Journal of Materials Chemistry C最新文献_第3页

Induced blue, green, and red-colour circularly polarized luminescence from single dye-doped homochiral poly(lactic acid) microspheres† 从单染料掺杂的同手性聚乳酸微球†中诱导蓝、绿、红三色圆偏振发光

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-28 DOI: 10.1039/D5TC01506E

Suharman, Sota Nakayama, Soh Kushida, Sundas Rani, Wijak Yospanya, Piyanan Pranee, Reiko Oda, Hiroshi Yamagishi and Yohei Yamamoto

引用次数: 0

Ferroelectric and field-induced ferroelectric phase formation in atomic-layer-deposited ZrO2 thin films with TiN electrodes† 用TiN电极沉积ZrO2原子层薄膜的铁电相和场致铁电相的形成

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-27 DOI: 10.1039/D5TC01449B

Jae Hee Song, Kyung Do Kim, Jonghoon Shin, Seong Jae Shin, Suk Hyun Lee, Seung Yong Byun, In Soo Lee, Han Sol Park, Yeon Jae Kim, Hyun Woo Nam and Cheol Seong Hwang

{"title":"Ferroelectric and field-induced ferroelectric phase formation in atomic-layer-deposited ZrO2 thin films with TiN electrodes†","authors":"Jae Hee Song, Kyung Do Kim, Jonghoon Shin, Seong Jae Shin, Suk Hyun Lee, Seung Yong Byun, In Soo Lee, Han Sol Park, Yeon Jae Kim, Hyun Woo Nam and Cheol Seong Hwang","doi":"10.1039/D5TC01449B","DOIUrl":"https://doi.org/10.1039/D5TC01449B","url":null,"abstract":"This study investigates the origin of ferroelectric (FE) phase formation in 10-nm-thick atomic-layer-deposited ZrO2 thin films by examining their structure and electrical properties as a function of deposition temperature (Tdep, 280–310 °C) and post-metallization annealing (PMA) steps. Polarization measurements revealed only field-induced ferroelectric (FFE) properties in the films deposited at 280 °C. However, the FE-like properties were observed in the films deposited at Tdep = 285–310 °C, with double remnant polarization (2Pr) values of ∼15 μC cm−2 at 310 °C, where the films exhibited improved crystallinity, larger grain size, and higher oxygen density. However, PMA led to increased oxygen deficiency, causing FE characteristics to vanish, leaving only FFE in the films. In addition, the wake-up process does not correspond to the permanent phase transition from the non-polar tetragonal phase to the polar orthorhombic phase. Rather than that, the internal field, induced by the asymmetric oxygen vacancy distribution across the film thickness, undergoes disparate evolution with the cycling in the FE and FFE regions in the film. The overall FE-like property of the woken-up state corresponds to the merged FE and FFE properties, which are also influenced by the applied electric field (Eapp) strength during the cycling and property measurements.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 29","pages":" 14751-14766"},"PeriodicalIF":5.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in engineering electronic and thermal properties of PEDOT:PSS for efficient thermoelectric energy conversion 高效热电转换PEDOT:PSS的工程电子和热性能研究进展

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-27 DOI: 10.1039/D5TC01361E

Jeong Han Song, Jeehyun Jeong, YouBin Choi, Sunwoo Cho, Ichiro Imae and Jeonghun Kwak

{"title":"Recent advances in engineering electronic and thermal properties of PEDOT:PSS for efficient thermoelectric energy conversion","authors":"Jeong Han Song, Jeehyun Jeong, YouBin Choi, Sunwoo Cho, Ichiro Imae and Jeonghun Kwak","doi":"10.1039/D5TC01361E","DOIUrl":"https://doi.org/10.1039/D5TC01361E","url":null,"abstract":"Conjugated polymer based thermoelectric (TE) devices offer a promising, sustainable power source for wearable devices, with inherent advantages such as low-cost, flexibility, and low thermal conductivity (κ). Among them, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has garnered significant attention due to its excellent tunability that allows effective optimization of its TE figure of merit (ZT). Over the past decade, various processing methods—beyond conventional doping strategies—have been proposed to optimize the power factor (PF) while reducing κ. These advancements have steadily improved the TE performance of PEDOT:PSS closer to that of classical inorganic materials, highlighting the need for a comprehensive review to consolidate recent progress and explore future directions. In this review, contemporary approaches to engineering the electronic and thermal properties of PEDOT:PSS for advancing its TE performance are explored. The underlying mechanism by which these methodologies enhance the PF and reduce κ is examined, along with a discussion of exemplary breakthroughs that have leveraged these approaches to achieve high performance. The current limitations and future considerations of PEDOT:PSS-based TE are finally discussed, providing insights into potential pathways to surpass the current ZT levels.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 28","pages":" 14144-14167"},"PeriodicalIF":5.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A terahertz metamaterial absorber with independently tunable absorbance and bandwidth based on BP neural network optimization 基于BP神经网络优化的吸光度和带宽可独立调谐的太赫兹超材料吸收体

IF 5.1 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-27 DOI: 10.1039/D5TC01763G

Jiaran Xiong, Chao Li, Dong Wang, Song Gao, Yue Che, Guozheng Wu and Mingyuan Guo

{"title":"A terahertz metamaterial absorber with independently tunable absorbance and bandwidth based on BP neural network optimization","authors":"Jiaran Xiong, Chao Li, Dong Wang, Song Gao, Yue Che, Guozheng Wu and Mingyuan Guo","doi":"10.1039/D5TC01763G","DOIUrl":"https://doi.org/10.1039/D5TC01763G","url":null,"abstract":"A broadband metamaterial absorber (MA) is proposed in this paper, whose parameters and absorption spectra are optimized and predicted by the back propagation (BP) neural network (NN). This MA realizes the independent modulation of absorbance and bandwidth using vanadium dioxide (VO2) and graphene. When the conductivity of VO2 is 2 × 105 S m−1 with the Ef of graphene at 1 eV, the MA can achieve more than 95% absorbance within 2.16–6.23 THz. Moreover, the absorbance modulation can be realized by temperature control with a modulation depth of 61.48%, and bandwidth modulation can be realized by voltage control with a modulation depth of 37.35%. The proposed MA allows for the modulation of both absorbance and bandwidth, addressing the limitations of modulation dimensions and presenting a new design approach for flexibly tunable MAs. Furthermore, by the use of the BP NN, the optimization of the structure can be achieved more efficiently.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 30","pages":" 15698-15706"},"PeriodicalIF":5.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photo-modulated charge transport in single-molecule optoelectronic devices 单分子光电器件中的光调制电荷输运

IF 5.1 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-27 DOI: 10.1039/D5TC01991E

Zhixin Qiu, Kongtao Chen, Jiali Huang, Hao Zhang, Zongyuan Xiao, Jing Li, Junyang Liu and Wenjing Hong

引用次数: 0

Improved electrocaloric effect and working temperature span in BaTiO3-based ferroelectric ceramics via texture engineering† 通过织构工程改善了batio3基铁电陶瓷的热效应和工作温度范围

IF 5.1 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-27 DOI: 10.1039/D5TC00991J

Meng Liu, Xiafeng He, Li Ma, Zhenyong Cen, Xuefeng Chen and Nengneng Luo

{"title":"Improved electrocaloric effect and working temperature span in BaTiO3-based ferroelectric ceramics via texture engineering†","authors":"Meng Liu, Xiafeng He, Li Ma, Zhenyong Cen, Xuefeng Chen and Nengneng Luo","doi":"10.1039/D5TC00991J","DOIUrl":"https://doi.org/10.1039/D5TC00991J","url":null,"abstract":"The electrocaloric effect (ECE) is promising in solid-state refrigeration applications. However, achieving this has been facing long-term challenges in terms of high adiabatic temperature change (ΔT) and wide working temperature span (Tspan). Herein, we demonstrated that texture engineering could effectively address these problems, based on a systematic study of the electrocaloric (EC) response of the random, 〈001〉 and 〈111〉 textured BaHf0.11Ti0.89O3 ceramics with the rhombohedral phase in majority. Particularly, the 〈111〉 textured ceramics simultaneously exhibited the highest ΔT (1.48 K) and largest Tspan (65 °C) under an electric field of 50 kV cm−1, which were respectively 1.3 and 1.7 times those of the random one. In essence, the outstanding EC responses originated from the polarization rotation and increasing relaxation behavior after texture engineering. This study provides an effective approach to promote the EC performance of BaTiO3-based ceramics and can also be expanded to a variety of dielectric materials.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 30","pages":" 15572-15581"},"PeriodicalIF":5.1,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep-red TADF dendronized polymer for efficient non-doped solution-processed OLEDs† 用于高效非掺杂溶液加工oled的深红色TADF枝状聚合物†

IF 5.1 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-26 DOI: 10.1039/D5TC02176F

Chensen Li, Xiansheng Li, Xin Luo, Bo Xu, Martin R. Bryce, Zhongjie Ren and Shouke Yan

{"title":"Deep-red TADF dendronized polymer for efficient non-doped solution-processed OLEDs†","authors":"Chensen Li, Xiansheng Li, Xin Luo, Bo Xu, Martin R. Bryce, Zhongjie Ren and Shouke Yan","doi":"10.1039/D5TC02176F","DOIUrl":"https://doi.org/10.1039/D5TC02176F","url":null,"abstract":"Significant progress has been made in red thermally activated delayed fluorescence (TADF) emitters, but efficient solution-processable deep-red TADF polymers and their non-doped organic light-emitting diodes (OLEDs) are rarely reported. A novel deep-red TADF dendronized polymer PNAI-AcCz was synthesized to address this issue. First, the acridan donor was encapsulated by 3,6-di-tert-butylcarbazole via conjugated linkage to raise the highest occupied molecular orbital (HOMO) energy level and decrease aggregation caused quenching; then a non-conjugated carbazole connects the 1,8-naphthalimide acceptor to increase the solubility; finally, a linear dendronized copolymer was obtained by homopolymerization with an alkyl backbone as the main chains. The highly twisted donor–acceptor architecture leads to a small singlet–triplet energy gap of 0.015 eV, high photoluminescence quantum yield of 15%, and short delayed fluorescence lifetime of 4.20 μs. The non-doped solution-processed OLED based on PNAI-AcCz achieved a high EQE of 2.6% with a deep-red emission peak at 659 nm, which is the highest EQE value reported to date in the non-doped solution-processed deep-red TADF OLEDs.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 30","pages":" 15628-15633"},"PeriodicalIF":5.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced specific detectivity of ternary near-infrared organic photodetectors with a ZnO/PDIN double-electron transport layer for health monitoring† 具有ZnO/PDIN双电子传输层的三元近红外有机光电探测器用于健康监测的比检出率提高

IF 5.1 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-26 DOI: 10.1039/D5TC01010A

Honglin Wang, Minghao Wang, Jingchong Liang, Dawei Yan, Linghai Xie, Xiaoya Hou and Jie Zhang

{"title":"Enhanced specific detectivity of ternary near-infrared organic photodetectors with a ZnO/PDIN double-electron transport layer for health monitoring†","authors":"Honglin Wang, Minghao Wang, Jingchong Liang, Dawei Yan, Linghai Xie, Xiaoya Hou and Jie Zhang","doi":"10.1039/D5TC01010A","DOIUrl":"https://doi.org/10.1039/D5TC01010A","url":null,"abstract":"Near-infrared (NIR) organic photodetectors (OPDs) play a crucial role in various technological applications owing to their outstanding responsivity in the NIR range. The OPD fabricated in this study by incorporating an appropriate amount of the third component into the active layer blend film and applying a zinc oxide/N,N′-bis[3-(dimethylamino)propyl]perylene-3,4,9,10-tetracarboxylic diimide (ZnO/PDIN) double electron transport layer (double-ETL) demonstrated optimal interfacial performance, which effectively minimized energy disorder in the active layer, reducing the carrier recombination loss and enabling a relatively fast charge transfer time. Utilizing the optimal device structure, the dark current (JD) was decreased to 1.4 × 10−10 A cm−2 at a bias of −0.1 V, the noise current (in) was suppressed to 1.86 × 10−14 A Hz−1/2 and the specific detectivity (D*) obtained from in reached 1.3 × 1013 Jones at 808 nm and remained above 1013 Jones from 500 to 900 nm. Additionally, the device exhibited a fast response speed of approximately 1.993 μs and a high cutoff frequency of −3 dB exceeding 1 MHz. The NIR-OPD showed perfect device performance in weak optical signal detection and was successfully applied for accurate heart rate and blood oxygen monitoring.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 30","pages":" 15442-15450"},"PeriodicalIF":5.1,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chalcogenide phase-change materials: unveiling new horizons with big data and machine learning 硫族相变材料：用大数据和机器学习揭开新视野

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-25 DOI: 10.1039/D5TC01074H

Xuanguang Zhang, Kaiqi Li, Jian Zhou and Zhimei Sun

{"title":"Chalcogenide phase-change materials: unveiling new horizons with big data and machine learning","authors":"Xuanguang Zhang, Kaiqi Li, Jian Zhou and Zhimei Sun","doi":"10.1039/D5TC01074H","DOIUrl":"https://doi.org/10.1039/D5TC01074H","url":null,"abstract":"Chalcogenide phase-change materials (PCMs) have been the subject of extensive research and development due to their unique electrical and optical properties. PCMs have been successfully applied in various optical discs and have made significant strides in data storage, such as in phase-change random access memory (PCRAM) devices. Moreover, PCMs have found promising applications in photonics for controlling light propagation and interaction, as well as in neuromorphic computing systems that mimic the functionality of the human brain. This review comprehensively summarizes the research on PCMs assisted by big data analytics and machine learning (ML) methods. Computational data exploration involves screening optimal dopants and predicting material properties through high-throughput calculations and ML models. Large-scale simulations enabled by machine learning potential (MLP) have deepened the understanding of phase transition dynamics and thermodynamic properties. In device-scale simulation and design, ML has been crucial in optimizing memory devices and exploring the potential of PCMs in neuromorphic computing. Finally, the future research directions and current challenges of PCMs are summarized.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 28","pages":" 14168-14186"},"PeriodicalIF":5.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144646720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Side-chain engineering of bifunctional linkage unit-linked giant molecular acceptors for organic solar cells† 有机太阳能电池双功能链接单元连接大分子受体的侧链工程

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2025-06-25 DOI: 10.1039/D5TC01252J

Yuqian Zhou, Yanyi Zhong, Shijie Yuan, Hanyu Cheng, Weili Li, Jun Han, Jiangbin Zhang, Kai Han, Jun Yuan, Yungui Li, Lihui Jiang and Yingping Zou

{"title":"Side-chain engineering of bifunctional linkage unit-linked giant molecular acceptors for organic solar cells†","authors":"Yuqian Zhou, Yanyi Zhong, Shijie Yuan, Hanyu Cheng, Weili Li, Jun Han, Jiangbin Zhang, Kai Han, Jun Yuan, Yungui Li, Lihui Jiang and Yingping Zou","doi":"10.1039/D5TC01252J","DOIUrl":"https://doi.org/10.1039/D5TC01252J","url":null,"abstract":"Side-chain engineering serves as a simple yet effective strategy to regulate the molecular packing and optimize the active-layer morphology in organic solar cells (OSCs). However, in the emerging class of giant molecular acceptors (GMAs) constructed using bifunctional linkage units, current optimization efforts have predominantly focused on modifying the linkers, with limited exploration of side-chain modulation. To address this gap, GMAs DY-C11 and DY-BO, featuring sterically differentiated side chains, were designed and synthesized in this study. DY-C11, with an optimized geometric configuration, exhibits enhanced molecular stacking and facilitates fibrillation when blended with the polymer donor PM6. Consequently, the DY-C11-based device exhibits a remarkable fill factor (FF) of 73.31%, a short-circuit current density (Jsc) of 22.05 mA cm−2, and a power conversion efficiency (PCE) of 14.80%, significantly outperforming the DY-BO-based counterpart. This study elucidates the critical role of side-chain steric effects in governing the optoelectronic properties of bifunctionally linked GMAs, providing essential guidelines for designing high-performance OSC materials through rational side-chain engineering.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 29","pages":" 15151-15158"},"PeriodicalIF":5.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144695673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0