Current Applied Physics最新文献_第3页

Structural and optoelectronic analysis of a novel perylene diimide as a light-harvesting material for dye-sensitized solar cells 一种新型染料敏化太阳能电池光收集材料苝二亚胺的结构与光电分析

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-12 DOI: 10.1016/j.cap.2025.03.006

Twinkle Khanna , Subhrajit Konwar , Saloni Saloni , S.N.F. Yusuf , Pramod K. Singh , Geeta Durga

{"title":"Structural and optoelectronic analysis of a novel perylene diimide as a light-harvesting material for dye-sensitized solar cells","authors":"Twinkle Khanna , Subhrajit Konwar , Saloni Saloni , S.N.F. Yusuf , Pramod K. Singh , Geeta Durga","doi":"10.1016/j.cap.2025.03.006","DOIUrl":"10.1016/j.cap.2025.03.006","url":null,"abstract":"<div><div>Perylene diimides (PDIs) have emerged as an excellent n-type semiconductor substitute for fullerenes in energy devices. A novel PDI, N, N′-bis-(2-phenylethyl)-3,4,9,10-perylene bis(dicarboximide)(PDEA), was synthesized and its structure was thoroughly characterized using Fourier transforms infrared spectroscopy (FTIR), High-resolution mass spectroscopy (HRMS), Proton Nuclear magnetic resonance (<sup>1</sup>H NMR). The optical properties of the PDI were evaluated using UV–visible, and Photoluminescence (PL) spectroscopic techniques. The UV–Visible spectrum of PDEA exhibited a broad absorption band in the visible range (400–800 nm), with yellowish-green fluorescence emission under a UV lamp. The structure of PDEA was optimized using Density Functional Theory (DFT) with the B3LYP/6-31G (d, p) basis set, and its optoelectronic properties were evaluated in a variety of solvents of different polarities. Further, Cyclic Voltammetry (CV) was utilized to examine the electrochemical redox behaviour of PDEA in acetonitrile which was observed to be one-electron quasi-reversible. The as-synthesized PDEA was used to fabricate the DSSC and was found to exhibit a good photovoltaic performance with a fill factor (FF) of 72, an open-circuit voltage (V<sub>oc</sub>) of 0.52 V, a PCE (power conversion efficiency) of 0.63 %, and a Jsc (short circuit current density) of 1.67 mA/cm<sup>2</sup>. The above-mentioned characteristics of the PDEA may have applications in photovoltaics, fluorescence-based detectors, n-channel field-effect transistors, and other related areas.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 127-135"},"PeriodicalIF":2.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Synthesis and characterization of PVA/KC/NaYF4:Eu3+ composite fluorescent films PVA/KC/NaYF4:Eu3+复合荧光膜的合成与表征

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-12 DOI: 10.1016/j.cap.2025.03.005

Xiangyuan Duan, Shuyan Xu

{"title":"Synthesis and characterization of PVA/KC/NaYF4:Eu3+ composite fluorescent films","authors":"Xiangyuan Duan, Shuyan Xu","doi":"10.1016/j.cap.2025.03.005","DOIUrl":"10.1016/j.cap.2025.03.005","url":null,"abstract":"<div><div>Fluorescent composite films were prepared using polyvinyl alcohol (PVA) as the substrate and NaYF<sub>4</sub>:Eu<sup>3+</sup> phosphors and κ-carrageenan powder (KC) as the fillers by the casting method. The impact of incorporating NaYF<sub>4</sub>:Eu<sup>3+</sup> on the structural, morphological, mechanical property, thermal stability, and optical characteristics of PVA/KC films was examined. The incorporation of KC promoted the formation of hydrogen bonds between KC and PVA. Consequently, the water contact angle of the films increased by approximately 10°, indicating improved water resistance. Meanwhile, the incorporation of NaYF<sub>4</sub>:Eu<sup>3+</sup> increased the thermal stability of the films, with the temperature at 5 % mass loss rising by approximately 13 °C. Additionally, the mass retention at 600 °C improved by 3.47 %. Notably, the addition of NaYF<sub>4</sub>:Eu<sup>3+</sup> had a negligible effect on the transparency of the films while imparting fluorescent properties. Under UV excitation at 395 nm, the films exhibited maximum fluorescence intensity at 616 nm, indicating a significant fluorescence effect.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 136-144"},"PeriodicalIF":2.4,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Up-conversion phosphor LaCaGaO4: Er3+/Yb3+ for the optical temperature sensing and anti-counterfeiting 上转换荧光粉LaCaGaO4: Er3+/Yb3+用于光学温度传感和防伪

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-09 DOI: 10.1016/j.cap.2025.03.001

Shengyi Liu , Shang Gao , Duan Gao , Li Wang , Wenbin Song , Han Yin , Ying Zhu , Jingjing Zhang , Qianmiao Yu , Xin Chen

{"title":"Up-conversion phosphor LaCaGaO4: Er3+/Yb3+ for the optical temperature sensing and anti-counterfeiting","authors":"Shengyi Liu , Shang Gao , Duan Gao , Li Wang , Wenbin Song , Han Yin , Ying Zhu , Jingjing Zhang , Qianmiao Yu , Xin Chen","doi":"10.1016/j.cap.2025.03.001","DOIUrl":"10.1016/j.cap.2025.03.001","url":null,"abstract":"<div><div>Successfully synthesized LaCaGaO<sub>4</sub>: Er<sup>3+</sup> and LaCaGaO<sub>4</sub>: Er<sup>3+</sup>/Yb<sup>3+</sup> phosphors via high-temperature solid-state reactions and thoroughly investigated their up-conversion luminescence properties under 980 nm and 1550 nm excitation. X-ray diffraction analysis confirmed the phase purity of the materials, and up-conversion luminescence measurements demonstrated emissions in the visible and near-infrared regions, primarily at 530 nm, 550 nm, 670 nm, and 810 nm, corresponding to Er<sup>3+</sup> transitions. Mechanistic studies revealed that under 980 nm excitation, both green and red emissions are two-photon processes, while under 1550 nm excitation, these emissions are driven by three-photon processes. Co-doping with Yb<sup>3+</sup> enhanced luminescence intensity, with an increase in the red-to-green emission ratio as the Yb<sup>3+</sup> concentration increased. Furthermore, these materials exhibited excellent temperature sensing capabilities, with fluorescence intensity ratios from thermally coupled energy levels showing good agreement with the Boltzmann distribution. Maximum sensitivities S<sub>A</sub><sup>MAX</sup> of 0.00054 K<sup>-1</sup> (980 nm excitation) and 0.00632 K<sup>-1</sup> (1550 nm excitation) were achieved, highlighting their potential for applications in optical thermometry, color tuning, and anti-counterfeiting.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 84-97"},"PeriodicalIF":2.4,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Pedagogical approach to anomalous position and velocity 异常位置和速度的教学方法

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-09 DOI: 10.1016/j.cap.2025.03.003

Younsik Kim , Suk Bum Chung , Changyoung Kim

引用次数: 0

Enhancement of barrier protection of organic coatings with the incorporation of graphene oxide as a reinforcing filler 加入氧化石墨烯作为增强填料增强有机涂层的屏障保护

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-06 DOI: 10.1016/j.cap.2025.03.004

Sachin Sharma Ashok Kumar , K. Ramesh , S. Ramesh

{"title":"Enhancement of barrier protection of organic coatings with the incorporation of graphene oxide as a reinforcing filler","authors":"Sachin Sharma Ashok Kumar , K. Ramesh , S. Ramesh","doi":"10.1016/j.cap.2025.03.004","DOIUrl":"10.1016/j.cap.2025.03.004","url":null,"abstract":"<div><div>Graphene and its derivatives, such as graphene oxide (GO) are new materials with unique properties which have been widely employed as a reinforcing filler material in organic coatings. The superior properties of GO, such as its large surface area, surface wettability, stability, chemical resistance, and high mechanical strength, have resulted the GO material to be a promising additive in anti-corrosion coatings. On the other hand, due to the presence of oxygen-containing functional groups, the GO has exhibited high water dispersibility. In addition, the chemical functionalization that is facilitated by these functional groups on the GO surface resulted in the enhancement of dispersibility and corrosion protection performance. Hence, the GO-based polymer coatings have attracted significant attention globally especially in the corrosion industry. Although, the electrochemical characteristics of GO-polymer nanocomposite coatings have not been explored much. Therefore, in this study, a series of coatings were developed by incorporating various amounts of GO nanoparticles into the polymer matrix. These coatings were then coated on the steel substrates and the barrier protection performance of GO-based coatings was investigated using electrochemical impedance spectroscopy (EIS). In addition, the electrochemical activity was observed by determining the breakpoint frequencies (<span><math><mrow><msub><mi>f</mi><mi>b</mi></msub></mrow></math></span>) over a period of 90 days. The results revealed that the incorporation of GO nanoparticles significantly enhanced the corrosion protection performance of the coatings. The results demonstrated that the best corrosion resistance was achieved by the 0.5 % GO coating sample. Fourier transform infrared (FTIR) spectroscopy was employed to verify the chemical structure of the composite coatings.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 98-111"},"PeriodicalIF":2.4,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143620891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Self-annealing behavior of an Mg-Dy alloy processed by high-pressure torsion 高压扭转Mg-Dy合金的自退火行为

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-04 DOI: 10.1016/j.cap.2025.02.010

Siham Koriche , Abdelkader Khalfallah , Hiba Azzeddine , Thierry Baudin , François Brisset , Yi Huang , Terence G. Langdon

{"title":"Self-annealing behavior of an Mg-Dy alloy processed by high-pressure torsion","authors":"Siham Koriche , Abdelkader Khalfallah , Hiba Azzeddine , Thierry Baudin , François Brisset , Yi Huang , Terence G. Langdon","doi":"10.1016/j.cap.2025.02.010","DOIUrl":"10.1016/j.cap.2025.02.010","url":null,"abstract":"<div><div>An investigation was conducted to evaluate the microstructure, texture and microhardness of an Mg-0.4Dy (wt.%) alloy processed by high-pression torsion (HPT) for 15 turns and then self-annealed at ambient temperature for six years. Electron backscatter diffraction (EBSD) and Vickers microhardness were carried out near the centre, mid-radius and edge of each disc. The results show that self-annealing leads to a slight increase in the average grain size from 0.7 to 1 μm. The basal texture was retained at the centres and edges of the discs while the <em>C</em><sub><em>1</em></sub>-fiber vanished near the mid-radius of the self-annealed disc. The value of the microhardness remained constant along the radii of the discs but the dislocation density, originating from the geometrically necessary dislocations (GND), increased significantly after self-annealing due to the development of sub-grain boundaries with misorientations of 2°< θ < 5°. Based on these results, it is concluded that self-annealing of the HPT-processed Mg-0.4Dy alloy is controlled by a recovery process.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 41-48"},"PeriodicalIF":2.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Synthesis of Cu2O/ZnO fiber heterojunction networks for self-powered visible-light photodetectors with rapid response 快速响应自供电可见光探测器用Cu2O/ZnO光纤异质结网络的合成

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-03-04 DOI: 10.1016/j.cap.2025.03.002

Yiran Wang , Senzhuo Xing , Nan Zhang

{"title":"Synthesis of Cu2O/ZnO fiber heterojunction networks for self-powered visible-light photodetectors with rapid response","authors":"Yiran Wang , Senzhuo Xing , Nan Zhang","doi":"10.1016/j.cap.2025.03.002","DOIUrl":"10.1016/j.cap.2025.03.002","url":null,"abstract":"<div><div>The network-based self-powered photodetector features a large interfacial area, enhancing light absorption and charge carrier generation, along with its mechanical robustness, enabling integration into various applications. In this study, we propose a novel self-powered photodetector based on an AZO/ZnO/Cu<sub>2</sub>O/Ag network architecture, fabricated using electrodeposition and atomic layer deposition techniques. The fabricated photodetector exhibits a detection wavelength range extending from 390 nm to 780 nm at zero bias, covering the visible spectrum. With a maximum responsivity of 1.6 mA/W and a response time of 5 μs, the device showcases excellent sensitivity and rapid detection capabilities. X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), and optoelectronic performance testing were employed to analyze the operating mechanism of the photodetector. It was found that the spatial charge region formed at the interface between Cu<sub>2</sub>O and ZnO layers plays a crucial role in enabling the self-powered operation of the photodetector. Our work provides a new strategy for the development of high-performance network photodetectors.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 77-83"},"PeriodicalIF":2.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Exploring bismuth ferrite: Structural changes and future applications 探索铋铁氧体：结构变化和未来应用

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-23 DOI: 10.1016/j.cap.2025.02.007

Swarupamayee Nayak , Pratiksha Agnihotri , Jagadis Prasad Nayak , Charul Joshi , Radheshyam Rai

{"title":"Exploring bismuth ferrite: Structural changes and future applications","authors":"Swarupamayee Nayak , Pratiksha Agnihotri , Jagadis Prasad Nayak , Charul Joshi , Radheshyam Rai","doi":"10.1016/j.cap.2025.02.007","DOIUrl":"10.1016/j.cap.2025.02.007","url":null,"abstract":"<div><div>The review article provides a comprehensive quantitative analysis of bismuth ferrite (BiFeO<sub>3</sub>), focusing on its structural, electrical, and magnetic properties, as well as an extensive survey of the existing literature. Bismuth ferrite is a multifunctional material with significant potential for a range of technological applications, particularly in the fields of spintronics, energy harvesting, and memory devices. The review systematically examines various synthesis methods—including chemical vapor deposition, solid-state processes, sol-gel, and hydrothermal techniques—and their effects on the morphology, crystal structure, and overall properties of BiFeO<sub>3</sub>. The study highlights how specific fabrication techniques influence the material's ferroelectric and magnetic characteristics, exploring their implications for performance in diverse applications. By synthesizing findings from recent studies, this review aims to provide a quantitative understanding of how modifications to the material's structure impact its functionality, offering valuable insights for future advancements in the use of BiFeO<sub>3</sub> in advanced technologies.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 49-76"},"PeriodicalIF":2.4,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Tunable plasmon-induced transparency based on graphene metasurface structure for mid-infrared sensing applications 基于石墨烯超表面结构的可调谐等离子体诱导透明中红外传感应用

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-22 DOI: 10.1016/j.cap.2025.02.009

Tae-Han Kim, Sang Woo Kim, Bo Wha Lee

引用次数: 0

Enhanced Photoelectrochemical performance by rapid electron transfer in reduced graphene oxide/CaWO4 composite photoanode 还原氧化石墨烯/CaWO4复合光阳极的快速电子转移增强了光电化学性能

IF 2.4 4区物理与天体物理

Current Applied Physics Pub Date : 2025-02-18 DOI: 10.1016/j.cap.2025.02.006

H.N.M. Sarangika , E.G.O.D. Egodawaththa , H.M.B.I. Gunathilaka , V.P.S. Perera , S. Ghosh , C. Bhattacharya

{"title":"Enhanced Photoelectrochemical performance by rapid electron transfer in reduced graphene oxide/CaWO4 composite photoanode","authors":"H.N.M. Sarangika , E.G.O.D. Egodawaththa , H.M.B.I. Gunathilaka , V.P.S. Perera , S. Ghosh , C. Bhattacharya","doi":"10.1016/j.cap.2025.02.006","DOIUrl":"10.1016/j.cap.2025.02.006","url":null,"abstract":"<div><div>Scheelite oxides and their derivatives are renowned for their exceptional stability, high photocatalytic efficiency, and versatile structural design, positioning them as a promising category of semiconductor photocatalysts. In this study, Scheelite calcium tungstate (CaWO<sub>4</sub>) films were fabricated on fluorine-doped tin oxide (FTO) substrates using the chemical bath deposition (CBD), followed by calcination. Graphene oxide (GO) was independently synthesized via the Hummers' method and subsequently deposited onto the CaWO<sub>4</sub> films through electrophoretic deposition (EPD) to form reduced graphene oxide/CaWO<sub>4</sub> (rGO/CaWO<sub>4</sub>) composites. The incorporation of rGO was found to play a crucial role in enhancing electron transport within the rGO/CaWO<sub>4</sub> films. In photoelectrochemical (PEC) water splitting, the rGO/CaWO<sub>4</sub> demonstrated a remarkable photocurrent of 13 μA cm<sup>−2</sup> at 1 V, far exceeding the 0.4 μA cm<sup>−2</sup> achieved by pristine CaWO<sub>4</sub> under identical conditions. This 32.5-fold enhancement in photocurrent is attributed to the rapid electron transfer facilitated by the rGO in the composite structure.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"73 ","pages":"Pages 22-29"},"PeriodicalIF":2.4,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0