Journal of Sol-Gel Science and Technology最新文献

{"title":"Effect of different substrates on the structural, morphological, electrical, and optical properties of β-Ga2O3 thin films deposited by the sol-gel spin coating method","authors":"Lobna Messeddek,&nbsp;Fatma Amraoui,&nbsp;Louiza Arab,&nbsp;Nouredine Sengouga","doi":"10.1007/s10971-024-06585-5","DOIUrl":"10.1007/s10971-024-06585-5","url":null,"abstract":"<div><p>β-Ga₂O₃ thin films were successfully deposited on sapphire, quartz, and silicon substrates using a sol-gel spin coating method. This study aims to investigate the influence of different substrates on the properties of β-Ga₂O₃ thin films. The properties of the films were analyzed using various techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM, TUNA), Fourier transform infrared (FTIR) spectroscopy, and ultraviolet-visible (UV-Vis) spectrophotometry. XRD analyses revealed that all deposited films exhibited a polycrystalline structure with a monoclinic β-phase, with the best crystallinity observed on the sapphire substrate, showing a crystallite size of 35.92 nm. SEM micrographs displayed a granular morphology with varying granule sizes. AFM (TUNA) analysis was used to examine surface morphology and current transport characteristics, showing that surface roughness increased from quartz to sapphire to silicon (2.94 nm, 4.8 nm, and 7.01 nm, respectively). Electrical resistivity increased in the order: quartz, silicon, and sapphire. The highest transmission, nearly 100% in the visible spectrum, was observed for the β-Ga₂O₃ film grown on the sapphire substrate, which also had a band gap of approximately 5.4 eV as evaluated from UV-Vis spectrophotometry.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 1","pages":"159 - 168"},"PeriodicalIF":2.3,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Designing an eco-friendly Co/MnS/S-g-C3N4 nanocomposites: revolutionizing photocatalytic dye degradation and antibacterial efficiency","authors":"Yasmeen Khan,&nbsp;Sajid Mahmood,&nbsp;Mohsin Javed,&nbsp;Sana Mansoor,&nbsp;Misbah Umar,&nbsp;Sammia Shahid,&nbsp;Ammar Zidan,&nbsp;Rabia Nawaz,&nbsp;Shahid Iqbal,&nbsp;Abd-ElAziem Farouk,&nbsp;Salman Aloufi,&nbsp;Hala M. Abdelmigid,&nbsp;Toheed Akhter","doi":"10.1007/s10971-024-06592-6","DOIUrl":"10.1007/s10971-024-06592-6","url":null,"abstract":"<div><p>This study utilized an eco-friendly, simple, and cost-effective co-precipitation method to synthesize pure MnS and a series of Co/MnS nanoparticles (NPs) with varying cobalt contents (2%, 4%, 6%, 8%, and 10%). Thiourea was calcined at 552 °C to prepare S-g-C₃N₄ (SCN) nanosheets. The optimal doped NPs were combined with S-g-C₃N₄ to create a series of nanocomposites (10%, 30%, 50%, 70%, and 90%). The materials band gap (Eg) values were determined using Tauc plots. Photodegradation of MB dye was conducted with a UV-Vis spectrophotometer. According to the best of our knowledge, Sulfur-doped graphitic carbon nitride (S-g-C₃N₄) has been used for the first time in combination with cobalt and manganese sulfide nanoparticles to synergistically enhance visible-light photocatalytic activity, enabling efficient degradation of a toxic organic dye methylene blue. Besides photocatalytic treatment, the antibacterial results reveal that (Co /MnS/ S-g-C₃N₄) effectively destroyed bacteria with a synergy effect among cobalt elements, MnS and S-g-C₃N₄. Results indicated that doping 6% cobalt into the MnS lattice enhanced photocatalytic oxidation/reduction. The highest photodegradation performance was observed in 6% Co/MnS@10% SCN nanocomposites, attributed to improved charge separation and reduced charge recombination. The synthesized nano-catalysts maintained significant degradation percentages even after three cycles. The structural morphologies of pure MnS, 6% Co/MnS, S-g-C₃N₄, and 6% Co/MnS@ 10% SCN nanocomposites were analyzed using XRD and FTIR. Kinetic studies of the prepared nanomaterials were conducted to determine their rate constants. The antibacterial performance of the best photocatalysts was tested against Bacillus subtilis and Escherichia coli. The results suggest that composite synthesis and doping enhanced the antibacterial activity of MnS, with the trend for antimicrobial activity being MnS &lt; 6% Co/MnS &lt; 6% Co/MnS@10% SCN.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 1","pages":"145 - 158"},"PeriodicalIF":2.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultra-facile synthesis of CuO nanoclusters with excellent antibacterial activity and their antimicrobial mechanism study","authors":"Guoqiang Yang,&nbsp;Ye Hong,&nbsp;Yimei Wang,&nbsp;Xuechao Shi,&nbsp;Shuxian Hou,&nbsp;Xinxin Liu,&nbsp;Yuxuan Wang,&nbsp;Fei Ge,&nbsp;Jun Wang","doi":"10.1007/s10971-024-06569-5","DOIUrl":"10.1007/s10971-024-06569-5","url":null,"abstract":"<div><p>It is well known that bacterial infections pose a great threat to human health and life, and the situation has intensified because of the emergence of drug-resistant bacteria, especially in the medical field, the number of deaths due to super-bacteria infections that result from antibiotic misuse continues to increase every year. Researchers have been working hard and trying to find a suitable method to fight against bacterial infections, however, there is still no effective method to fight drug-resistant bacterial infections. In this study, an ultra-facile strategy was built to synthesize Copper Oxide Nanoclusters (CuO NCs), that exhibited broad-spectrum bactericidal activity against common pathogenic Gram-positive and Gram-negative bacteria. The synthesized CuO NCs exhibited a cluster structure with good stability and biocompatibility. The antibacterial mechanism revealed that the synthesized CuO NCs can cause bacterial death in multiple ways, including disrupting the bacterial cell membrane and ablating the biofilm, inducing the generation of ROS, and leading to nucleic acid leakage of bacteria. CuO NCs are simple to synthesize, have strong antibacterial activity, and are expected to open new avenues of antibacterial activity in the severe antibiotic environment due to the combination of antibacterial mechanisms that make it difficult for bacteria to develop drug resistance quickly.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div><div><p>In this study, we designed and synthesized copper oxide nanoclusters (CuO NCs) with favorable biosafety and stability for combating bacterial infection problems. The material possesses several advantages that including: (1) CuO NCs are synthesized in a straightforward and expeditious method. (2) CuO NCs have been demonstrated to possess good biocompatibility. (3) The synthesized CuO NCs exhibit broad-spectrum antimicrobial activity against <i>E. coli</i> and <i>S. aureus</i>, as well as for their drug-resistant strains. (4) The synthesized CuO NCs are capable of effectively removing biofilms formed by bacteria and promoting ROS generation, which disrupts the bacterial cell membrane, induces nucleic acid leakage, and ultimately cause the death of bacteria. This study employing an efficient strategy to synthesize CuO NCs with excellent broad-spectrum anti-bacterial ability, offering a promising method for addressing the growing challenge of multi-drug resistant bacteria.</p></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 1","pages":"132 - 144"},"PeriodicalIF":2.3,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation of Sn1-xCoxS nanocomposites as a catalyst for hydrogen production from sodium borohydride methanolysis","authors":"Zein K. Heiba,&nbsp;Ah Abd Ellatief,&nbsp;Mohamed Bakr Mohamed,&nbsp;A. M. El-naggar,&nbsp;Hassan Elshimy","doi":"10.1007/s10971-024-06596-2","DOIUrl":"10.1007/s10971-024-06596-2","url":null,"abstract":"<div><p>Samples of Sn_1-xCo_xS (x = 0, 0.025, 0.075, 0.1) were synthesized via the thermal evaporation approach under N₂ gas. The phase characterization of the synthesized samples was conducted employing HighScore plus software. The quantitative assessment of the resulting phases and their structure and microstructure parameters were determined using Rietveld refinement methodology. The SEM images validated the formation of two-dimensional sheets firmly stacked in building blocks, and the corresponding EDS analysis substantiated the incorporation of Co ions in the samples. FTIR and Raman spectroscopic techniques were utilized to corroborate the established phases, chemical composition and the inclusion of Co within the samples. The impact of doping on the absorption and reflectance features of Sn_1-xCo_xS samples was investigated. The substantial absorption that forms a plateau in the visible range suggests that all samples possess the capability for effective utilization of visible light. In the UV and visible regions, the sample with x = 0.025 revealed the highest absorbance, while in the IR region, the sample with x = 0.1 displayed the peak absorbance value. The lowest optical band gap energy values (1.15 and 3.38 eV) were obtained at x = 0.075. The influence of nano Sn_1-xCo_xS samples on the rate of hydrogen generation through the utilization of sodium borohydride (NaBH₄) is explored. Sample containing 10% Co exhibits the highest generation rate at 59382 mL min⁻¹g⁻¹.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 1","pages":"123 - 131"},"PeriodicalIF":2.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142941104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing glass surface hydrophobicity: the role of Perfluorooctyltriethoxysilane in advanced surface modification","authors":"Hossein Khojasteh,&nbsp;Mohammad-Peyman Mazhari,&nbsp;Kamran Heydaryan,&nbsp;Peyman Aspoukeh,&nbsp;Shahab Ahmadiazar,&nbsp;Samir Mustafa Hamad,&nbsp;Dilshad Shaikhah","doi":"10.1007/s10971-024-06593-5","DOIUrl":"10.1007/s10971-024-06593-5","url":null,"abstract":"<div><p>This study presents a novel approach to fabricate self-cleaning, superhydrophobic coatings on glass surfaces and photovoltaic cells. Using a cost-effective spray-coating technique, superhydrophobic glass surfaces were developed incorporating modified SiO₂ nanoparticles (NPs), synthesized via a simple sol–gel method. Silylating agents, Poly(dimethylsiloxane) (PDMS) and Perfluorooctyltriethoxysilane (PFOS), were used for the modification, resulting in enhanced surface roughness and hydrophobicity. The study extensively characterizes the analytical techniques such as Fourier transform infrared spectroscopy (FT-IR), atomic force microscopy (AFM), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and contact angle measurements. Modified NPs with PFOS showed a significant improvement in hydrophobic properties, with water contact angles of 144.73° and sliding angles of 5°. The stability of these surfaces under various pH conditions was also evaluated. This research contributes valuable insights into the development of self-cleaning coatings for glass and photovoltaic cells, demonstrating the potential of superhydrophobic surfaces in practical applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"857 - 869"},"PeriodicalIF":2.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Role of chelating agents on the sol-gel synthesis of bismuth ferrite nanoparticles","authors":"Kokkiligadda Jhansi,&nbsp;Parasuraman Swaminathan","doi":"10.1007/s10971-024-06588-2","DOIUrl":"10.1007/s10971-024-06588-2","url":null,"abstract":"<div><p>Bismuth ferrite (BiFeO₃) possesses multifunctional properties pertaining to its unique crystal structure. This study presents a comprehensive investigation on the role of different chelating agents on the low temperature, sol-gel synthesis of bismuth ferrite (BFO) nanoparticles (NPs). The sol-gel process utilizes precursors (iron nitrate and bismuth nitrate), solvent (ethylene glycol), catalyst (nitric acid), and the chelating agent. In this work, different chelating agents, such as acetic acid (AA), citric acid (CA), ethylenediaminetetraacetic acid (EDTA), glycine (GLY), tartaric acid (TA), and urea are evaluated for their influence on the phase purity and morphological features of the synthesized BFO. The NPs are characterized using various techniques such as x-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area analysis, UV-Vis-NIR spectroscopy, and vibrating sample magnetometry (VSM). Among all the chelating agents, TA is found to be the most suitable candidate for BFO synthesis. Pure BFO NPs of average crystallite size 20.8 nm, 24.8 m²/g surface area, and 1.91 eV optical bandgap are obtained after the calcination of the BFO-TA gel. The results are attributed to the easy gelation capability of TA due to the formation of a well-organized heterometallic polynuclear network during the gelation process. High magnetic saturation of 6.72 emu/g and squareness ratio of 0.26 of BFO-TA NPs implies a weak ferromagnetic nature. These results demonstrate a promising route to synthesize pure BFO, which given its multiferroic nature can be used for many applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"846 - 856"},"PeriodicalIF":2.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, electrical, and thermal properties of Ba-substituted B(Pb)SCCO superconductors prepared by sol-gel method","authors":"Firas Salim Abed,&nbsp;Lamia K. Abbas","doi":"10.1007/s10971-024-06568-6","DOIUrl":"10.1007/s10971-024-06568-6","url":null,"abstract":"<div><p>In this study, some physical properties of BSCCO superconductors have been investigated. The effects of Ba substitution in Bi_1.7Pb_0.3Sr_2-yBa_yCa₂Cu₃O_10+δ superconductor synthesized by the sol-gel method on the structural, thermal, and superconducting properties were identified. X-ray diffraction patterns display the dominant Bi-2223 high-temperature phase (HTP) mixed with the Bi-2212 low-temperature phase (LTP) in all samples. Variations in lattice parameters (<i>a, b</i> and <i>c</i>) significantly affect sample properties such as lattice volume, <i>c/a</i> ratio, and molecular weight (w). The highest percentage of HTP% appeared at y = 0.1 Ba content. Transmission Electron Microscopy (TEM) displays the formation of rod-like structures with nanoscale lengths. The Ba substitution ratio significantly determines the lattice dimension and oxygen content, affecting the prepared superconductor’s transition temperature (Tc). Thermogravimetric analysis (TGA) and differential thermal analysis (DTA) show the changes in mass loss and shifting in decomposition temperatures correlated with the Ba substitution rate. The optimal ratio of Ba was at y = 0.1, which exhibits the highest HTP percentage of 73.07% and the highest <i>T</i>_<i>c</i> of 113.5 K, suggesting improved superconducting properties.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"837 - 845"},"PeriodicalIF":2.3,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterizations of SrMnO3 with rGO nanosheets (SMO-rGO) in energy-related applications","authors":"Mishkat Majeed,&nbsp;Abdelaziz Gassoumi,&nbsp;Saeed D. Khan,&nbsp;Khursheed Ahmad,&nbsp;Aman M. Aslam Hanaish","doi":"10.1007/s10971-024-06560-0","DOIUrl":"10.1007/s10971-024-06560-0","url":null,"abstract":"<div><p>A crucial aspect of an oxygen evolution reaction is the improvement of electrocatalysts in an alkaline solution. Owing to their highly intrinsic activity and porous nature, perovskites (ABO₃) served as potential catalysts for OER. Transition-metal-oxides such as SrO₂, MnO₂, FeO, Co₃O₄ and NiO are considered potential catalysts for OER; strontium and manganese base oxides are efficient and have low cost. These catalysts have gained massive attention because of their structure, morphology and polyvalency. Herein, the crystalline perovskite SrMnO₃-rGO was fabricated using the hydrothermal method and analyzed using different physical and electrochemical characterizations. Different physical techniques were applied to study crystal structure, morphology and lattice vibration. The scanning electron microscopic analysis confirmed the homogeneous and small-sized structure of pristine SrMnO₃ and SrMnO₃-rGO composite. Moreover, composite showed a greater surface area (68 m² g⁻¹) according to the Brunauer Emmett Teller analysis. Then, the developed material was observed to determine stability, Tafel slope and overpotential. Further, the electrochemical characteristics of nickel foam (NF) are also analyzed which displays an overpotential of 378 mV and a Tafel value (80 mV dec⁻¹). In comparison, the prepared SrMnO₃-rGO composite showed an overpotential (198 mV) at standard current density (10 mA cm⁻²) and Tafel plot (37 mV dec⁻¹) with higher durability (30 hours) at 4000^th CV cycles. EIS was used to analyze the material’s resistance, which showed minimum R_ct (0.3 Ω) for composite. The present study expands perovskite-oxides with rGO performance as a catalyst, making it highly efficient for OER electrocatalysts. It can be applied at an industrial scale in the future.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"826 - 836"},"PeriodicalIF":2.3,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced uniformity of zirconia coating for high power lasers via solvent replacement and PEG-doping","authors":"Wenjie Hu,&nbsp;Ce Zhang,&nbsp;Nini Li,&nbsp;Shengli Wu,&nbsp;Yao Xu","doi":"10.1007/s10971-024-06586-4","DOIUrl":"10.1007/s10971-024-06586-4","url":null,"abstract":"<div><p>Zirconia coating has a lot of promise when it comes to enhancing the optical performance and laser-induced damage threshold (LIDT) of the mirror in laser systems. In this work, a high LIDT ZrO₂ coating was created using the sol-gel spin coating technique. The anhydrous ethanol solvent was substituted with alcohol ether solvent, and the spin coating technique was employed to achieve a macro homogeneous and flawless ZrO₂ coating. Additionally, organic polymer polyethylene glycol (average Mn 200, PEG200) doping was used to achieve the uniform ZrO₂ coating with LIDT. ZrO₂-PEG composite coatings with consistent LIDT and exceptional optical properties were created. Alcohol ether solvents helped the sol produce a more homogeneous gel coating on the substrate, as demonstrated by the ZrO₂ coating microscope pictures. The LIDT with a 0.5 wt.% PEG200 content was the most uniform. PEG200 organic molecules were able to alter the link state of the ZrO₂ particles. The macroscopic mechanical characteristics of the coatings revealed that the hardness and elastic modulus of the ZrO₂-PEG composite coating were mostly influenced by the PEG200 content. When the PEG200 content was 0.3 wt.%, the hardness and elastic modulus of the ZrO₂-PEG composite coating were the lowest with the highest of the LIDT at 39.25 ± 3.13 J/cm² (@ 1064 nm, 11 ns, 1 mm²).</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"790 - 800"},"PeriodicalIF":2.3,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polyfluorene incorporation for superior performance and band gap reduction: enhancing Cs2AgBiBr6 double perovskite solar cells","authors":"Asad Ullah,&nbsp;Wasif ur Rehman,&nbsp;Muhammad Iftikhar Khan,&nbsp;N. S. Abd EL-Gawaad","doi":"10.1007/s10971-024-06582-8","DOIUrl":"10.1007/s10971-024-06582-8","url":null,"abstract":"<div><p>Lead-free halide double perovskites (LFHDPs) based on Cs₂AgBiBr₆ are a good replacement for traditional lead-based LBPs due to their chemical stability and lack of toxicity. Double perovskite Cs₂AgBiBr₆-based solar cells have limited efficiency due to a large band gap, suggesting polyfluorene (PF) replacement as a workable solution to enhance their optical and photovoltaic characteristics. PF incorporation-induced crystal structural changes, as demonstrated by peak position shifts in X-ray diffraction. The UV–Vis spectroscopy, and solar simulator tests, were used to study the effect of PF on Cs₂AgBiBr₆. Optical examination reveals a decrease in <i>E</i>_g, leading to improved light absorption in the visible spectrum. By adding PF to their lattices, we effectively give the weakly luminous Cs₂AgBiBr₆ double perovskite robust red luminescence. The Cs₂Ag_0.95PF_0.05BiBr₆ solar cell has demonstrated a notable enhancement in performance. In that order, its enhanced fill factor, short-circuit current, and open-circuit voltage are 0.81, 5.73 mA cm⁻², and 0.93 V. Power conversion efficiency (PCE) has improved from 3.75% to 4.26%. About 13.60% of efficiency is increased by PF incorporation. The study identifies Cs₂Ag_0.95PF_0.05BiBr₆ as a high-performance material for solar applications and addresses issues with film formation. Our objective is to advance environmentally friendly solar technologies by enhancing efficiency, with future research focusing on interfacial engineering, specifically optimizing electron and hole transport layers.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"112 3","pages":"814 - 825"},"PeriodicalIF":2.3,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}