Next Materials最新文献_第2页

Thermal storage properties of NiTiCu shape memory alloys with different phase transition behaviors 具有不同相变行为的镍钛铜形状记忆合金的蓄热性能

Next Materials Pub Date : 2025-03-11 DOI: 10.1016/j.nxmate.2025.100577

Chenduo Zuo, Lijing Zheng, Shichao Yang, Bo Li, Hu Zhang

{"title":"Thermal storage properties of NiTiCu shape memory alloys with different phase transition behaviors","authors":"Chenduo Zuo, Lijing Zheng, Shichao Yang, Bo Li, Hu Zhang","doi":"10.1016/j.nxmate.2025.100577","DOIUrl":"10.1016/j.nxmate.2025.100577","url":null,"abstract":"<div><div>The development of thermal energy storage and thermal management technologies based on phase change materials (PCM) represents a significant opportunity for regulating energy supply and demand, and realizing sustainable development. Recent studies have demonstrated the efficacy of shape memory alloys as a solid-solid phase change material. In order to investigate the effect of phase change behavior on thermal storage performance, Ni<sub>50-x</sub>Ti<sub>50</sub>Cu<sub>x</sub> (x = 20, 22.5, 25, 27.5, 30 at%) alloys with one-step phase change and Ni<sub>40+x</sub>Ti<sub>50-x</sub>Cu<sub>10</sub> (x = -1, 0, 1 at%) alloys with two-step phase change are comparatively analyzed. The focus was on the thermophysical properties of the two series of alloys, such as density, specific heat capacity and thermal conductivity, as well as the phase transition behavior, microstructure and thermal cycle stability studies. The findings demonstrate that, in comparison to conventional organic and inorganic phase change materials, the two alloys display superior thermal storage characteristics, including higher density and enhanced thermal conductivity, as well as superior figure of merit (FOM) that are significantly superior to those of conventional phase change materials. In comparison, considering the phase transition temperature, FOM and thermal cycling stability, one-step phase transition alloys have better overall thermal performance than two-step phase transition alloys, which demonstrates great promise for applications in areas such as efficient thermal energy storage, rapid thermal cycling thermal management.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100577"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of golden polyaniline and interpretation with a Lorentz model

Next Materials Pub Date : 2025-03-11 DOI: 10.1016/j.nxmate.2025.100582

Hiromasa Goto

{"title":"Preparation of golden polyaniline and interpretation with a Lorentz model","authors":"Hiromasa Goto","doi":"10.1016/j.nxmate.2025.100582","DOIUrl":"10.1016/j.nxmate.2025.100582","url":null,"abstract":"<div><div>This report details the methods for synthesizing polyaniline (PANI) with a golden reflective thin layer. The preparation of PANI with golden color involves two-step processes. First, nuclei of fine particles are prepared in a first-step before the chemical oxidative reaction. Subsequent chemical oxidative polymerization occurs in the presence of these particles with ammonium persulfate as a second-step. As polymerization reaction proceeds, the color of the solution changed to light blue, golden, copper, and metallic purple. The golden-colored film formed during polymerization was transferred onto a glass substrate to obtain a thin film. This PANI thin film exhibited a reflection spectrum identical to that of real metallic Au. The reflected color appeared golden, while the transmitted color was green or purple. The golden reflection was attributed to the Lorentz interpretation, which relies on the wavelength-dependent dielectric constant. This golden color is due to the combined effect of the red reflection and the polished surface of the PANI film. The inter-band transitions in the near-infrared–visible range of thus prepared PANI film contributed to its high reflectance across the red–green spectrum, which is unlikely to be related to the plasma oscillations of free electrons in Au. Note that treatment with NH<sub>4</sub><sup>+</sup> for dedoping of PANI, characterized by a purple metallic reflection color (final color in the polymerization), changes to the golden reflection. This phenomenon can be described as a redox-driven gold chromic effect.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100582"},"PeriodicalIF":0.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A facile ultrasound-assisted synthesis and DFT evaluation of 3D hierarchical tin disulfide nanoflowers

Next Materials Pub Date : 2025-03-08 DOI: 10.1016/j.nxmate.2025.100579

Bayu Tri Murti , Athika Darumas Putri , Ma’rifatun Izati , Mazaya Sulaekhah , Ching-Yun Chen , Po-Kang Yang

{"title":"A facile ultrasound-assisted synthesis and DFT evaluation of 3D hierarchical tin disulfide nanoflowers","authors":"Bayu Tri Murti , Athika Darumas Putri , Ma’rifatun Izati , Mazaya Sulaekhah , Ching-Yun Chen , Po-Kang Yang","doi":"10.1016/j.nxmate.2025.100579","DOIUrl":"10.1016/j.nxmate.2025.100579","url":null,"abstract":"<div><div>Tin disulfide (SnS<sub>2</sub>), one of the 2D transition metal chalcogenide families, has recently received tremendous attention due to its stack geometry, precisely controllable structure and properties, tunable bandgap, and biocompatibility enabling a wide range of applications in sensors, supercapacitors, and flexible electronics. In this study, 3D hierarchical SnS<sub>2</sub> nanoflower (f-SnS<sub>2</sub>) was synthesized <em>via</em> simple, versatile, and green ultrasound treatment at ambient temperature. The indirect ultrasound was applied with a frequency of 40 kHz. The product was examined with optical imaging, particle size and zeta potential analyzer, SEM, and EDX, resulting in homogenous material distribution and microstructural characteristics of as-synthesized f-SnS<sub>2</sub>. The chemical composition and crystallographic information of f-SnS<sub>2</sub> were characterized by XRD, Raman spectroscopy, and HR-TEM. In addition, their electronic bandgap and active-site distribution were elucidated through DMol3-based density-functional calculations. These results demonstrated the successful synthesis of f-SnS<sub>2</sub> in facile and reagent-less laboratory settings as well as the electrostatic potential distribution at edge-active sites. The Monte Carlo adsorption study of SnS<sub>2</sub> towards toxic and pollutant gases (H<sub>2</sub>, CO<sub>2</sub>, and CO) revealed that the material has great potential for gas sensing applications.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100579"},"PeriodicalIF":0.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ constructing LiOH∙H2O on GaLaZr precursor via spray drying to synthesize Li6.4Ga0.2La3Zr2O12 powder material

Next Materials Pub Date : 2025-03-08 DOI: 10.1016/j.nxmate.2025.100580

Zhihao Guo , Xiaobao Zhang , Huan Zhao , Yiyang Xiao , Shiang Liang , Ning Wang , Juanyu Yang , Xiaowei Huang

{"title":"In-situ constructing LiOH∙H2O on GaLaZr precursor via spray drying to synthesize Li6.4Ga0.2La3Zr2O12 powder material","authors":"Zhihao Guo , Xiaobao Zhang , Huan Zhao , Yiyang Xiao , Shiang Liang , Ning Wang , Juanyu Yang , Xiaowei Huang","doi":"10.1016/j.nxmate.2025.100580","DOIUrl":"10.1016/j.nxmate.2025.100580","url":null,"abstract":"<div><div>Garnet Li<sub>6.4</sub>Ga<sub>0.2</sub>La<sub>3</sub>Zr<sub>2</sub>O<sub>12</sub> (LGLZO) solid-state electrolyte is widely considered as a promising candidate for solid-state lithium batteries. However, the production of LGLZO powder material under real circumstances faces the challenges of production instability, safety hazards and huge energy consumption concerns. Here in this work, a novel method to synthesize cubic LGLZO powder material by in-situ constructing LiOH∙H<sub>2</sub>O on GaLaZr precursor is developed. By virtue of spray drying, a continuous nano LiOH∙H<sub>2</sub>O layer with low crystallinity is successfully coated on the surface of the GaLaZr precursor particles. Revealed by 2D Raman mapping and TEM, the intimate contact and uniform mixing have been realized between LiOH∙H<sub>2</sub>O and GaLaZr precursor. Synthesis temperature of cubic LGLZO without clear secondary phases is lowered as 850 °C. The total ionic conductivity at 303 K of LGLZO is determined to be 1 × 10<sup>−3</sup> S cm<sup>−1</sup> with an activation energy of 0.24 eV while the electronic conductivity is characterized to 1.9 × 10<sup>−8</sup> S cm<sup>−1</sup>. This work enriches the synthesis method of LGLZO powder material and is expected to facilitate its safe and stable scaling-up production for solid-state lithium batteries.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100580"},"PeriodicalIF":0.0,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study of manganese substitutions in hydroxyapatite using density functional theory methods: Optical and magnetic properties

Next Materials Pub Date : 2025-03-07 DOI: 10.1016/j.nxmate.2025.100583

Vladimir Bystrov , Ekaterina Paramonova , Leon Avakyan , Svetlana Makarova , Natalia Bulina

{"title":"Study of manganese substitutions in hydroxyapatite using density functional theory methods: Optical and magnetic properties","authors":"Vladimir Bystrov , Ekaterina Paramonova , Leon Avakyan , Svetlana Makarova , Natalia Bulina","doi":"10.1016/j.nxmate.2025.100583","DOIUrl":"10.1016/j.nxmate.2025.100583","url":null,"abstract":"<div><div>Being the mineral component of the bone tissue, hydroxyapatite (HAP) is widely used in medicine for the bone tissue restoration. The crystal structure of HAP is very flexible and easily integrates various ions, which affects the properties of HAP. This paper presents the data for modeling the Mn-HAP lattice with various Mn/Ca substitutions obtained using calculations of the density functional theory. Experimental data on the synthesis of Mn-HAP by the mechanochemical method are also presented. The calculated and experimental data show good agreement: the unit cell parameters and volume decrease with increasing Mn/Ca substitution. These results on the behavior of structural parameters are similar to the results obtained for Mg/Ca substitutions in Mg-HAP. However, there are significant differences in the changes in the electronic and optical properties for these substituents. Additional electronic energy levels Ei were detected inside the band gap Eg of Mn-HAP, while Mg-HAP did not have energy levels inside the band gap, only the width of the Eg changed. Depending on the concentration of Mn, the photoexcitation energy changes, and its effective value Eg* becomes less than the band gap Eg in the unsubstituted HAP. The arisen magnetic properties of Mn-HAP are proportional to the amount of Mn introduced and energy levels Ei, filled by spin-up electrons. The formation energy of Mn/Ca substitution depends on the position and concentration of Mn. It was found that substitution is more preferable for the Ca2 position.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100583"},"PeriodicalIF":0.0,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143577722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental data-driven efficient exploration of the composition and process conditions of Li-rich NASICON-type solid electrolytes

Next Materials Pub Date : 2025-03-06 DOI: 10.1016/j.nxmate.2025.100574

Hayami Takeda , Kento Murakami , Yudai Yamaguchi , Hiroko Fukuda , Naoto Tanibata , Masanobu Nakayama , Takaaki Natori , Yasuharu Ono , Naohiko Saito

{"title":"Experimental data-driven efficient exploration of the composition and process conditions of Li-rich NASICON-type solid electrolytes","authors":"Hayami Takeda , Kento Murakami , Yudai Yamaguchi , Hiroko Fukuda , Naoto Tanibata , Masanobu Nakayama , Takaaki Natori , Yasuharu Ono , Naohiko Saito","doi":"10.1016/j.nxmate.2025.100574","DOIUrl":"10.1016/j.nxmate.2025.100574","url":null,"abstract":"<div><div>LiZr<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> has garnered widespread interest as a solid electrolyte for all-solid-state batteries. However, its Li ionic conductivity remains insufficient for practical use. Although attempts have been made to improve the Li ionic conductivity by doping with cations and controlling the synthesis conditions, the exploration space is vast, and optimisation remains challenging. In this study, the amount of dopants and heating conditions for Li<sub>1+x+2y</sub>Ca<sub>y</sub>Zr<sub>2-y</sub>Si<sub>x</sub>P<sub>3-x</sub>O<sub>12</sub> co-doped with Ca<sup>2+</sup> and Si<sup>4+</sup> were optimised via experimental synthesis, evaluation, and Bayesian optimisation (BO) cycles. The BO technique suggests the next experimental samples in each cycle and reduces the number of experimental cycles by almost 80 % compared with an exhaustive search. In addition, the experimental results were subjected to machine-learning regression analysis to analyse the factors affecting the Li-ion conductivity.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100574"},"PeriodicalIF":0.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Additive-free hydrothermal synthesis of SnS2 nanostructures and its enhanced photocatalytic and photoelectrochemical performance under visible solar light

Next Materials Pub Date : 2025-03-06 DOI: 10.1016/j.nxmate.2025.100569

Devanshi Zala, Abhijit Ray

{"title":"Additive-free hydrothermal synthesis of SnS2 nanostructures and its enhanced photocatalytic and photoelectrochemical performance under visible solar light","authors":"Devanshi Zala, Abhijit Ray","doi":"10.1016/j.nxmate.2025.100569","DOIUrl":"10.1016/j.nxmate.2025.100569","url":null,"abstract":"<div><div>Tin (IV) sulfide (SnS<sub>2</sub>) is an inexpensive direct band gap semiconductor and layered structure with great potential in photovoltaic and photocatalytic applications. Among other sulfides of tin (<em>e.g.</em>, SnS, Sn<sub>2</sub>S<sub>3</sub> <em>etc.</em>), SnS<sub>2</sub> is thermodynamically more stable than others. However, the development of the cost-effective, high-yield, and additive-free synthesis of SnS<sub>2</sub> nanostructures with enriched photocatalytic properties remains a challenge. Herein, we report the additive-free hydrothermal synthesis of SnS<sub>2</sub> nanosheets in a non-aqueous medium. The nanostructures and film grown on FTO substrate were annealed at 250°C in a nitrogen atmosphere to obtain more compact and highly crystalline nanosheets. The photocatalytic performance of the nanostructures is evaluated by the photo-degradation of Methylene Blue dye under simulated solar light. A 98 % dye degradation is achieved within 60 min under solar visible light with 5 mg/ 50 ml SnS<sub>2</sub> photocatalyst present in the dispersion. The enhanced photocatalytic activities of the annealed SnS<sub>2</sub> nanostructures are attributed to their novel quasi-two-dimensional morphologies and superior semiconducting properties tuned by thermal treatment.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100569"},"PeriodicalIF":0.0,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development and characterization of ethosomes of Acacia senegal for improved topical treatment of breast cancer

Next Materials Pub Date : 2025-03-05 DOI: 10.1016/j.nxmate.2025.100556

Sunil T. Galatage , Arehalli S. Manjappa , Kameswara Rao Sankula , Sameer J. Nadaf , Nagineni Sudarshan Rao , Sushma N , Sailaja Gunnam , P. Shyamsundar , Rahul J. Kadam , K. Gourisankar , Potti Lakshmanarao , Mallikarjuna Reddy Kaipu

{"title":"Development and characterization of ethosomes of Acacia senegal for improved topical treatment of breast cancer","authors":"Sunil T. Galatage , Arehalli S. Manjappa , Kameswara Rao Sankula , Sameer J. Nadaf , Nagineni Sudarshan Rao , Sushma N , Sailaja Gunnam , P. Shyamsundar , Rahul J. Kadam , K. Gourisankar , Potti Lakshmanarao , Mallikarjuna Reddy Kaipu","doi":"10.1016/j.nxmate.2025.100556","DOIUrl":"10.1016/j.nxmate.2025.100556","url":null,"abstract":"<div><h3>Background</h3><div>The quest to improve the effectiveness of anti-breast cancer medicines has diverted the researchers to explore a topical administration of drugs onto the breast. The different parts of <em>Acacia senegal</em> plant (ASP) have showed promising anticancer effects but with marred efficacy. Present research was aimed to develop, optimize, and characterize ASP root and stem bark extract (ASPE)-loaded ethosomes (ASPE-ETH) as carriers for improved topical treatment of breast cancer. Ethosomes were formulated and optimized using 3<sup>2</sup> factorial design. Optimized ASPE-ETH was evaluated for vesicle size, zeta potential, <em>in vitro</em> skin permeation, cytotoxicity, cellular uptake and live deal cell assay <em>etc</em>.</div></div><div><h3>Results</h3><div>ASPE-ETH appeared as unilamellar nano-vesicles (219 ± 7 nm) with nearly round in shape and had zeta potential of 32.1 ± 2.43 mV. ASPE-ETH demonstrated significant (p < 0.01) <em>in vitro</em> cytotoxicity (IC<sub>50</sub>: 47.68 ± 1.83 µg/mL) than ASPE (184.3 ± 3.68 µg/mL) against MCF-7 Cells. Compared to ASPE, ASPE-ETH treatment caused apoptosis of large proportion of cancer cells. The above results could be correlated to the increased cell uptake of ASPE-ETH as shown by <em>in vitro</em> cell uptake study. Furthermore, the <em>in-vitro</em> skin permeation study results revealed enhanced penetration of ASPE-ETH into the deeper layers of the skin.</div></div><div><h3>Conclusion</h3><div>The study results revealed that ASPE-ETH could be used as a potential alternative treatment approach to conventional chemotherapy. However; further <em>in vivo</em> animal studies are required to establish its efficacy in the treatment of breast cancer.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100556"},"PeriodicalIF":0.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient photocatalytic degradation of industrial dyes using SnWO4 for wastewater treatment

Next Materials Pub Date : 2025-03-05 DOI: 10.1016/j.nxmate.2025.100578

M.A. Bukhari , Syed Muhammad Zubair Shah Bukhari , M.I. Khan

{"title":"Efficient photocatalytic degradation of industrial dyes using SnWO4 for wastewater treatment","authors":"M.A. Bukhari , Syed Muhammad Zubair Shah Bukhari , M.I. Khan","doi":"10.1016/j.nxmate.2025.100578","DOIUrl":"10.1016/j.nxmate.2025.100578","url":null,"abstract":"<div><div>This work described an in-depth comparative study of photocatalytic potential of Tin Tungsten oxide that synthesized by sol-gel and hydrothermal methods for degrading dyes from water, hydrogen production, and investigating the differences in their properties by applying advanced characterizing techniques. XRD confirmed the crystal structures, SEM described their morphologies, FT-IR and UV-Vis showed the existence of SnWO<sub>4</sub> functional bonding and optical properties. Optical absorption capabilities, surface area, and carrier mobility effect the photocatalytic activities and water splitting. SnWO<sub>4</sub>-SG showed good results during water splitting and hydrogen production and SnWO<sub>4</sub>-SG method often yields materials with higher crystallinity and fewer defects, facilitating improved charge carrier mobility crucial for photocatalytic applications. Surface properties are also positively influenced, as sol-gel process modified surface hydroxyl groups and active sites, enhancing reactant adsorption and promoting better electron-hole separation. Over five consecutive cycles, SnWO<sub>4</sub> showed above 90 % efficiency of degradation.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100578"},"PeriodicalIF":0.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive physical and chemical properties of sulfurized Bi2S3 films prepared by CBD process

Next Materials Pub Date : 2025-03-04 DOI: 10.1016/j.nxmate.2025.100566

V. Gopala Krishna , G. Phaneendra Reddy , N. Revathi , K.T. Ramakrishna Reddy

{"title":"Comprehensive physical and chemical properties of sulfurized Bi2S3 films prepared by CBD process","authors":"V. Gopala Krishna , G. Phaneendra Reddy , N. Revathi , K.T. Ramakrishna Reddy","doi":"10.1016/j.nxmate.2025.100566","DOIUrl":"10.1016/j.nxmate.2025.100566","url":null,"abstract":"<div><div>Bismuth sulfide (Bi<sub>2</sub>S<sub>3</sub>) is one of the novel semiconductors that has gained significant interest in recent years for the development of solar photovoltaics. The present work reports a comprehensive analysis of the physical and chemical properties of chemical bath deposited (CBD) Bi<sub>2</sub>S<sub>3</sub> films upon sulfurization in relation to sulfurization temperature. The as-grown Bi<sub>2</sub>S<sub>3</sub> films were subjected to sulfurization at temperatures ranging from 250 °C to 400 °C for a duration of one hour. X-ray diffraction patterns indicated the (130) plane as the predominant orientation for all sulfurized layers, which exhibited the orthorhombic crystal structure. Films prepared at 350 °C showed large crystallites with minimum lattice strain and dislocation density. Raman spectra exhibited three major peaks that correspond to the A<sub>g</sub> and B<sub>1</sub><sub>g</sub> vibrational modes of Bi<sub>2</sub>S<sub>3</sub> with a space group of Pbnm. The films exhibited a rough surface morphology that increased with increasing sulfurization temperature. Energy dispersive spectroscopy study confirmed the nearly stoichiometric composition of Bi and S, whereas the X-ray photoelectron spectroscopy analyses revealed the presence of Bi<sup>3+</sup> and S<sup>2</sup><sup>−</sup> oxidation states. With increasing sulfurization temperature, the optical band gap values decreased from 1.66 eV to 1.37 eV, which closely aligns with optimal absorber layer requirements. Hall effect measurements revealed p-type conductivity, with the lowest resistivity value 0.24 Ω.cm at T<sub>s</sub> = 350 °C. The Bi<sub>2</sub>S<sub>3</sub> films sulfurized at 350 °C exhibited good structural, morphological, optical, and electrical properties that are highly suitable for absorber layers in thin-film solar cells in a cost-effective manner.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"8 ","pages":"Article 100566"},"PeriodicalIF":0.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0