Kota Mori, Y. Kurokawa, Sai Kiran Mavileti, S. Pandey
{"title":"Design, Synthesis and Photophysical Characterization of Multifunctional Far‐red Squaraine Dyes for Dye‐Sensitized Solar Cells","authors":"Kota Mori, Y. Kurokawa, Sai Kiran Mavileti, S. Pandey","doi":"10.1002/pssa.202300254","DOIUrl":"https://doi.org/10.1002/pssa.202300254","url":null,"abstract":"Novel far‐red sensitive symmetrical squaraine dyes aiming towards multifunctional properties such as control of dye aggregation, promotion of molecular self‐assembly and introduction of electrolyte function by alkyl chain terminal modification were designed. Newly designed dye without terminal modification as reference (SQ‐5) along with iodine (SQ‐77) and imidazole (SQ‐79) alkyl terminal‐modified dyes were successfully synthesized, characterized, and subjected to detailed photophysical investigations. Iodine terminal modification (SQ‐77) led to enhanced molar extinction coefficient, dye aggregation, dye loading and binding strength on the TiO2 surface, which was found by just the opposite after the imidazole (SQ‐79) terminal modification. Demonstration of nearly similar photovoltaic performance by SQ‐77 and SQ‐79 in the absence of iodine and chenodeoxycholic acid validates their multi‐functional role as electrolyte function and dye aggregation prevention, respectively, in addition to their main role as photosensitizer. DSSCs fabricated with SQ‐5 as a sensitizer showed efficient far‐red to NIR photo‐sensitization and photon harvesting with short‐circuit current density, open‐circuit voltage and fill factor of 11.98 mA/cm2, 0.61 V, and 0.57, respectively leading to a photoconversion efficiency of 4.2 % under simulated solar irradiation.This article is protected by copyright. All rights reserved.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84392682","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}
Karuppiah Kathiresan, N. R. Ramanujam, Karuppiah Poovendran, S. Taya
{"title":"A Theoretical Approach for Detecting the Chikungunya Virus Based on 1D Photonic Crystals","authors":"Karuppiah Kathiresan, N. R. Ramanujam, Karuppiah Poovendran, S. Taya","doi":"10.1002/pssa.202300362","DOIUrl":"https://doi.org/10.1002/pssa.202300362","url":null,"abstract":"In the current study, it is aimed at using defective 1D photonic crystals (PCs) to detect the chikungunya virus in various healthy and diseased blood samples composed of plasma, platelets, red blood cells, and uric acid. The proposed PC structure has 14 periods and consists of repeating SiC and SiO2 layers with a central cavity layer. When blood samples are injected into the cavity layer, the transmittance spectrum is examined theoretically by using a transfer matrix approach to determine how the wavelength of the defect mode changes. The cavity layer is 540 and 648 nm thick, and the work is carried out at different angles of incidence. The performance of the sensor is quantified by computing the sensitivity, figure of merit, quality factor, and limit of detection values of the sensor for various blood samples. The maximum sensitivity is 1205.5 nm RIU−1 and detection limit of the order is 10−6 in this proposed work. A lower value of sensor resolution of 0.01218 is also achieved. Such a high‐performance sensor is suitable for biosensing applications with better sensing capabilities.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74574075","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}
Fei Liu, Guangwei Wang, Zixiang Huang, Juan Tian, Deliang Wang
{"title":"Enhanced Performance of CdTe Solar Cells with Sb2Se3 Back Contacts","authors":"Fei Liu, Guangwei Wang, Zixiang Huang, Juan Tian, Deliang Wang","doi":"10.1002/pssa.202300426","DOIUrl":"https://doi.org/10.1002/pssa.202300426","url":null,"abstract":"The barrier at CdTe/metal interface severely limits the efficiency of CdTe photovoltaic devices. Herein, the effectiveness of a thermally evaporated Sb2Se3 buffer layer as a back contact in CdTe solar cells is investigated, revealing a significant enhancement in device performance. Through optimization of Sb2Se3 thickness, a remarkable increase in the open‐circuit voltage (VOC) to 804 mV is achieved, leading to a substantial efficiency improvement of 12.84% when compared to the Au‐only back contact device. X‐ray photoelectron spectroscopy (XPS) reveals a well‐matched energy band alignment at CdTe/Sb2Se3 interface, confirming favorable conditions for hole transport. To further enhance the device performance, Cu doping is implemented in the Sb2Se3 film, resulting in additional improvements to the VOC and fill factor (FF) of the Cu‐doped configuration to 819 mV and 72.35%, respectively, while also enhancing the overall efficiency to 14.3%.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76649034","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. Kneissl, J. Christen, A. Hoffmann, B. Monemar, T. Wernicke, Ulrich T. Schwarz, Å. Haglund, M. Meneghini
{"title":"Nitride Semiconductors","authors":"M. Kneissl, J. Christen, A. Hoffmann, B. Monemar, T. Wernicke, Ulrich T. Schwarz, Å. Haglund, M. Meneghini","doi":"10.1002/pssa.202300484","DOIUrl":"https://doi.org/10.1002/pssa.202300484","url":null,"abstract":"","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72517085","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}
Shengxian Wei, Fen E Hu, Li-ping Deng, Bao Yue, Yiming Cao, Xijia He, Yuanlei Zhang, Yanru Kang, K. Xu, Zhe Li
{"title":"Effect of Cu Doping on Phase Transition, Thermal Strain, and Thermal Expansion Property in Polycrystalline Ni50Mn23−xCuxGa27 Alloys","authors":"Shengxian Wei, Fen E Hu, Li-ping Deng, Bao Yue, Yiming Cao, Xijia He, Yuanlei Zhang, Yanru Kang, K. Xu, Zhe Li","doi":"10.1002/pssa.202300348","DOIUrl":"https://doi.org/10.1002/pssa.202300348","url":null,"abstract":"The influence of Cu doping on phase transition, thermal strain, and thermal expansion property of polycrystalline Ni50Mn23−xCuxGa27(x = 1, 3, 5, 6 and 7) alloys is investigated. The results show that with increasing Cu concentration, martensitic transformation gradually gets close to Curie transition. A magnetostructural transition (MST) is observed in samples with x = 6 and 7. Such MST can enhance magnitude of transformation strain. Besides, Ni50Mn23−xCuxGa27 alloys possess an isotropic, recoverable, and thermally stable thermal strain. Excitedly, Cu doping can effectively tune the phase transition, thermal strain, and thermal expansion properties of Ni50Mn23−xCuxGa27 alloys. Adjustable coefficients of thermal expansion from positive to negative are obtained by Cu‐doped Ni50Mn23−xCuxGa27 alloys. The average linear expansion coefficient (α) between −140.44 and −207.70 ppm K−1 is observed in samples with x = 6 and 7 for a narrow temperature span of 11–14 K. When the temperature span is about 72 K (x = 6) and 73 K (x = 7), which is the largest temperature span observed in Ni–Mn–Ga‐based alloys recently, the α values decrease to about −36 ppm K−1. These findings are beneficial for manipulating the thermal expansion property of Ni–Mn–Ga–Cu alloys and their multifunctional applications.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89788897","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 Study on Thermal and Laser Sintering of Silver Nanocubes and Silver Nanoplates","authors":"Zhu Hui, X. Liu","doi":"10.1002/pssa.202200889","DOIUrl":"https://doi.org/10.1002/pssa.202200889","url":null,"abstract":"Compared with silver nanowires and silver nanospheres, silver nanocubes and silver nanoplates with larger curvature structures like sharp vertices and edges have great potential in optical applications. In general, the controllable joining of silver nanomaterials has become an effective way to change the electrical and optical properties of silver nanomaterials in recent years. However, urgent research on the controllable joining of silver nanocubes or silver nanocubes is still rarely reported. After being thermal treated at 250 °C for 8 min, a good joining among silver nanocubes can be obtained without significant damage to the cubic structure. For laser sintering, with the increase of laser energy input, silver nanocubes gradually transform to spherical particles. Joining among few particles can be observed when silver nanocubes are scanned by 5 W of laser at 1.0 mm s−1. Obvious joining among silver nanocubes can be obtained by thermal treating at 300 °C for 5 min and laser scanning at 7 W at 0.2 mm s−1. Thermal heating is more suitable for forming different degrees of connection between silver nanocubes or between silver nanocubes, while laser treatment is suitable for changing the shape of silver nanocubes or silver nanocubes without obvious connection.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90949569","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}
Y. Koshiba, I. Sugimoto, S. Horike, Tatsuya Fukushima, K. Ishida
{"title":"Fabrication and Local Electrical Characterization of p–n Junction Copper Phthalocyanine Nanorods","authors":"Y. Koshiba, I. Sugimoto, S. Horike, Tatsuya Fukushima, K. Ishida","doi":"10.1002/pssa.202300243","DOIUrl":"https://doi.org/10.1002/pssa.202300243","url":null,"abstract":"","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72509282","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}
Chengyan Gu, Zhenzhong Zhang, Yukai Zhao, F. Zhao, Yana Liu, Youwei Zhang
{"title":"Effect of Heat Treatment on the Crystallization Behavior of Amorphous Manganese Dioxide and its Electrochemical Properties in Zinc‐Ion Battery Cathodes","authors":"Chengyan Gu, Zhenzhong Zhang, Yukai Zhao, F. Zhao, Yana Liu, Youwei Zhang","doi":"10.1002/pssa.202300329","DOIUrl":"https://doi.org/10.1002/pssa.202300329","url":null,"abstract":"Herein, amorphous manganese dioxide (AMO) is prepared by the liquid‐phase coprecipitation method, the effect of heat treatment temperature on the microstructure, and phase composition of AMO and the electrochemical properties as cathode materials for aqueous Zn–MnO2 batteries are investigated. The results show that the AMO didn't crystallize at 250 °C, but its structure stability increases. When the temperature is 350 and 400 °C, part of the AMO crystallizes into rod‐shaped nano‐α‐MnO2 crystals. At 540 °C, the products crystallize into nano‐α‐MnO2 crystals. Continuing to increase the temperature to 650 °C, the structural stability of the products is further improved. Heat treatment leads to reduced specific surface area and porosity of the material, which in turn leads to reduced specific capacity and cycling stability. In addition, the heat‐treated products show a sharp drop in capacity during the discharge process; this was because the volume change caused by the irreversible phase change of the electrode material is difficult to release in the anisotropic crystal, resulting in the collapse of the structure. This study shows that unheated AMO is better than heat‐treated AMO as a cathode material for aqueous Zn–MnO2 battery cathode material in terms of overall performance and cost.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76176488","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}
Jen-Wei Huang, Po-Hsun Chen, Tsung-Han Yeh, Chih-Cheng Yang
{"title":"Investigating the Effects of Sulfur Treatment on Material Characteristics and Resistance Switching Device Applications with Supercritical Fluid Technique","authors":"Jen-Wei Huang, Po-Hsun Chen, Tsung-Han Yeh, Chih-Cheng Yang","doi":"10.1002/pssa.202300453","DOIUrl":"https://doi.org/10.1002/pssa.202300453","url":null,"abstract":"A sulfur treatment based on the supercritical fluid (SCF) treatment is proposed and its effect on the silver (Ag)‐doped material and device is investigated. The sulfur treatment is achieved by mixing sulfur powder with carbon dioxide (CO2) in a reaction chamber under high pressure (3000 psi) at low reacting temperature (120 °C). Based on the experimental results, the SCF sulfur treatment can dramatically change the Ag‐doped SiO2 (Ag:SiO2) thin‐film characteristics, including surface morphology, crystallization, chemical bonding, and mole elements in accordance with the analyses of various materials. In addition, the SCF sulfur treatment is also applied to the Ag:SiO2‐based device to verify the resistance switching (RS) properties. Based on electrical measurement results, the device with the SCF sulfur treatment exhibits better performance. The graduate RS behaviors also exhibit multilevel switching in both set and reset processes, which proves its possible applications of the proposed SCF sulfur treatment. In addition, the current fitting method is used to verify the RS properties to illustrate the carrier transportation characteristics of the Ag:SiO2‐based device with the SCF sulfur treatment.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76213188","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}
S. K. Sethy, K. J. Sankaran, Prasanth Gupta, Joseph Palathinkal Thomas, Ajit Dash, John V. Kennedy, Kam Tong Leung, Ken Haenen
{"title":"Microplasma Illumination Enhancement in N+P‐Co‐Ion‐Implanted Nanocrystalline Diamond Films","authors":"S. K. Sethy, K. J. Sankaran, Prasanth Gupta, Joseph Palathinkal Thomas, Ajit Dash, John V. Kennedy, Kam Tong Leung, Ken Haenen","doi":"10.1002/pssa.202300157","DOIUrl":"https://doi.org/10.1002/pssa.202300157","url":null,"abstract":"N‐ and P‐co‐ion implantation enhances the electrical conductivity of nanocrystalline diamond films to 6.9 s cm−1 and improves the microplasma illumination (MI) characteristics of the films to a low breakdown voltage of 340 V, large plasma current density of 6.3 mA cm−2 (@510 V) with plasma life‐time stability of 10 h. N ions induce nanographitic phases in the films and P ions lower the resistance at the diamond‐to‐Si interface together promoting the conducting channels for effective electron transport, consequently attaining the improved MI properties of the films.","PeriodicalId":87717,"journal":{"name":"Physica status solidi (A): Applied research","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90113721","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}