Electronic Materials Letters最新文献_第8页

Superhydrophobic Polysilicon Surface Induced by Stearic Acid-treated La(OH)3 Coating 硬脂酸处理的La(OH)3涂层诱导的超疏水多晶硅表面

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-05-07 DOI: 10.1007/s13391-025-00576-6

Junseong Hur, Sangwoo Ryu

{"title":"Superhydrophobic Polysilicon Surface Induced by Stearic Acid-treated La(OH)3 Coating","authors":"Junseong Hur, Sangwoo Ryu","doi":"10.1007/s13391-025-00576-6","DOIUrl":"10.1007/s13391-025-00576-6","url":null,"abstract":"<div><p>The growth and surface functionalization of silicon (Si) thin films have attracted significant attention for applications in microelectronics, photovoltaics, sensors, and actuators. Among various surface functionalities, hydrophobicity is critical in environments where contact with water-based liquids must be minimized. In this study, a 50 μm-thick polycrystalline Si film was deposited on a SiO₂/Si substrate using plasma-enhanced chemical vapor deposition (PECVD). X-ray diffraction revealed a strong (220) preferential orientation with a naturally textured surface morphology. Surface modification with stearic-acid-treated lanthanum hydroxide [SA-La(OH)₃] converted the initially hydrophilic Si surface to a hydrophobic state. When the treatment duration exceeded 12 h, the surface exhibited superhydrophobic behavior, with a water contact angle exceeding 150°. Furthermore, when applied to PET substrates commonly used in flexible electronics and photovoltaic backsheets, the SA-La(OH)₃ coating significantly reduced water vapor permeation by effectively repelling moisture. These results highlight the potential of SA-La(OH)₃ as a robust moisture barrier and a functional coating for hydrophobic surface engineering on Si-based devices.</p></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 4","pages":"626 - 632"},"PeriodicalIF":2.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Layered Perovskite PrBaCo1.8Fe0.2O5+δ Cathode for Intermediate-Temperature Solid Oxide Fuel Cell 层状钙钛矿PrBaCo1.8Fe0.2O5+δ中温固体氧化物燃料电池阴极性能评价

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-05-07 DOI: 10.1007/s13391-025-00574-8

Aofei Li, Pingxiang Duan, Dingshan Zhen, Yue Xu, Fushao Li, YanYan Zhu, Tong Wu, Long Jiang, Qiming Pei

引用次数: 0

Synthesis of Highly Dense and Spherical Carbonate Mn0.5Fe0.5CO3 Precursor for LiMn0.5Fe0.5PO4 Cathode Material LiMn0.5Fe0.5PO4正极材料高密度球形碳酸盐Mn0.5Fe0.5CO3前驱体的合成

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-29 DOI: 10.1007/s13391-025-00575-7

Do Van Minh, Vitalii Ri, Jeongwoo Lim, Nguyen Cao Nam, Nguyen Minh Hieu, Chunjoong Kim

{"title":"Synthesis of Highly Dense and Spherical Carbonate Mn0.5Fe0.5CO3 Precursor for LiMn0.5Fe0.5PO4 Cathode Material","authors":"Do Van Minh, Vitalii Ri, Jeongwoo Lim, Nguyen Cao Nam, Nguyen Minh Hieu, Chunjoong Kim","doi":"10.1007/s13391-025-00575-7","DOIUrl":"10.1007/s13391-025-00575-7","url":null,"abstract":"<div><p>The development of electrical vehicles (EVs) demands more efficient and environmentally friendly electrode materials to extend the driving range and reduce the cost of the batteries. The transition metal phosphate is considered as a promising solution due to its non-toxicity, affordability and safety. However, its use has been hindered by the low tap density in comparison with layered oxide cathode materials, which limits the volumetric energy density of the batteries. In order to tackle this challenge, we synthesize high-performance LiMn<sub>0.5</sub>Fe<sub>0.5</sub>PO<sub>4</sub> (LFMP) from carbonate precursors prepared by co-precipitation method. In this work we demonstrated that adjusting key parameters of the co-precipitation process allows formation of dense and spherical precursors for micro-sized LMFP cathode materials. LMFP delivered 137.86 mAhg<sup>− 1</sup> at 50<sup>o</sup>C owing to the fast Li<sup>+</sup>-diffusion kinetics. Despite the necessity of further optimization, we believe that our synthesis route could pave the way to the development of high-energy-density batteries based on LMFP.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 4","pages":"590 - 598"},"PeriodicalIF":2.6,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wafer-Level Underfill Effect on Reliability of Microbump Under the Mixed Loading of Electromigration and Thermal Cycling 电迁移和热循环混合载荷下晶片级下填对微凸点可靠性的影响

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-25 DOI: 10.1007/s13391-025-00570-y

Kirak Son, Hyodong Ryu, Gahui Kim, Jeong Sam Han, Young-Bae Park

{"title":"Wafer-Level Underfill Effect on Reliability of Microbump Under the Mixed Loading of Electromigration and Thermal Cycling","authors":"Kirak Son, Hyodong Ryu, Gahui Kim, Jeong Sam Han, Young-Bae Park","doi":"10.1007/s13391-025-00570-y","DOIUrl":"10.1007/s13391-025-00570-y","url":null,"abstract":"<div><p>It is critical to apply wafer-level underfill (WLUF) to establish and improve the stability of microbumps. Although applying WLUF to microbump interconnection layers is common, understanding the behavior of microbump stability without WLUF protection is also critical. Electromigration (EM) and thermal cycling (T/C) tests were performed at a current density of 1.3 × 10<sup>5</sup> A/cm<sup>2</sup> at 150℃ and − 45 to 125℃, respectively, to investigate the effect of a WLUF on the reliability for mixed loading of EM and T/C in Cu/Ni/Sn-Ag microbumps. The results of the mixed loading tests showed different failure modes for microbumps with and without the WLUF. Microbump test samples without the WLUF exhibited horizontal cracks. On the other hand, the test samples with WLUF showed cracks propagating obliquely. A series of finite element analyses revealed that the WLUF caused vertical deformation and led to an increase in tensile stress, resulting in oblique crack propagation. These results suggest that the WLUF, due to its relatively high coefficient of thermal expansion, undergoes vertical expansion during thermal cycling, which introduces vertical tensile strain into the microbump structure. As a result, it functions as a stress redistribution layer that modifies the internal stress profile. This redistribution alters the crack propagation path and enhances the mechanical reliability of microbump interconnects under mixed EM and T/C loading.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 4","pages":"520 - 531"},"PeriodicalIF":2.6,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145144618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electromagnetic Interference Shielding Effect on the Strongly Correlated electron System NiWO4 Embedded in PDMS PDMS中嵌入强相关电子系统NiWO4的电磁干扰屏蔽效应

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-19 DOI: 10.1007/s13391-025-00572-w

Yunseong Ji, Gi Hyeon Han, Seung Yong Lee

{"title":"Electromagnetic Interference Shielding Effect on the Strongly Correlated electron System NiWO4 Embedded in PDMS","authors":"Yunseong Ji, Gi Hyeon Han, Seung Yong Lee","doi":"10.1007/s13391-025-00572-w","DOIUrl":"10.1007/s13391-025-00572-w","url":null,"abstract":"<div><p>The insulators in strongly correlated electron systems (SCES) exhibit exotic condensed matter phenomena due to the inherent strong Coulombic repulsion between magnetic cations within their crystal structures, which leads to polaronic hopping conduction, characterized by a high activation energy for carrier transport, and results in unique magnetic properties that vary with environmental conditions. Consequently, the physical properties of SCES insulators can be modulated by tailoring Coulombic repulsion through substitutional doping. In this study, we explore the electromagnetic interference (EMI) functionality of NiWO<sub>4</sub> SCES, which is tuned by substituting magnetic cations (X = V, Co, and Fe) at the Ni site. The magnetic cation-doped NiWO<sub>4</sub> SCES powders were synthesized via solid-state methods and confirmed as single-phase materials through X-ray diffraction (XRD) analysis. To fabricate the EMI film, NiWO<sub>4</sub> powders were mixed with polydimethylsiloxane (PDMS), followed by spin-coating and vacuum oven drying. Although the NiWO<sub>4</sub>-PDMS composites were physically mixed, as confirmed by optical measurements such as FT-IR and photoluminescence, the composite exhibited a reflection loss of approximately − 3 dB within the frequency range of 25–40 GHz. Upon substitution of magnetic cations at the Ni site, the X-NiWO<sub>4</sub> samples demonstrated an enhanced reflection loss of -8 dB, attributed to variations in magnetization. These findings highlight the EMI functionality of NiWO<sub>4</sub> SCES and the potential for further enhancement through magnetic cation doping. Given the simple composition of the NiWO<sub>4</sub>-PDMS system, SCES materials introduce the potential for advanced EMI functionality, providing insights into different mechanisms that can be achieved through optimized structural and compositional modifications.</p></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 4","pages":"552 - 558"},"PeriodicalIF":2.6,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ZIFs-Derived Bimetallic Synergistic Cu/FeNC Catalyst for Improving ORR Performance zifs衍生双金属协同Cu/FeNC催化剂改善ORR性能

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-17 DOI: 10.1007/s13391-025-00569-5

Xinfu He, Di Gao, Hongju Wu, Minlong Guan, Chuhan Wang, Jianglong Zhou, Chi Ma, Yating Zhang, Anning Zhou

{"title":"ZIFs-Derived Bimetallic Synergistic Cu/FeNC Catalyst for Improving ORR Performance","authors":"Xinfu He, Di Gao, Hongju Wu, Minlong Guan, Chuhan Wang, Jianglong Zhou, Chi Ma, Yating Zhang, Anning Zhou","doi":"10.1007/s13391-025-00569-5","DOIUrl":"10.1007/s13391-025-00569-5","url":null,"abstract":"<div><p>The development of low-cost, high-activity non-precious metal catalysts for the oxygen reduction reaction (ORR) is of great significance in promoting the large-scale commercialization of fuel cells (FCs). This study successfully prepared nitrogen-coordinated Cu/Fe bimetallic-doped porous carbon catalysts (Cu/FeNC), which enhance the catalytic activity and stability of the ORR by introducing Cu to optimize the electronic structure of the active site of Fe. Additionally, the influence of Cu/Fe ratio and calcination temperature on the physicochemical properties and performance of the catalysts was investigated. The optimized Cu/FeNC catalysts exhibited a large specific surface area (567.8 m<sup>2</sup>·g<sup>− 1</sup>) and an abundant mesoporous structure. In alkaline media, the Cu/FeNC demonstrated excellent ORR catalytic performance, characterized by a high onset potential of 0.98 V, a half-wave potential of 0.86 V, and a limiting current density of 5.2 mA·cm<sup>− 2</sup>. Compared to commercial Pt/C, Cu/FeNC exhibited superior methanol tolerance and better long-term stability, retaining 91.2% of its activity after 6 h. This study provides a novel approach for synthesizing high-performance and low-cost bimetallic catalysts.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 4","pages":"540 - 551"},"PeriodicalIF":2.6,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure, Mechanical Properties and Thermal Conductivity of Al-RE-xSi Alloys Al-RE-xSi合金的显微组织、力学性能和导热性能

IF 2.1 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-05 DOI: 10.1007/s13391-025-00551-1

Hyeon-Taek Son, Yong-Ho Kim, Hyo-Sang Yoo, Byong-Kwon Lee, Eun-Chan Ko, Seong-Ho Lee, Gyu-Seok Lee

引用次数: 0

Persistence Luminescence and Mechanoluminescence in Er3+/Eu2+ Co-Doped SrS/SrZnSO Composites Er3+/Eu2+共掺杂SrS/SrZnSO复合材料的持续发光和机械发光

IF 2.1 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-04 DOI: 10.1007/s13391-025-00566-8

Ligang Zhang, Xiaoming Xu, Lihong Ma, Haosen Wang

{"title":"Persistence Luminescence and Mechanoluminescence in Er3+/Eu2+ Co-Doped SrS/SrZnSO Composites","authors":"Ligang Zhang, Xiaoming Xu, Lihong Ma, Haosen Wang","doi":"10.1007/s13391-025-00566-8","DOIUrl":"10.1007/s13391-025-00566-8","url":null,"abstract":"<div><p>A series of Er<sup>3+</sup>/Eu<sup>2+</sup>-activated SrS/SrZnSO with different Er<sup>3+</sup>/Eu<sup>2+</sup>concentrations were synthesized at 1300℃ for 3 h through high temperature solid-state reaction, and their persistence luminescence and mechanoluminescence properties were studied. Upon 450 nm laser excitation, SrS/SrZnSO:Er<sup>3+</sup>/Eu<sup>2+</sup> emitted orange-red light, which could be observed with the naked eyes. When the laser was removed, it showed long afterglow orange-red luminescence. The brightness and duration of the long afterglow increase with the increase concentration of Er<sup>3+</sup>/Eu<sup>2+</sup> from x:y = 0.5%:1% to 3%:1%. SrS/SrZnSO:Er<sup>3+</sup>/Eu<sup>2+</sup> was confirmed as an excellent persistent luminescence material since it could continuously emit light for nearly 10 min. Moreover, under pressure stimulation SrS/SrZnSO:Er<sup>3+</sup>/Eu<sup>2+</sup>showed a novel type of mechanoluminescence (ML) with the emitting bright green light which linearly depended on the force. Under the same force of friction, the sample SrS/SrZnSO:Er<sup>3+</sup>/Eu<sup>2+</sup> with Er<sup>3+</sup>/Eu<sup>3</sup> = 1%:0% emitted the strongest ML among prepared samples. Furthermore, the mechanism of mechanoluminescence was studied in details. This study can expand the family of ML materials while promoting the applications of mechanoluminescence materials in damage diagnosis, human-machine interfaces, and pressure sensing.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 3","pages":"443 - 455"},"PeriodicalIF":2.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum-Confinement-Driven Advancements of Energy Storage Density in Dielectric Polymers: TiO₂ Nanowires Decorated with Ultra-Small Metal Nanoparticles 介电聚合物中能量存储密度的量子约束进展：超小金属纳米粒子修饰的tio2纳米线

IF 2.6 4区材料科学

Electronic Materials Letters Pub Date : 2025-04-03 DOI: 10.1007/s13391-025-00568-6

Seung-Wook Kim, Sung-Yub Ji, Han-Bo Jung, Ye-Ji Son, Hyo-Min Kim, Baojin Chu, Dae-Yong Jeong

{"title":"Quantum-Confinement-Driven Advancements of Energy Storage Density in Dielectric Polymers: TiO₂ Nanowires Decorated with Ultra-Small Metal Nanoparticles","authors":"Seung-Wook Kim, Sung-Yub Ji, Han-Bo Jung, Ye-Ji Son, Hyo-Min Kim, Baojin Chu, Dae-Yong Jeong","doi":"10.1007/s13391-025-00568-6","DOIUrl":"10.1007/s13391-025-00568-6","url":null,"abstract":"<div><p>Introducing high dielectric constant (high-<i>k</i>) ceramic fillers into dielectric polymers is a widely adopted strategy for improving the energy storage density of nanocomposites. However, the mismatch in electrical properties between ceramic fillers and polymer matrix often results in reduced dielectric breakdown strength and increased dielectric loss. This study addresses these challenges by utilizing TiO₂ nanowires (NWs) decorated with ultra-small palladium (Pd) or gold (Au) nanoparticles, leveraging the quantum-confinement effect of nanometals to enhance energy storage performance. The decorated TiO₂ NWs exhibit a core-satellite structure, where the nanometal particles mitigate the interfacial polarization between the ceramic fillers and the polymer matrix, reducing dielectric loss and increasing breakdown strength. Compared to pristine P(VDF-HFP) polymer, the composite with 6 vol% TiO₂@PDA@Pd NWs demonstrated a 535% improvement in discharge energy density. This significant enhancement arises from the synergistic effects of the quantum-confinement properties of the metal nanoparticles and the optimized interface between the fillers and the polymer matrix.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 6","pages":"800 - 809"},"PeriodicalIF":2.6,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145456234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Observation of Rashba Effect and Nonreciprocal Transport in Bi2Te3 Bi2Te3中Rashba效应和非互易输运的观察

IF 2.1 4区材料科学

Electronic Materials Letters Pub Date : 2025-03-28 DOI: 10.1007/s13391-025-00558-8

Jeong Ung Ahn, Eunsu Lee, Seongbeom Kim, Ki Hyuk Han, Seong Been Kim, OukJae Lee, Gyu-Chul Yi, Hyun Cheol Koo

{"title":"Observation of Rashba Effect and Nonreciprocal Transport in Bi2Te3","authors":"Jeong Ung Ahn, Eunsu Lee, Seongbeom Kim, Ki Hyuk Han, Seong Been Kim, OukJae Lee, Gyu-Chul Yi, Hyun Cheol Koo","doi":"10.1007/s13391-025-00558-8","DOIUrl":"10.1007/s13391-025-00558-8","url":null,"abstract":"<div><p>Topological insulators (TIs) represent a unique state of matter that has attracted significant interest in condensed matter physics due to their surface conduction states with high spin polarization. Despite extensive studies on the properties of TIs, there has been limited exploration of the Rashba parameter and large-scale film growth. In this work, we investigate the Rashba effect in molecular-beam-epitaxy(MBE)-grown Bi<sub>2</sub>Te<sub>3</sub> channels by measuring anisotropic magnetoresistance (AMR). The extracted Rashba parameter is as large as 16.3 eV·Å, significantly exceeding values reported in previous studies. This strong Rashba field is attributed to the minimization of imperfections and crystal defects during film fabrication. Furthermore, nonreciprocal charge transport induced by the Rashba-like effective field is clearly observed up to room temperature through harmonic resistance measurements. The temperature dependence of the nonreciprocal coefficient exhibits a non-monotonic behavior, which is believed to arise from the temperature dependence of the Fermi level position.</p><h3>Graphic Abstract</h3><div><figure><div><div><picture><img></picture></div><div><p>Topological insulators (TIs) represent a unique state of matter that has attracted significant interest in condensed matter physics due to their surface conduction states with high spin polarization. In this work, we investigate the Rashba effect in molecular-beam-epitaxy(MBE)-grown Bi<sub>2</sub> Te<sub>3</sub> channel and temperature dependence of nonreciprocal charge transport.</p></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"21 3","pages":"420 - 428"},"PeriodicalIF":2.1,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0