Applied Surface Science Advances最新文献

{"title":"Oxygen effect on the performance of β-Ga2O3 enhancement mode MOSFETs heteroepitaxially grown on a sapphire","authors":"Yueh-Han Chuang ,&nbsp;Fu-Gow Tarntair ,&nbsp;Tzu-Wei Wang ,&nbsp;Anoop Kumar Singh ,&nbsp;Po-Liang Liu ,&nbsp;Dong-Sing Wuu ,&nbsp;Hao-Chung Kuo ,&nbsp;Xiuling Li ,&nbsp;Ray-Hua Horng","doi":"10.1016/j.apsadv.2025.100711","DOIUrl":"10.1016/j.apsadv.2025.100711","url":null,"abstract":"<div><div>β-Ga₂O₃ is regarded as a promising candidate for next-generation high-power devices; however, the impact of material quality on device performance is significant and not yet well understood. In this study, β-Ga₂O₃ heteroepilayers were grown on c-plane sapphire using metalorganic chemical vapor deposition (MOCVD) at three different O₂ flow rates. Enhancement-mode β-Ga₂O₃ metal-oxide-semiconductor field-effect transistors (MOSFETs) were then fabricated with a gate-recessed process, incorporating a 5 µm gate field plate structure. Higher O₂ flow rates resulted in increased breakdown voltage. X-ray photoelectron spectroscopy analysis suggests that this improvement is due to reduced oxygen vacancies and minimized Al diffusion from the substrate. First-principle simulations further confirmed this phenomenon.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100711"},"PeriodicalIF":7.5,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129939","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}

{"title":"Enhanced photocurrent and responsivity of PbS quantum Dot/ZnO nanoparticle films with amine passivation","authors":"Po-Hsun Chen ,&nbsp;Nguyet.N.T. Pham ,&nbsp;Pei-Cheng Huang ,&nbsp;Yu-Sian Lin ,&nbsp;Chia-Tien Peng ,&nbsp;Cheng-Hsing Lin ,&nbsp;Chih-Ching Chang ,&nbsp;Hsueh-Shih Chen","doi":"10.1016/j.apsadv.2025.100705","DOIUrl":"10.1016/j.apsadv.2025.100705","url":null,"abstract":"<div><div>This study investigated a combination of PbS quantum dots (QDs) and ZnO nanoparticles (NPs) layers in photodiodes for photodetection. Oxygen vacancies in ZnO NPs have been known to be recombination trap sites, hindering carrier transportation. We used various amines to passivate the oxygen vacancy of ZnO NPs. It is found that ethanolamine (EA) is the most effective in reducing the surface oxygen vacancies of ZnO, exhibiting a five-fold increase in electron mobility, enhancing PbS QD photodiode responsivity to 278.8 A/W and achieving an external quantum efficiency (EQE) of 36,700% under bias, and increasing the detectivity ∼ 15.5 folds to 8.14 × 10¹² Jones compared with the pure ZnO device. This demonstrates the potential of amines as passivation agents to improve PbS photodiode performance with ZnO NPs as the electron transport layer (ETL).</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100705"},"PeriodicalIF":7.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130010","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}

{"title":"Single-ion gel-polymer electrolyte for improving the performances of Li-ion batteries","authors":"Radu Dorin Andrei ,&nbsp;Giorgian Cosmin Ungureanu ,&nbsp;Luisa Roxana Mandoc ,&nbsp;Soha Aldroubi ,&nbsp;Nicolas Louvain ,&nbsp;Julian Richard Tolchard ,&nbsp;Mihaela Buga","doi":"10.1016/j.apsadv.2025.100709","DOIUrl":"10.1016/j.apsadv.2025.100709","url":null,"abstract":"<div><div>Solid State Batteries (SSBs) combine the significantly higher energy density (&gt;450 Wh/kg) and enhanced safety required to expedite society's transition away from fossil fuels, making them the most potential \"next-gen\" chemistry for lithium-based batteries. However, issues with electrolyte performance at lower temperatures as well as issues with the effective deposition and stripping of metallic lithium anodes are now impeding their development. In this work, we suggest a completely new strategy to deal with these issues: creating a Solid Molecular Ionic Composite Electrolyte (SMICE), an entirely novel type of gel-polymer electrolyte. This new membrane exhibits outstanding ionic conductivity at room temperature (3.3 mS·cm^-1). Following electrochemical tests, the symmetric lithium cells demonstrated long-term cycling stability of approximately 650 h at 25 °C and 1000 h at 60 °C. In half-cell configuration the specific discharge capacity reaches a maximum of 164 mAh·g^-1 with a high retention of 95 % after 300 cycles, signifying the stability of SMICE membrane. These results reveal the proper compatibility between the SMICE membrane and the cell electrodes.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100709"},"PeriodicalIF":7.5,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130006","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}

{"title":"Emerging aero-semiconductor 3D micro-nano-architectures: Technology, characterization and prospects for applications","authors":"Veaceslav Ursaki ,&nbsp;Tudor Braniste ,&nbsp;Narcisa Marangoci ,&nbsp;Ion Tiginyanu","doi":"10.1016/j.apsadv.2025.100708","DOIUrl":"10.1016/j.apsadv.2025.100708","url":null,"abstract":"<div><div>Highly porous, ultra-lightweight materials are widely used in various applications. Aerogels based on both organic and inorganic components have been known for a long period of time as an important class of functional materials. However, a new subclass of ultra-porous inorganic materials prepared by using technologies different from those derived from a gel is nowadays emerging, thereby contributing to a significant expansion of their areas of application. In this review paper, highly porous semiconductor materials prepared on the basis of ZnO sacrificial templates consisting of 3D architectures built up from interconnected microrods, tetrapods or multipods, so called aero-semiconductors, are reviewed from the point of view of technologies applied for their preparation, properties and applications. For the purpose of comparison, other materials prepared on the basis of similar templates are discussed, such as aerographites and other highly porous inorganic nanomaterials and composites containing a semiconductor component. A special focus is put on their applications in sensors, electromagnetic shielding, light emission, microfluidics, microrobotics, biomedicine, photocatalysis and electrochemical applications.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100708"},"PeriodicalIF":7.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129938","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}

{"title":"Plasma Electrolytic Oxidation (PEO) coatings on aluminum alloy 2024: A review of mechanisms, processes, and corrosion resistance enhancement","authors":"Matteo Gamba ,&nbsp;Andrea Cristoforetti ,&nbsp;Michele Fedel ,&nbsp;Federica Ceriani ,&nbsp;Marco Ormellese ,&nbsp;Andrea Brenna","doi":"10.1016/j.apsadv.2025.100707","DOIUrl":"10.1016/j.apsadv.2025.100707","url":null,"abstract":"<div><div>AA2024, containing around 4% Cu and 1.5% Mg, has outstanding mechanical properties among the aluminum alloys, but poor corrosion resistance. Because of its substantial tensile strength, fatigue and wear resistance, it finds broad application in the aeronautical field. Its use, however, requires the application of a coating for ensuring adequate durability to the components. Plasma Electrolytic Oxidation (PEO) is a plasma-based coating process which has been object of growing interest in recent years because of its ability at producing thick and protective coatings by using simple, water-based electrolytes, thus reducing the environmental and safety risks presented by traditional anodizing processes. This is a promising technique for AA2024 coating, although it involves many different parameters, often interacting with each other. Thus, when optimizing it for this specific material, different effects should be considered, among which the main ones are the electrical input applied to the workpiece, the composition of the electrolytic solution and the presence of pre- or post-treatment.</div><div>In the present review the main features of the PEO coating of AA2024 are treated. The main process parameters are discussed and a complete description of the discharge mechanism and of the coating growth is given. Then, the properties of the PEO coatings grown upon AA2024 are treated, mainly from the point of view of corrosion resistance enhancement. Finally, some insights into the upscaling of PEO for its industrial application are given.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100707"},"PeriodicalIF":7.5,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129937","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}

{"title":"Electrolyte and electrolyte-additives for improved plasma electrolytic oxidation on magnesium alloys","authors":"Viswanathan S. Saji","doi":"10.1016/j.apsadv.2025.100700","DOIUrl":"10.1016/j.apsadv.2025.100700","url":null,"abstract":"<div><div>Plasma electrolytic oxidation (PEO) is a pivotal method to create a thick and adherent protective oxide layer on magnesium (Mg) alloys, significantly enhancing their wear and corrosion resistance. The functional oxide layers fabricated via PEO have diverse potential applications, including automobile, aerospace, machinery, biomedical, thermal protection, catalysis, and energy materials. The type and nature of the electrolyte and electrolyte additives used in PEO play a decisive role in shaping the morphology, compactness, porosity, composition, thickness, wear/corrosion resistance, mechanical properties, and other functionalities of the resulting layer. The in-situ integration of chemicals/particles into the PEO layer, facilitated by optimized electrolyte additives, is a well-established method for producing enhanced composite oxide layers. This potential for creating enhanced composite PEO oxide layers is a promising aspect of PEO technology, and this review explores the latest strategies in optimizing electrolyte and electrolyte additives for superior PEO layers in various applications.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100700"},"PeriodicalIF":7.5,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130005","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}

{"title":"High-performance composite anodes based on SBA-15 mesoporous silica modified with silicon, silicon oxide, titanium oxide, and germanium oxide for lithium-ion batteries","authors":"Radu Dorin Andrei ,&nbsp;Giorgian Cosmin Ungureanu ,&nbsp;Luisa Roxana Mandoc ,&nbsp;Violeta-Carolina Niculescu ,&nbsp;Jeremy Rodriguez ,&nbsp;Mihaela Ramona Buga ,&nbsp;Athanasios Tiliakos","doi":"10.1016/j.apsadv.2025.100699","DOIUrl":"10.1016/j.apsadv.2025.100699","url":null,"abstract":"<div><div>In this study, SBA-15 mesoporous silica was modified with silicon, silica, titania, and germania particles to prepare composite silica-based anodes for lithium-ion batteries. The materials and the ensuing anodes were extensively characterized at every stage of their synthesis and preparation (BET/BJH, XRD, SAXS, FTIR, SEM, EDX) and the electrochemical performances of the assembled composite anodes were audited by voltammetric and galvanostatic methods to determine their discharge capacities and coulombic efficiencies. The composite anodes, especially Ti/SBA-15 and Ge/SBA-15, displayed stable coulombic efficiencies and gradually increasing capacities with steady trends, with the Ti/SBA-15 anode reaching 240 mAh g^–1 and the Ge/SBA-15 one rising higher at 550 mAh g^–1 after 500 cycles, thus outperforming the Si/SBA-15 anode which, in contrast, reached the high mark of 550 mAh g^–1 within the first 50 cycles but continued with gradually diminishing performance and unstable efficiency. With indications of the underlying driving phenomenon pertaining to electrochemical grinding effects, our work encourages further investigations on the highly probable outcome of much increased lifetimes and higher performances for these types of composite anodes for lithium-ion batteries.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100699"},"PeriodicalIF":7.5,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130151","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}

{"title":"A DFT study of lithium intercalation and metallization on oxygen-vacancy containing TiO2(110)","authors":"J. Juan,&nbsp;M.G. Sandoval,&nbsp;P. Bechthold,&nbsp;E.A. González,&nbsp;P.V. Jasen","doi":"10.1016/j.apsadv.2025.100704","DOIUrl":"10.1016/j.apsadv.2025.100704","url":null,"abstract":"<div><div>We investigate the possible adsorption sites for Li on perfect and defective TiO₂(110) using DFT+U calculations. Two systems with an oxygen di-vacancy are generated and we test the diffusion and the effects of increasing the number of Li in the most stable configurations. The oxygen vacancy in the first and second layers facilitates the diffusion of Li. We found that Li migration is stopped at the bulk-like defect-free layers in the direction normal to the surface. The DOS of the lithiated system shows that the changes take place at the lower end of the conduction band. Li becomes Li⁺¹, and the charge density difference diagrams show the redistribution of charge to the neighboring atoms. When Li is intercalated at the (110) surface, the most important change occurs at the Fermi level (E_F) and is caused by the interaction between Ti 3d and Li 2s orbitals. When N-lithium (N = 1, 2, 3) is considered in the defective system, the bonding order of Li atoms increases with the amount of adsorbed alkali metal atoms. In the case of Li intercalation, the sum of the bond order of all atoms is higher than in the adsorbed case, while for the Li atom, it is almost twice as high. When more Lithium is considered, new Li-O bonds are formed. Ab initio molecular dynamics simulations (AIMD) are performed, to check the stability of the system. This study shows that Li adsorption, intercalation and diffusion is possible for a realistic TiO₂(110) surface.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100704"},"PeriodicalIF":7.5,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130009","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}

{"title":"Robust highly conductive patterns in flexible PEEK materials with either sp3 or sp2 dominant carbon phases produced by using ultrashort laser pulses","authors":"Ayesha Sharif ,&nbsp;Nazar Farid ,&nbsp;Yuhan Liu ,&nbsp;Mingqing Wang ,&nbsp;Robert G. Palgrave ,&nbsp;Gerard M O'Connor","doi":"10.1016/j.apsadv.2025.100697","DOIUrl":"10.1016/j.apsadv.2025.100697","url":null,"abstract":"<div><div>This study reports ultrashort direct laser writing of highly conductive patterns on 50 µm thick flexible polyether-ether-ketone (PEEK) using two distinctive, electrically conductive regimes confirmed by XPS; an <em>sp³</em>-carbon dominant regime with minor <em>sp²</em> contribution (Phase-I) and an <em>sp²</em>-carbon dominant regime with a small <em>sp³</em> contribution (Phase-II). Phase-I is produced using a single laser scan strategy with a narrow fluence window. Phase-II is optimally produced using four sequential laser scan passes, each with a specific fluence. The rationale for the first pass was to disrupt carbon atoms, the second and third exposures were to gently modify this disrupted phase, and the fourth pass was to anneal the final structure. No characteristic graphene peaks were observed in Raman spectra for Phase-I, however, this phase surprisingly showed higher conductivity when compared with Phase-II. Raman peaks for graphene were observed for single laser scan passes at higher laser fluences with the onset of surface damage. In Phase-II, PEEK was laser scanned multiple times to transform into <em>sp²</em> graphene integrated in the form of laser induced periodic surface structures. The lowest sheet resistance obtained was 9.60 Ω/□ and 11.53 Ω/□ corresponding to an electrical conductivity of ∼4.33 × 10³ S/m and 4.17 × 10³ S/m for Phase-I and Phase-II, respectively. The reported low-fluence process is significant for direct laser writing of conductive structures on polymers providing a precise and controlled manipulation of carbon configuration to produce components which are not impacted by mechanical friction.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100697"},"PeriodicalIF":7.5,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130007","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}

{"title":"Improving the charge transport of perovskite nanocrystal light-emitting-diodes through Benzylammonium ligand exchange","authors":"Minsik Gong ,&nbsp;Dong Gyu Lee ,&nbsp;Gwang Yong Shin ,&nbsp;Yun Seop Shin ,&nbsp;Donghwan Yun ,&nbsp;Yunhye Jeong ,&nbsp;Sang Wook Park ,&nbsp;Chan Beom Park ,&nbsp;Yung Jin Yoon ,&nbsp;Sung Yong Bae ,&nbsp;Yun-Hi Kim ,&nbsp;Jin Young Kim ,&nbsp;Tae Kyung Lee ,&nbsp;Gi-Hwan Kim","doi":"10.1016/j.apsadv.2025.100698","DOIUrl":"10.1016/j.apsadv.2025.100698","url":null,"abstract":"<div><div>Lead halide perovskite nanocrystals (LHP NCs) have emerged as promising materials for next-generation display area due to their exceptional luminescence efficiency, size-dependent band gap, and shape control. Ligands on the NC surfaces can be substituted using ligand exchange, which significantly influence the properties and performance of LHP light-emitting diodes (LEDs). The alkyl chain in the surface ligands significantly affect external stimuli depending on their length. Additionally, aromatic ring-containing ligands improve conductivity of the film due to their conjugated structure. Herein, we introduced benzalkonium (BA) to synthesize CsPbBr₃ NCs with high quality and explored ligand their optical and electrical properties. The result is that ligand exchange significantly impacts the LHP NCs' characteristics due to overlapped orbitals between the NC surface and <em>π</em>-bonds of the aromatic ring, enhancing charge injection and transport while reducing surface defects. We confirmed the successful anion exchange, which is bound to ammonium ion of BA and the stability of the LHP NCs through various analyses. The modified LHP NCs improved photoluminescence quantum yield and narrower full width at half maximum, indicating improved material purity. This study highlights the potential of ligand exchange to customize LHP NCs’ properties, paving the way for the development of high-efficiency blue LHP LEDs, and other advanced optoelectronic devices. As results, the LHP LEDs using these ligand-exchanged LHP NCs, achieving a notable increase maximum current efficiency (CE_max,) to 5.88 %, 19.5 cd A^-1 at BA bromide, and 5.50 %, 16.6 cd A^-1 at BA chloride, compared to devices using pristine LHP NCs, which achieved external quantum efficiency (EQE) 2.4 %, CE_max 7.8 cd A^-1.</div></div>","PeriodicalId":34303,"journal":{"name":"Applied Surface Science Advances","volume":"26 ","pages":"Article 100698"},"PeriodicalIF":7.5,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143130008","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}