Microstructures最新文献

{"title":"A broadband self-powered and stable photothermoelectric detector based on Ag<sub>2</sub>Se/MWCNTs composite fabricated via screen printing","authors":"Weipeng Shi, Rui Guo, Gai-Ling Tian, Yi Chen, Yonghua Wang, Danfeng Cui, Dan Liu, Chenyang Xue","doi":"10.20517/microstructures.2024.194","DOIUrl":"https://doi.org/10.20517/microstructures.2024.194","url":null,"abstract":"Photothermoelectric (PTE) detectors hold immense potential for converting incident light signals into electrical signals, finding applications in sensing, astronomy, night vision, and communication. However, their widespread adoption is hindered by issues such as slow response times, low responsivity, and poor stability. In this study, a high-performance self-powered PTE detector based on the Ag<sub>2</sub>Se nanorods (NRs) and multi-walled carbon nanotubes (MWCNTs) is reported for the first time. The findings reveal that the electrical conductivity of the film increases with the addition of MWCNTs, albeit at the expense of the Seebeck coefficient. Notably, the film containing 0.5 wt% MWCNTs exhibited a superior power factor (303.22 μW·m<sup>-1</sup>·K<sup>-2</sup>) at 300 K. Owing to the high PTE performance, the photosensitive properties are characterized in an ultra-broadband range from the violet (405 nm) to infrared (2,500 nm) wavelengths, featuring rapid response time (1.4 s) and substantial output voltage (6.83 mV). Furthermore, the device demonstrated remarkable stability, with only a 3.4% decrease in output voltage after three months of air exposure and negligible changes in thirty cycles. Thus, the proposed device presents a novel strategy for developing PTE detectors characterized by broadband coverage, fast response times, and exceptional stability.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915472","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":"Axial chlorine-induced asymmetric cobalt single-atom coordination fields for boosting oxygen reduction reaction","authors":"Xu Jiang, Guo-Dong Xie, Junhao Li, Wenjie Huang, Jun-Da Lu, Pan Xie, Dong Yan, Wenda Ma, Yida Deng, Xuerong Zheng","doi":"10.20517/microstructures.2024.189","DOIUrl":"https://doi.org/10.20517/microstructures.2024.189","url":null,"abstract":"The development of oxygen reduction reaction (ORR) catalysts with high activity, stability, and economic applicability plays a decisive role in reducing expenses and enhancing the discharge performance of seawater-based zinc-air batteries (SWZABs). Co- and Fe-based single-atom catalysts (M-N4-C) with metal-N4 structure offer advantages of well-defined active structure and high active site utilizations. However, the oxygen electrocatalytic performance of M-N4-C remains a formidable challenge due to the highly stable centrosymmetric electronic structure. To overcome the dilemma, we develop a Co-N4Cl-C with axial coordination of Cl atoms. The axial coordination drags the Co atoms out of the Co-N4 centrosymmetric configuration. This alters the electronic configuration of Co single-atom sites, resulting in a valence state change from +1.83 to +0.67 and forming a localized negative charge environment. These alternations enhance the electronic orbital overlap between Co single-atom sites and oxygen species, promote the rapid evolution of *OOH intermediates, and inhibit the adsorption of toxic Cl- ions, ensuring the ORR kinetics and stability. Co-N4Cl-C exhibits a high oxygen reduction onset potential of 1.05 mV and a half-wave potential of 0.88 mV vs. the reversible hydrogen electrode. The SWZAB, featuring a Co-N4Cl-C catalyst cathode, Zn anode, and NaCl electrolyte supplemented with KOH, reaches a discharge voltage platform of 1.27 V and a peak power density of 179 mW·cm-2, even at 10 a current density of mA·cm-2. This study sheds important light on advancing single-atom catalysts with superior ORR performance and economic viability.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/e1373892-48cf-409b-bfe1-511899d6afec/microstructures40189.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147331785","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":"Manipulating stable four-electron zinc-iodine batteries via the introduction of diamine ligand sites","authors":"Qijiayi Guo, Chao Qiu, Yang Zhang, Jing Li, Zhixiang Chen, Fulong Li, Weifeng Liu, Xinlong Tian, Xiaodong Shi","doi":"10.20517/microstructures.2024.183","DOIUrl":"https://doi.org/10.20517/microstructures.2024.183","url":null,"abstract":"Zinc-iodine batteries (ZIBs) are considered a promising energy storage system, but are still plagued by low energy density and rampant side reactions originating from active H2O molecules in the liquid electrolyte. Realizing the coupled redox reactions within I-/I0/I+ species, i.e., four-electron transfer reactions, is deemed an effective strategy for boosting the energy density of ZIBs, which is mainly blocked by the rapid hydrolysis of nucleophilic I+ ions. To address these issues, urea with diamine ligand sites (-NH2) was introduced into the liquid electrolyte [urea electrolyte (UE)] to achieve durable four-electron ZIBs. As demonstrated by the spectroscopic characterization results, -NH2 groups can bundle the active H2O molecules by reconfiguring the hydrogen bonds, and provide additional electrophilic ligand sites for I+ ions. Based on these advantages, both the side reactions on the Zn anode and the I+ hydrolysis reaction on the I2@AC cathode are remarkably mitigated, and four-electron transfer is realized at low zinc salt concentrations. As a result, the optimized UE electrolyte effectively stabilizes the zinc metal anode, and endows the I2@AC cathode with a high reversible capacity of 187.2 mAh g-1 after 250 cycles at 1 A g-1. The disclosed intermolecular force modulation strategy in this work will offer a comprehensive perspective for the future design of liquid electrolytes for high-energy-density ZIBs.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/939d0dc4-6d3a-4a84-a1c0-7d0d7c72e790/microstructures40183.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147907571","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":"Equivalent doping of Te leads to optimized electrical and thermal transport properties in thermoelectric Cu₂MnSnSe₄ alloys","authors":"Fulong Liu, Yuqing Sun, Zhihao Li, Panpan Peng, Chunlei Wang, Hongchao Wang","doi":"10.20517/microstructures.2024.125","DOIUrl":"https://doi.org/10.20517/microstructures.2024.125","url":null,"abstract":"Quaternary chalcogenides have garnered considerable interest within the field of thermoelectric due to their intrinsic low thermal conductivity, wide bandgap and high element enrichment advantages. In this work, the thermoelectric performance of Cu2MnSnSe4 was enhanced by co-optimizing the carrier concentration and lattice thermal conductivity through self-doping with Cu and doping with Te. A series of Cu2MnSnSe4 and Cu2.1Mn0.9SnSe4-x Tex (x = 0, 0.01, 0.05, 0.10) samples were prepared by ball-milling and hot-pressing methods. The carrier concentration of the samples was significantly increased after Cu self-doping, leading to optimized electrical transport performance. The notable reduction in lattice thermal conductivity was attributed to the scattering effect caused by Te substitution-induced point defects. At 673 K, the lattice thermal conductivity of the Cu2.1Mn0.9SnSe3.9Te0.1 sample obtained the lowest value of 0.62 W m-1K-1. Finally, it achieved a maximum zT ~ 0.5 at 673 K in the Cu2.1Mn0.9SnSe3.9Te0.1 sample, roughly twice that of the Cu2MnSnSe4 sample.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/61009862-68c7-437f-8a36-68badc582512/microstructures40125.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899206","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":"Fabrication of MOF-derived porous Au@Co-ZnO nanostructures with excellent C₂H₅OH sensing performance","authors":"Kaiwen Tian, Yukang Fu, Inzimamul Haq, Shuangyang Kuang, Gaojie Xiong, Zeyuan Zhao, Tianyu Zhou, Jun Weng, Xiang Peng, Liwei Xiong","doi":"10.20517/microstructures.2024.110","DOIUrl":"https://doi.org/10.20517/microstructures.2024.110","url":null,"abstract":"Aim: Zinc oxide (ZnO) is an n-type semiconductor with a wide bandgap, excellent electron mobility, and stable chemical characteristics, making it potentially applicable in the field of gas sensing. However, conventional ZnO-based gas sensors face challenges such as high operating temperatures and low sensitivity. Methods: In this paper, we first synthesized ZIF-8 with a rhombic dodecahedron structure using a room-temperature chemical precipitation method. By doping ZIF-8 with cobalt (Co) and exchanging gold ions, followed by calcination in air, we obtained a metal-organic framework (MOF) derived porous Au@Co-ZnO nanostructure. Results: This nanostructure retained the large specific surface area and porous characteristics of ZIF-8, while its gas sensing performance was significantly enhanced compared to the pure MOF-derived ZnO nanostructure, due to Co doping and gold nanoparticle modification. At an ethanol concentration of 100 ppm, the Au@Co-ZnO sample demonstrated its best performance at 140 °C, with a response value of 205.3. This result was 28.9 times higher compared to the pure ZnO sample, which showed a response value of 7.1 under identical conditions. Additionally, the optimal operating temperature was 40 °C lower than that of the pure ZnO sample (180 °C). Furthermore, the Au@Co-ZnO samples demonstrated good stability and selectivity for ethanol gas. Conclusion: The proposed MOF-derived porous Au@Co-ZnO nanostructures not only advance the application of MOF-derived materials in gas detection but also offer a novel approach for boosting the gas-sensing performance of other metal oxide materials.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/8c890a64-29b0-4978-bcd2-327b0e10177e/microstructures40110.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147890106","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":"Lignin/graphene oxide composite coating loaded with zinc ions and its photothermal conversion and self-healing anticorrosion properties","authors":"Chang‐An Xu, Wenzi Liang, Peiping Hong, Yang Hu, Zhuohong Yang, Hao Pang","doi":"10.20517/microstructures.2024.186","DOIUrl":"https://doi.org/10.20517/microstructures.2024.186","url":null,"abstract":"At present, using biomass materials to modify graphene oxide (GO) to enhance the anticorrosion performance of coatings meets the requirements of future sustainable development. In order to endow lignin/GO coatings with self-healing function to reduce maintenance costs and avoid accidents caused by material corrosion failure, this work utilized electrostatic interactions to load zinc ions onto lignin/GO (Zn@LGO). Experimental results indicated that the cured coating exhibited both self-healing anticorrosion and photothermal conversion properties. When the content of Zn@LGO was 0.4 wt%, the surface temperature of the cured coating rose to 139.2 °C after 180 s of near-infrared radiation. The cured coating was left for 100 days in salt water, the Z0.01Hz value of coating VER-3 was up to 1.3 × 109 Ω cm2, which was two orders of magnitude higher than that of pure resin coating, and fewer corrosion products were observed on the metal surface. The scratch test showed that the damaged coating was soaked in 3.5 wt% sodium chloride for 72 h; the charge transfer impedance of coating VER-3 was 2.61 × 104 Ω cm2, which was one order of magnitude higher than that of pure resin coating. This was mainly because during metal corrosion, the hydroxide generated by the combination of hydroxide ions at the cathode and zinc ions covered the damaged area of cured coating, hindering the penetration of the corrosive medium. All in all, this research promoted the application of lignin, and also provided a reference for the design of composite coatings with both photothermal conversion and self-healing anticorrosion properties.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/49599e48-9ae3-46b2-8712-7890afeaedaa/microstructures40186.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147888462","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":"Enabling highly reversible Zn anode via an interfacial preferentially adsorbed additive containing nucleophilic groups","authors":"Canglong Li, Hongli Qi, Jie Huang, Dongping Chen, Yuanzi Cheng, Minghan Xu, Zi-Hao Jiang, Huaming Yu, Yang Huang, Guanghui Li, Yuejiao Chen","doi":"10.20517/microstructures.2024.114","DOIUrl":"https://doi.org/10.20517/microstructures.2024.114","url":null,"abstract":"The cyclability and reversibility of aqueous zinc-ion batteries (AZIBs) are severely hampered by the safety concerns arising from the Zn dendrite growth. Therefore, a stable anode with inhibited dendrites and side reactions is crucial for AZIBs. Herein, we utilized methyl acetoacetate (MA) as an additive to prevent dendrite growth and enable highly reversible Zn anodes. Benefiting from the nucleophilic groups (carbonyl groups) in MA, MA molecules can preferentially adsorb on the anode/electrolyte interface (AEI), forming a molecular protective layer. Such MA layers can not only regulate the migration and deposition of zinc ions, but also inhibit side reactions induced by the decomposition of free H2O molecules at AEI. Therefore, the symmetric cell with the addition of MA achieves a long-term cycling stability of 1,500 h at 2 mA cm-2 with a capacity of 2 mAh cm-2. In addition, the Zn//NVO full cell using MA-contained electrolyte demonstrates a high specific capacity (138.4 mAh g-1) with an outstanding capacity retention (92.8% after 600 cycles) at 1 A g-1. This work provides a principle for the use of ester-based additives with nucleophilic groups to suppress Zn dendrite growth for highly durable zinc metal anodes.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/07b19c89-e5fb-44fb-af22-c53b1237fbc2/microstructures40114.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915470","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":"Conductive PDA@HNT/rGO/PDMS aerogel composites with significantly enhanced durability and stretchability for wearable electronics","authors":"Hailong Hu, Yalun Ma, Yusuf Abdullahi Hassan, Lei Chen, Jing Ouyang, Huaming Yang, Fan Zhang","doi":"10.20517/microstructures.2024.121","DOIUrl":"https://doi.org/10.20517/microstructures.2024.121","url":null,"abstract":"Conductive polymer composites used to develop stretchable strain sensors have great potential for a wide range of applications, but engineering such a sensor with high sensitivity and durability remains very challenging. In this study, we propose a hydrothermal approach coupled with a freeze-drying technique to fabricate durable and stretchable strain sensors based on polydopamine-functionalized halloysite nanotube/reduced graphene oxide/polydimethylsiloxane (PDA@HNT/rGO/PDMS) aerogel composites. These sensors exhibit exceptional sensing performance, enhanced stretchability, linearity range, and stability. A comparative analysis of graphene oxide at different concentrations demonstrates that the flexible PDA@HNT/rGO/PDMS composites exhibit a significantly broader sensing range when the graphene oxide concentration is reduced to 2.5 mg/mL, in contrast to the higher concentration of 5.0 mg/mL. Specifically, the synergistic effect of both PDA and natural fiber HNTs results in aerogel composite strain sensors with a desirable gauge factor and a linearity sensing range as evidenced by the theoretical analysis, which demonstrates great potential for wearable electronics and human motion detection. The synergy between PDA and HNTs enhances the properties of aerogel composite strain sensors by improving interfacial adhesion, uniformly dispersing reinforcing agents, and maintaining conductive pathways, resulting in a highly sensitive, broad-range, and durable device. The development of conductive PDA@HNT/rGO/PDMS aerogel composites for flexible strain sensors represents an important advancement in the field of wearable technology and has the potential to revolutionize the way we monitor and respond to mechanical stress in various applications.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/0d615f37-e7a5-4d26-957c-19a67c4cb1ff/microstructures40121.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330984","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":"Investigation of the biocompatibility and osteogenic effects of magnesium-doped chloride-containing bioactive glasses","authors":"Zechi Ouyang, P. Li, Xiaomei Ru, Linghao Liu, Priyen A. Shah, Ousheng Liu, Robert G. Hill, Xiaohui Chen, Xiaojing Chen","doi":"10.20517/microstructures.2024.54","DOIUrl":"https://doi.org/10.20517/microstructures.2024.54","url":null,"abstract":"Bioactive glass (BG) degrades in vivo , releasing therapeutic ions and forming an apatite-like phase to repair hard tissues. While many BG-derived materials have been employed clinically, researchers continue to work on improving the physicochemical properties and biological functions of BG due to its inappropriate degradation rate and unsatisfactory bone repair effects. Our previous work revealed that the incorporation of chlorine (Cl) into BG expanded the glass structure, facilitating glass degradation and rapid hydroxyapatite formation. Chloride-containing bioactive glasses (GPCl) showed good osteogenesis effects in vitro and in vivo . However, the fast degradation rate of GPCl may cause a mismatch between bone formation and glass degradation, limiting its bone repair efficacy. This study incorporated various amounts of magnesium (Mg, 0-20 mol%) into GPCl to regulate its degradation behavior and enhance its bone regeneration ability. Four glasses were synthesized using a melt-quench method. The in vitro glass bioactivity was evaluated in α-minimum essential media (α-MEM), while the in vivo osteogenic effect of Mg-doped chloride-containing bioactive glasses (GPMgCl) was investigated on a rat skull critical-size defect and compared with the commercially available bone substitute (Bio-Oss®). Additionally, the blood and main organs of rats were collected to assess the biocompatibility of GPMgCl. Our results demonstrated that Mg delayed the degradation rate of GPCl and the rate of hydroxyapatite formation while maintaining excellent bioactivity in α-MEM. GPMgCl promoted the expression of osteogenic genes osteocalcin (OCN), bone morphogenetic protein 2 (BMP2), and vascular endothelial growth factor (VEGF), and facilitated the formation of the mineralized nodules. Moreover, it exhibited superior osteogenic effects compared to Bio-Oss® in vivo , with GPMg10Cl showing optimal bone regeneration ability. Blood biochemical analyses, blood cell tests, and hematoxylin-eosin staining of organs confirmed the excellent biocompatibility of GPMgCl. Incorporating Mg into GPCl is a promising approach to regulate degradation behavior and enhance osteogenic performance, making GPMgCl a promising bone substitute material to meet future bone repair needs.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/70ef1c27-43c9-4fd3-95dc-dd3cc8ca36a3/mic4054.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147885931","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-pressure modulation of band gap and microstructure in N-type high-entropy strontium titanate for enhanced thermoelectric performance","authors":"Xinjian Li, Xiaohuan Luo, Moran Wang, Tu Lyu, Chaohua Zhang, Fusheng Liu, Hongan Ma, Lipeng Hu","doi":"10.20517/microstructures.2024.78","DOIUrl":"https://doi.org/10.20517/microstructures.2024.78","url":null,"abstract":"In thermoelectrics, optimizing both carrier and phonon transport is crucial for enhancing thermoelectric performance. Strontium titanate, a representative N-type oxide thermoelectric material, often exhibits inferior figure of merit (zT ) due to its large band gap that limits carrier concentration, and high lattice thermal conductivity, attributed to strong Ti-O covalent bonds. Conventional approaches, such as aliovalent doping to increase carrier concentration or introducing structural defects to reduce lattice thermal conductivity, are insufficient as they fail to decouple the interdependent electrical and thermal properties. Herein, we introduce a high-pressure synthesis technique that concurrently modulates both the band gap and microstructure. This approach effectively enhances the carrier concentration by narrowing the band gap and increases the effective mass of the density of states through enhanced solubility limit of rare earth elements, significantly improving the power factor. Additionally, high-pressure condition induces microstructural defects, including point defects, dislocations, lattice distortions, and nanoscale grains, which promote broad-wavelength phonon scattering and minimize lattice thermal conductivity. Consequently, a peak zT value of 0.25 at 973 K is attained in high-entropy (Sr0.2La0.2Nd0.2Sm0.2Eu0.2)TiO3 synthesized at 5 GPa, representing a 5.3-fold improvement over undoped strontium titanate. This work highlights the pivotal role of high-pressure synthesis in decoupling the carrier and phonon transport in thermoelectrics.","PeriodicalId":515723,"journal":{"name":"Microstructures","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://f.oaes.cc/xmlpdf/8b0c7585-e321-464c-a1fa-d9f04500fd7d/mic4078.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881235","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}