H. Reinhold, Ulf Mikolajczak, H. Borchert, Jürgen Parisi, Dorothea Scheunemann
{"title":"Preparation and Structural Characterization of Thin Films of CuInS2 by Sintering Colloidally Synthesized Nanoparticles at Moderate Temperature","authors":"H. Reinhold, Ulf Mikolajczak, H. Borchert, Jürgen Parisi, Dorothea Scheunemann","doi":"10.1002/pssa.202200855","DOIUrl":"https://doi.org/10.1002/pssa.202200855","url":null,"abstract":"Copper indium disulfide nanoparticles continue attracting attention as absorber material in light harvesting devices. The preparation of thin films by deposition of this material from colloidal solution remains challenging. Typically, colloidal semiconductor nanoparticles are surrounded by long organic ligand molecules which are required to stabilize the particles during synthesis. A common way to obtain conductive thin films is the development of ligand exchange procedures that need to be applied prior to film deposition. However, in the case of copper indium disulfide nanoparticles, appropriate procedures are still missing. Therefore, an alternative approach is investigated herein. Colloidal copper indium disulfide nanoparticles are synthesized and deposited on substrates. Instead of applying a ligand exchange procedure, thermal removal of the ligands and sintering of the inorganic film are explored. Results on the preparation of the nanoparticle films, their structural investigation, and conductivity measurements are reported.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74140012","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":"Comparative Performance Evaluation for 1.2–10kV Conventional and Superjunction GaN Current Aperture Vertical Electron Transistors","authors":"M. Torky, Yanzhen Zhao, Panagiotis Lazos, T. Chow","doi":"10.1002/pssa.202300305","DOIUrl":"https://doi.org/10.1002/pssa.202300305","url":null,"abstract":"The performance potentials and limits for GaN current aperture vertical electron transistors with conventional, doped, and natural polarization superjunction (PSJ) drift layers at 1.2–10 kV breakdown voltage (BV) ratings are quantitatively compared. The static and dynamic performance parameters for each device are simulated and extracted. The specific on‐resistance RON,sp and specific total charge QT,sp (defined as the sum of specific gate charge QG,sp and specific drain–source charge QDS,sp) are extracted from Medici technology computer‐aided design simulations representing both the static and dynamic performance respectively. Moreover, a developed figure‐of‐merit (FoM) (RON,sp · QT,sp) is used to quantitively compare the performance of these field‐effect transistors in the range of BV ratings. Compared to the doped superjunction (DSJ) and conventional CAVETs, natural PSJ CAVET exhibits 1%–60% and 70%–99% reduction in RON,sp, while it is 100 to 1000× reduction in QT,sp, at BV between 1.2 and 10 kV respectively. Simultaneously, 22%–80% and 80%–99% reduction in performance FoM respectively are found.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86670692","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}
Tobias L. Karschuck, Stefan-Wolfgang Schmidt, Stefan Achtsnicht, A. Poghossian, Patrick H. Wagner, M. Schöning
{"title":"Multiplexing system for automated characterization of a capacitive field‐effect sensor array","authors":"Tobias L. Karschuck, Stefan-Wolfgang Schmidt, Stefan Achtsnicht, A. Poghossian, Patrick H. Wagner, M. Schöning","doi":"10.1002/pssa.202300265","DOIUrl":"https://doi.org/10.1002/pssa.202300265","url":null,"abstract":"In comparison to single‐analyte devices, multiplexed systems for a multianalyte detection offer a reduced assay time and sample volume, low cost, and high throughput. Herein, a multiplexing platform for an automated quasi‐simultaneous characterization of multiple (up to 16) capacitive field‐effect sensors by the capacitive–voltage (C–V) and the constant‐capacitance (ConCap) mode is presented. The sensors are mounted in a newly designed multicell arrangement with one common reference electrode and are electrically connected to the impedance analyzer via the base station. A Python script for the automated characterization of the sensors executes the user‐defined measurement protocol. The developed multiplexing system is tested for pH measurements and the label‐free detection of ligand‐stabilized, charged gold nanoparticles.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86029733","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":"Effect Mechanism of Sc Addition and T6 Heat Treatment on Precipitated Phase and Mechanical Properties of Al‐Cu‐Mn Alloy","authors":"Pan Tang, Kailai Yu, Luman Qin, Saisha Huang","doi":"10.1002/pssa.202300190","DOIUrl":"https://doi.org/10.1002/pssa.202300190","url":null,"abstract":"The microstructure and mechanical properties of cast Al‐Cu‐Mn alloy influenced by various Sc additions (viz. 0.1, 0.2, 0.3, 0.4, and 0.5 wt%) are investigated. It is found that the grain size of α‐Al and the area proportion of the second phase are decreased with the addition of Sc. In addition, the morphology of the precipitated phase in Al‐Cu‐Mn alloy also evolves at different stages, and the solidification temperature range and initial enthalpy change of the alloy are changed, resulting in the formation of a variety of second‐phase containing Sc. Owing to the grain refinement and precipitation strengthening effects, the hardness of as‐cast alloys is better than T6 alloys. Moreover, it is observed that when the Sc content is 0.3%, the mechanical properties of the as‐cast Al‐Cu‐Mn alloy are the minimum, and the Al‐Cu‐Mn alloys after T6 heat treatment are the maximum. These results confirm that the mechanical properties improvement effect of the as‐cast Al‐Cu‐Mn alloy is greater than that of the T6 heat treatment Al‐Cu‐Mn alloy with the addition of Sc. Meanwhile, the Orowan strengthening mechanism is found to have lost its dominant position.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79422861","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":"Enhanced photocatalytic degradation of antibiotics by Ag/BiOI/g‐C3N4 composites","authors":"Ting Li, M. Ma, Junhai Wang, Qiang Li, Yunwu Yu, Qianqian Zou, Xinran Li, Xiaoyi Wei, Tingting Yan, Yulan Tang","doi":"10.1002/pssa.202300261","DOIUrl":"https://doi.org/10.1002/pssa.202300261","url":null,"abstract":"As an efficient, safe, and environmentally friendly technology, semiconductor photocatalysis has been widely used in the removal of antibiotics from wastewater. In this work, a novel Ag/BiOI/g‐C3N4 composite photocatalytic material, BiOI/g‐C3N4, g‐C3N4, and BiOI are prepared as the photocatalysts. The morphologies, chemical properties, and photocatalytic performances of the photocatalysts are characterized using scanning electron microscope, transmission electron microscope, X‐ray diffraction, X‐ray photoelectron spectroscopy, Fourier‐transform infrared spectrometer, ultraviolet–visible spectroscopy (UV–Vis) diffuse reflectance spectra, and photoluminescence spectra. In addition, tetracycline hydrochloride (TC) and ceftiofur sodium aqueous solutions are used to simulate wastewater and the photocatalytic degradation performances of the photocatalysts are investigated and compared under visible light. Compared to g‐C3N4, BiOI, and BiOI/g‐C3N4, the Ag/BiOI/g‐C3N4 demonstrates superior performance, increasing the removal rates of TC and ceftiofur sodium to 85.6% and 90.2%, respectively. The photocatalytic mechanism of the Ag/BiOI/g‐C3N4 may involve the promotion of the visible light–harvesting ability and inhibition of the recombination of photogenerated electron/hole pairs. Furthermore, the primary active groups in the system are identified as superoxide radicals (·O2−) and hydroxyl radicals (·OH). Herein, some valuable insights into the development of innovative photocatalytic materials are offered for the effective removal of antibiotics from water.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80358341","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}
Jyoti Singh, Sachin Singh, V. Srivastava, Sadanand, R. Yadav, P. Lohia, D. K. Dwivedi
{"title":"Performance Enhancement of PbS‐TBAI Quantum Dot Solar Cell with MoTe2 as Hole Transport Layer","authors":"Jyoti Singh, Sachin Singh, V. Srivastava, Sadanand, R. Yadav, P. Lohia, D. K. Dwivedi","doi":"10.1002/pssa.202300275","DOIUrl":"https://doi.org/10.1002/pssa.202300275","url":null,"abstract":"Novel solar power technologies are constantly evolving and improving, and this is seen as a potential way to meet the increasing demand for electricity and energy on a global scale. Quantum dot solar cells (QDSCs) are one of the most optimistic third‐generation solar cells. Because of the superior qualities, such as its size, tuneable bandgap, high stability, and extremely low cost, quantum dots (QDs) have drawn a lot of attention in photovoltaic applications for highly effective solar cells. Herein, WO3 is utilized as the electron transport layer (ETL), MoTe2 as the hole transport layer (HTL), and lead sulfate treated with tetrabutylammonium iodide (PbS‐TBAI) as the QD absorber layer. Overall optimization still represents an obstacle to raise the efficiency of QDSC. Temperature, series–shunt resistance, and absorber layer thickness are optimized, and further analysis is done for overall optimization on the contour plot of electron affinities of HTL and ETL. For all aspects of simulation work, the SCAPS‐1D simulator program is employed. Fill factor 85.96%, open‐circuit voltage 923.7 mV, short‐circuit density 38.61 mA cm−2, and power conversion efficiency 30.66% are the values of the optimized performance parameters. The improved high efficiency of the proposed device can pave for the fabrication of QDSC.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88301567","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}
Chunyan Li, Wenzheng Zhai, Lin Tian, Yu-Dong Lu, Jianshu Zhai, Yonghui Wang, Xiaocheng Li, S. Kou
{"title":"Adsorption and Degradation of Methylene Blue Aqueous Solution by Fe‐based Amorphous Alloy","authors":"Chunyan Li, Wenzheng Zhai, Lin Tian, Yu-Dong Lu, Jianshu Zhai, Yonghui Wang, Xiaocheng Li, S. Kou","doi":"10.1002/pssa.202300297","DOIUrl":"https://doi.org/10.1002/pssa.202300297","url":null,"abstract":"Fe‐based amorphous ribbons with the brand name 1K101 can adsorb methylene blue (MB) solution. The adsorption reaction is multilayer adsorption, in which chemical adsorption plays a major role. There are also some processes like physical adsorption, liquid phase diffusion, and internal diffusion of particles. The adsorption reaction is exothermic and spontaneous, which is more favorable at low temperatures. During the adsorption process, the entropy value decreases, the degree of disorder and freedom of the solution decreases, and the structure also changes. What's more, H2O2, pH, ribbons's dosage, dye's concentration, and temperature affect the degradation performance of 1K101 on MB. Degradation reactions are mainly controlled by surface chemical reactions, including chemical reduction reactions and adsorption. When c(H2O2) is 15 mm, pH is 2, ribbons’ dosage is 0.9 g, c(MB) is 20 mg L−1, temperature is 338 K, the degradation effect is the best. The optimal conditions with lowest overall cost obtained under the orthogonal experiment are: c(H2O2) = 20 mm, pH = 2, ribbons's dosage = 0.7 g, c(MB) = 20 mg L−1, and T = 338 K. Overall, 1K101 amorphous ribbon can be utilized to treat MB solution, and its degradation effect is better than adsorption effect, which can provide new ideas for the reuse of waste amorphous ribbon and the treatment of azo dye wastewater.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75130385","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":"Hydrothermal Synthesis and Electrochemical Performance of Mesoporous La2CrMnO6 Double Perovskite for Energy Storage Applications","authors":"Anup Singh, Ajay Vasishth, Ajay Kumar","doi":"10.1002/pssa.202300198","DOIUrl":"https://doi.org/10.1002/pssa.202300198","url":null,"abstract":"Mesoporous La2CrMnO6 double perovskite is successfully synthesized using the hydrothermal technique, and characterized its physicochemical properties using X‐ray diffraction, X‐ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy, and transmission electron microscopy. The synthesized material exhibits a high surface area of 57.07 m2 g−1, providing more active sites for electrochemical charge storage. The electrochemical performance of the La2CrMnO6 as an electrode material is evaluated for the first time, which reveals an excellent specific capacitance of 1416 F g−1 at 1 A g−1 in a three‐electrode setup. Results suggest that mesoporous La2CrMnO6 double perovskite is a promising electrode material for electrochemical energy storage applications.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"2675 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78385215","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":"Production and Characterization of Magnetic‐Luminescent Fe3O4@ZnO:RE Composite Nanoparticles for Biomedical Application","authors":"F. Unal","doi":"10.1002/pssa.202300149","DOIUrl":"https://doi.org/10.1002/pssa.202300149","url":null,"abstract":"Magnetic‐luminescent composite nanoparticles (Fe3O4@ZnO:RE) with a core/shell structure are produced by a simple process. Magnetite nanoparticles (Fe3O4) are coated with rare‐earth‐doped zinc oxide (ZnO). Core/shell structure is confirmed by high‐resolution transmission electron microscopy (HR‐TEM) analysis. X‐ray diffraction analysis results show that cubic magnetite Fe3O4 and hexagonal ZnO phases originate from the core and the shell, respectively. Hexagonal ZnO and cubic magnetite Fe3O4 phases belonging all nanoparticles are confirmed by HR‐TEM benefiting the lattice fringe. All the nanoparticles present superparamagnetic behavior. Under 532 nm excitation, they release the emission in the visible and infrared regions. They exhibit blue–green emission attributed to 2H11/2–4I15/2, 4S3/2–4I15/2 transitions, red emission attributed to 4F9/2–4I15/2 transitions, and infrared emission ascribed to 4F9/2–4I15/2, 2F7/2–2F5/2 transitions. Above the 0.2mol% dopant ratio, the luminescence intensity starts to decrease because of the concentration quenching. The produced nanoparticles are promising for bioimaging and magnetic hyperthermia treatment, due to their magnetic and luminescent properties, orientation to the target area, and their presence in the target area can be determined.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82028847","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}
M. Jalili, H. Ghanbari, R. Malekfar, Reyhaneh Goodarzi
{"title":"Laser Ablation of the Flexible Graphite: A New Way to Create a Graphene‐Based Flexible Substrate","authors":"M. Jalili, H. Ghanbari, R. Malekfar, Reyhaneh Goodarzi","doi":"10.1002/pssa.202300144","DOIUrl":"https://doi.org/10.1002/pssa.202300144","url":null,"abstract":"The morphological and structural changes of an ablated flexible graphite in air and acetone ablation environments are studied here. From field emission scanning electron microscopy images, vertically aligned graphene nanosheets are found on the surface of ablated target in acetone. Measured ablation depth values for the ablated target in water are generally higher than those for the ablated target in air. X‐ray diffraction analysis reveals that the (002) peak position and full‐width at half‐maximum of this peak in the ablated flexible graphite in the air increase. The gap between the highest occupied molecular orbitals and the lowest unoccupied molecular orbitals, i.e., the bandgap of the ablated target, indicating that the energy bandgap of the ablated target in two ablation media increased compared to the nonirradiated target. Raman analysis from different points of the surface of the ablated target in both ablation media demonstrates the presence of bulk defects on the ablated target in the air, instead the edge defects are found for the ablated target in acetone. From Raman spectra, there are no single‐layer graphene nanosheets pinned on the surface of the target in acetone.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"71 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83685045","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}