC) patterns on the surface of Si solar cells provides a novel opportunity to approach the theoretical efficiency limit of 32.3%, for light-to-electrical power conversion with a single junction cell. This is beyond the efficiency limit implied by the Lambertian limit of ray trapping 29%. The interference and slow light effects are harnessed for collecting light even at the long wavelengths near the Si band-gap. We compare two different methods for surface patterning, that can be extended to large area surface patterning: 1) laser direct write and 2) step-&-repeat 5-times reduction projection lithography. Large area throughput limitations of these methods are compared with the established electron beam lithography (EBL) route, which is conventionally utilised but much slower than the presented methods. Spectral characterisation of the PhC light trapping is compared for samples fabricated by different methods. Reflectance of Si etched via laser patterned mask was 7% at visible wavelengths and was comparable with Si patterned via EBL made mask. The later pattern showed a stronger absorbance than the Lambertian limit (M.-L. Hsieh et al., Sci. Rep. 10, 11857 (2020)).","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46399163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 6

Laser-induced periodic surface structured electrodes with 45% energy saving in electrochemical fuel generation through field localization 激光诱导周期性表面结构电极，通过场定位实现电化学燃料发电节能45%

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-12-13 DOI: 10.29026/oea.2022.210105

C. S. Saraj, S. Singh, Gopal Verma, R. Rajan, Wei Li, Chunlei Guo

{"title":"Laser-induced periodic surface structured electrodes with 45% energy saving in electrochemical fuel generation through field localization","authors":"C. S. Saraj, S. Singh, Gopal Verma, R. Rajan, Wei Li, Chunlei Guo","doi":"10.29026/oea.2022.210105","DOIUrl":"https://doi.org/10.29026/oea.2022.210105","url":null,"abstract":"Electrochemical oxidation/reduction of radicals is a green and environmentally friendly approach to generate fuels. These reactions, however, suffer from sluggish kinetics due to a low local concentration of radicals around the electrocatalyst. A large electrode potential can enhance the fuel generation efficiency via enhancing the radical concentration around the electrocatalyst sites, but this comes at the cost of electricity. Here, we report about 45 % saving in energy to achieve an electrochemical hydrogen generation rate of 3×1016 molecules cm-2s-1 (current density: 10 mA/cm2) through localized electric field-induced enhancement in the reagent concentration (LEFIRC) at laser-induced periodic surface structured (LIPSS) electrodes. The finite element model is used to simulate the spatial distribution of the electric field to understand the effects of LIPSS geometric parameters in field localization. When the LIPSS patterned electrodes are used as substrates to support Pt/C and RuO2 electrocatalysts, the 10 overpotentials for HER and OER are decreased by 40 and 25 %, respectively. Moreover, the capability of the LIPSS-patterned electrodes to operate at significantly reduced energy is also demonstrated in a range of electrolytes including alkaline, acidic, neutral, and seawater. Importantly, when two LIPSS patterned electrodes were assembled as the anode and cathode into a cell, it requires 330 mVs of lower electric potential with enhanced stability over a similar cell made of pristine electrodes to drive a current density of 10 mA/cm2. This work demonstrates a physical and versatile approach of electrode surface patterning to boost electrocatalytic fuel generation performance and can be applied to any metal and semiconductor catalysts for a range of electrochemical reactions.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44786068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 4

Intelligent metaphotonics empowered by machine learning 机器学习赋予的智能变形学

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-10-22 DOI: 10.29026/oea.2022.210147

S. Krasikov, Aaron D Tranter, A. Bogdanov, Y. Kivshar

引用次数: 54

Ultrashort pulsed laser induced complex surface structures generated by tailoring the melt hydrodynamics 通过调整熔体流体力学产生超短脉冲激光诱导的复杂表面结构

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-27 DOI: 10.29026/oea.2022.210052

F. Fraggelakis, G. Tsibidis, E. Stratakis

{"title":"Ultrashort pulsed laser induced complex surface structures generated by tailoring the melt hydrodynamics","authors":"F. Fraggelakis, G. Tsibidis, E. Stratakis","doi":"10.29026/oea.2022.210052","DOIUrl":"https://doi.org/10.29026/oea.2022.210052","url":null,"abstract":"We present a novel approach for tailoring the laser induced surface topography upon femtosecond (fs) pulsed laser irradiation. The method employs spatially controlled double fs laser pulses to actively regulate the hydrodynamic microfluidic motion of the melted layer that gives rise to the structures formation. The pulse train used, in particular, consists of a previously unexplored spatiotemporal intensity combination including one pulse with Gaussian and another with periodically modulated intensity distribution created by Direct Laser Interference Patterning (DLIP). The interpulse delay is appropriately chosen to reveal the contribution of the microfluidic melt flow, while it is found that the sequence of the Gaussian and DLIP pulses remarkably influences the surface profile attained. Results also demonstrate that both the spatial intensity of the double pulse and the effective number of pulses per irradiation spot can further be modulated to control the formation of complex surface morphologies. The underlying physical processes behind the complex patterns’ generation were interpreted in terms of a multiscale model combining electrodynamic excitation with melt hydrodynamics. We believe that this work can constitute a significant step forward towards producing laser induced surface structures on demand by tailoring the melt microfluidic phenomena.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44890379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 24

Cylindrical vector beams reveal radiationless anapole condition in a resonant state 圆柱矢量光束在谐振状态下显示无辐射拟极点状态

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-22 DOI: 10.29026/oea.2022.210014

Yudong Lu, Yi Xu, Ouyang Xu, Mingcong Xian, Yaoyu Cao, Kai Chen, Xiangping Li

{"title":"Cylindrical vector beams reveal radiationless anapole condition in a resonant state","authors":"Yudong Lu, Yi Xu, Ouyang Xu, Mingcong Xian, Yaoyu Cao, Kai Chen, Xiangping Li","doi":"10.29026/oea.2022.210014","DOIUrl":"https://doi.org/10.29026/oea.2022.210014","url":null,"abstract":"Nonscattering optical anapole condition is corresponding to the excitation of radiationless field distributions in open resonators, which offers new degrees of freedom for tailoring light-matter interaction. Conventional mechanisms for achieving such a condition relies on sophisticated manipulation of electromagnetic multipolar moments of all orders to guarantee superpositions of vanished moment strengths at the same wavelength. In contrast, here we report on the excitation of optical radiationless anapole hidden in a resonant state of a Si nanoparticle utilizing tightly focused radially polarized (RP) beam. The coexistence of magnetic resonant state and anapole condition at the same wavelength further enables the triggering of resonant state by tightly focused azimuthally polarized (AP) beam whose corresponding electric multipole coefficient could be zero. As a result, high contrast inter-transition between radiationless anapole condition and ideal magnetic resonant scattering can be achieved experimentally in visible spectrum. The proposed mechanism is general which can be realized in different types of nanostructures. Our results showcase that the unique combination of structured light and structured Mie resonances could provide new degrees of freedom for tailoring light-matter interaction, which might shed new light on functional meta-optics.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45493814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 15

Near-perfect fidelity polarization-encoded multilayer optical data storage based on aligned gold nanorods 基于对齐金纳米棒的近乎完美保真偏振编码多层光学数据存储

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-13 DOI: 10.29026/oea.2021.210002

Linwei Zhu, Yaoyu Cao, Qiuqun Chen, Xueying Ouyang, Yi Xu, Zhongliang Hu, J. Qiu, Xiangping Li

{"title":"Near-perfect fidelity polarization-encoded multilayer optical data storage based on aligned gold nanorods","authors":"Linwei Zhu, Yaoyu Cao, Qiuqun Chen, Xueying Ouyang, Yi Xu, Zhongliang Hu, J. Qiu, Xiangping Li","doi":"10.29026/oea.2021.210002","DOIUrl":"https://doi.org/10.29026/oea.2021.210002","url":null,"abstract":"Encoding information in light polarization is of great importance in facilitating optical data storage (ODS) for information security and data storage capacity escalation. However, despite recent advances in nanophotonic techniques vastly enhancing the feasibility of applying polarization channels, the data fidelity in reconstructed bits has been constrained by severe crosstalks occurring between varied polarization angles during data recording and reading process, which gravely hindered the utilization of this technique in practice. In this paper, we demonstrate an ultra-low crosstalk polarization-encoding multilayer optical data storage technique for high-fidelity data recording and retrieving by utilizing a nanofibre-based nanocomposite film involving highly aligned gold nanorods (GNRs). With parallelizing the gold nanorods in the recording medium, the information carrier configuration minimizes miswriting and misreading possibilities for information input and output, respectively, compared with its randomly self-assembled counterparts. The enhanced data accuracy has significantly improved the bit recall fidelity that is quantified by a correlation coefficient higher than 0.99. It is anticipated that the demonstrated technique can facilitate the development of multiplexing ODS for a greener future.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44709018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 21

Recent developments of quantum dot based micro-LED based on non-radiative energy transfer mechanism 基于非辐射能量传递机制的量子点微型led研究进展

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-06 DOI: 10.29026/OEA.2021.210022

X. Fan, Tingzhu Wu, Bin Liu, Rong-Xia Zhang, H. Kuo, Zhong Chen

引用次数: 17

Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures 微结构柔性压阻传感器的激光直写与表征

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-06 DOI: 10.29026/OEA.2021.200061

Zhang Chenying, Wei Zhou, Da Geng, Cheng Bai, Weida Li, Songyue Chen, Tao Luo, Lifeng Qin, Xie Yu

{"title":"Laser direct writing and characterizations of flexible piezoresistive sensors with microstructures","authors":"Zhang Chenying, Wei Zhou, Da Geng, Cheng Bai, Weida Li, Songyue Chen, Tao Luo, Lifeng Qin, Xie Yu","doi":"10.29026/OEA.2021.200061","DOIUrl":"https://doi.org/10.29026/OEA.2021.200061","url":null,"abstract":"Functional materials with high viscosity and solid materials have received more and more attentions in flexible pressure sensors, which are inadequate in the most used molding method. Herein, laser direct writing (LDW) method is proposed to fabricate flexible piezoresistive sensors with microstructures on PDMS/ MWCNTs composites with an 8% MWCNTs mass fraction. By controlling laser energy, microstructures with different geometries can be obtained, which significantly impacts the performances of the sensors. Subsequently, curved microcones with excellent performance are fabricated under parameters of f = 40 kHz and v = 150 mm·s-1. The sensor exhibits continuous multi-linear sensitivity, ultrahigh original sensitivity of 21.80 % kPa-1, wide detection range of over 20 kPa, response/recovery time of ~100 ms and good cycle stability for more than 1000 times. Besides, obvious resistance variation can be observed when tiny pressure (a peanut of 30 Pa) is applied. Finally, the flexible piezoresistive sensor can be applied for LED brightness controlling, pulse detection and voice recognition.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48208455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 18

Directional sliding of water: biomimetic snake scale surfaces 水的定向滑动:仿生蛇鳞表面

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-04-06 DOI: 10.29026/OEA.2021.210008

Yizhe Zhao, Yilin Su, X. Hou, Minghui Hong

引用次数: 46

Light-emitting MXene quantum dots 发光MXene量子点

IF 14.1 1区物理与天体物理

Opto-Electronic Advances Pub Date : 2021-03-25 DOI: 10.29026/OEA.2021.200077

A. S. Sharbirin, Sophia Akhtar, Jeongyong Kim

{"title":"Light-emitting MXene quantum dots","authors":"A. S. Sharbirin, Sophia Akhtar, Jeongyong Kim","doi":"10.29026/OEA.2021.200077","DOIUrl":"https://doi.org/10.29026/OEA.2021.200077","url":null,"abstract":"MXene (Mn+1Xn) is an emerging class of layered two-dimensional (2D) materials, which are derived from their bulk-state MAX phase (Mn+1AXn, where M: early transition metal, A: group element 13 and 14, and X: carbon and/or nitrogen). MXenes have found wide-ranging applications in energy storage devices, sensors, catalysis, etc. owing to their high electronic conductivity and wide range of optical absorption. However, the absence of semiconducting MXenes has limited their applications related to light emission. Research has shown that quantum dots (QDs) derived from MXene (MQDs) not only retain the properties of the parent MXene but also demonstrate significant improvement on light emission and quantum yield (QY). The optical properties and photoluminescence (PL) emission mechanisms of these light-emitting MQDs have not been comprehensively investigated. Recently, work on light-emitting MQDs has shown good progress, and MQDs exhibiting multi-color PL emission along with high QY have been fabricated. The synthesis methods also play a vital role in determining the light emission properties of these MQDs. This review provides an overview of light-emitting MQDs and their synthesis methods, optical properties, and applications in various optical, sensory, and imaging devices. The future prospects of light-emitting MQDs are also discussed to provide an insight that helps to further advance the progress on MQDs.","PeriodicalId":19611,"journal":{"name":"Opto-Electronic Advances","volume":" ","pages":""},"PeriodicalIF":14.1,"publicationDate":"2021-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46920512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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}

引用次数: 34