Article
Chemistry, Multidisciplinary
Jung Sun Eo, Jaeho Shin, Seunghoon Yang, Takgyeong Jeon, Jaeho Lee, Sanghyeon Choi, Chul-Ho Lee, Gunuk Wang
Summary: Understanding and designing the interfacial band alignment in a molecular heterojunction is crucial for achieving its desired electronic functionality. By controlling the interfacial band offset between a molecular self-assembled monolayer and a 2D semiconductor, a tailored molecular heterojunction selector can be implemented, affecting the nonlinearity of the device significantly.
Article
Nanoscience & Nanotechnology
Yongzhen Chen, Xianjie Liu, Slawomir Braun, Mats Fahlman
Summary: This study systematically investigates the influence of lone pairs of electrons on interface dipoles of materials, showing that different positions of nitrogen atoms affect hydrogen bonds and molecular orientations, thereby impacting the areal density and direction of lone pairs of electrons. The results from the double dipole step model predict interface dipoles in good agreement with experimental UV photoelectron spectroscopy results, providing new insights into the interfacial behaviors of ETMs/electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Xin Jing, Xiao Kang, Quanliang Wang, Yong Zhao, Xiangkun Wang, Liangmin Yu, Mingliang Sun
Summary: This study optimizes the cathode interface layer (CIL) in organic solar cells (OSC) by designing and synthesizing a D-A CIL small molecule. By optimizing the electrostatic potential and the arrangement of the interface dipole, better performance is achieved.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Shaohua Fu, Rui Wang, Dongsheng Tang, Xiaoxian Zhang, Dawei He
Summary: A noninvasive method was developed to evaluate the coupling strength of MoSe2/CuPc HS by combining EFM and spectroscopic measurements, revealing a new Raman mode due to strong interfacial coupling. The modulation of coupling strength was successfully achieved by changing post-treatment conditions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xiaoqing Yu, Kuo-Yang Chiang, Chun-Chieh Yu, Mischa Bonn, Yuki Nagata
Summary: Insights into the microscopic structure of aqueous interfaces are important for understanding various processes on the water surface. The researchers used HD-SFG spectroscopy to probe these interfaces and showed the importance of correcting the measured spectra for local electromagnetic field effects. They compared different models to obtain an accurate representation of the interfacial water response and found that the Lorentz model provides a straightforward method for obtaining the molecular response in the hydrogen-bonded region.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Tao Li, Chuang Feng, Biquan Xiong, Xuhui Zhu, Zhicai He, Wai-Yeung Wong
Summary: In this study, we demonstrate a charge transfer photosystem driven by an electric dipole moment using amine-containing polyfluorene polyelectrolyte (PFN) and inorganic semiconductor matrices (WO3) as building blocks. The interfacial dipoles formed between PFN and WO3 promote a nonuniform charge distribution and enhance the efficiency of photoactivity, providing insights into the design of advanced heterojunction photocatalysts.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Engineering, Environmental
Abhishek Kumar, Nada Alami Mejjati, Rita Meunier-Prest, Anna Krystianiak, Olivier Heintz, Eric Lesniewska, Charles H. Devillers, Marcel Bouvet
Summary: Organic heterostructures with high interfacial conductivity, such as the polyporphine/phthalocyanine heterostructures reported in this study, have the potential to improve the electrical performances of electronic devices. The modulation of charge transport in different polymers within the heterostructures significantly influences the ammonia sensing properties, with pZnP-1/LuPc2 demonstrating highly sensitive, reversible and stable response, while pZnP-2/LuPc2 showing low and unstable response.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Yun-Sim Kim, Chol-Hyok Ri, Un-Hyok Ko, Yun-Hyok Kye, Un-Gi Jong, Chol-Jun Yu
Summary: This study investigates the MAPbI(3)/CsPbI3 interface system through first-principles calculations, revealing the strengthening of bonding between perovskite layers and the decrease in band gap with increasing supercell size. Calculations show shallow transition states for most defects, indicating performance enhancement by interface formation.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Computer Science, Hardware & Architecture
Qian Chang, Zhaoyue Lu, Yuehong Yin, Jing Xiao, Junling Wang
Summary: A non-doped organic heterojunction (OHJ) is proposed as a charge generation layer (CGL) for high efficiency tandem OLEDs, achieving significantly higher current efficiency and external quantum efficiency (EQE) compared to single emissive unit OLEDs. The tandem device also provides better stability, with a lower efficiency roll-off. The thickness of CuPc in the CGL has a minor impact on device performance due to the tradeoff between charge injection improvement and transmittance decline.
Article
Chemistry, Multidisciplinary
Yanting Yin, Xun Pan, Mats R. Andersson, David A. Lewis, Gunther G. Andersson
Summary: This study demonstrates the charge extraction/injection capability of molybdenum trioxide (MoO3) as an interface layer in polymer bulk heterojunctions and the formation of a dipole with significant influence on charge transport at the interface. Air exposure reduces the dipole at the interface, leading to decreased performance of the photovoltaic cells.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Sumon Hati, Xuehui Yang, Prashant Gupta, Barry B. Muhoberac, Jingzhi Pu, Jing Zhang, Rajesh Sardar
Summary: This study reports the programmable manipulation of inorganic-organic interfacial electronic properties of ligand-functionalized plasmonic nanoparticles (NPs), which is crucial for their applications such as catalysis, photovoltaics, and biosensing. By functionalizing gold triangular nanoprisms (Au TNPs) with thiocinnamate ligands of varying surface dipole moments, the localized surface plasmon resonance (LSPR) properties of the Au TNPs in solid state can be reversibly tuned with a significant peak broadening. The shape of the NPs has a significant impact on the plasmonic response and work function modulation.
Article
Chemistry, Physical
Po-Jen Hsu, Abebe Tedla, Michael Zharnikov, Yian Tai
Summary: The study tested a dual modification approach for OPV devices, optimizing electrical contacts and interfacial dipole, improving buffer layer morphology and reducing defect density. While -OCH3 terminated SAM showed better performance in single interface modification, -CF3 termination performed better in dual modification, indicating a complex synergetic mechanism. The dual modification resulted in significantly larger improvement in photovoltaic characteristics compared to the standard approach, demonstrating the advantages of the dual strategy.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Engineering, Environmental
Tao Wu, Peng Xu, Daizhe Wang, Xingjian Jiang, Fengyun Guo, Shiyong Gao, Ziyi Ge, Yong Zhang
Summary: Interface engineering is crucial for improving the performance of perovskite devices. In this study, two perylenediimide small molecular cathode interface materials (CIMs), PDI-2N and PDI-4N, were synthesized and used as cathode interfacial layers (CILs) for inverted perovskite solar cells (PVSCs). PDI-4N showed higher electrical conductivity, electron mobility, and self-doping properties compared to PDI-2N. Utilizing PDI-4N as CIL achieved the highest peak power conversion efficiency (PCE) of 21.33% among PDI-based interlayer materials in inverted PVSCs. The improved device efficiency with PDI-4N was attributed to reduced defect density, lower dark current, larger recombination resistance, and better surface morphology, enhancing charge transport and collection at the PC61BM/Ag interface. Moreover, PVSCs with PDI-2N and PDI-4N as CILs exhibited good stability with only a approximately 3.0% PCE loss after 600 hours.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Mechanics
Dinh-Quan Doan, Te-Hua Fang, Tao-Hsing Chen
Summary: This study investigates the influence of surface orientation and thickness on the mechanical properties of TiN/Al bilayer composites. The results show that samples with Ti-face have the highest hardness and loading force, and an increase in TiN thickness leads to higher hardness and loading force. However, defects like dislocations and phase transformations appear more in TiN/Al workpieces with Ti-face.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Chemistry, Physical
Yuanxu Liu, Fei Fang, Xiao Sun, Weixin Huang
Summary: Composite photocatalysts undergo in situ restructure during photocatalytic reactions, and the NiO-TiO2 interfacial interaction strongly influences this process. Different structures of the photocatalysts are acquired with increasing Ni loading, and they have varying effects on the photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Zhaorui Wen, Yunlei Zhong, Bingchen He, Gang Wang, Shengwen Li, Zhen Mu, Jielei Li, Junpeng Xie, Yi Zheng, Guichuan Xing, Guo Hong, Shi Chen
Summary: Modulating the structural and electronic properties of halide perovskite material is crucial for enhancing device performance. In this study, high-quality CsPbBr3 films with improved crystallinity, preferential orientation, and carrier dynamics were achieved by using graphene as an interlayer. The presence of graphene changed the preferred orientation and band structure of the perovskite, leading to increased grain size and crystallinity. The incorporation of graphene also improved charge extraction at the perovskite/graphene/ITO interface. The resulting photodetector with graphene exhibited superior performance compared to the one without graphene.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Zhangliu Tian, Yumin Da, Meng Wang, Xinyu Dou, Xinhang Cui, Jie Chen, Rui Jiang, Shibo Xi, Baihua Cui, Yani Luo, Haotian Yang, Yu Long, Yukun Xiao, Wei Chen
Summary: Photoelectrochemical oxidation provides a promising strategy for glucaric acid production. In this work, selective oxidation of glucose to glucaric acid is realized on the photoanode of defective TiO2 decorated with single-atom Pt via a photoelectrochemical strategy. By optimizing oxygen vacancies, the defective TiO2 photoanode exhibits greatly improved charge separation, significantly enhanced selectivity, and yield of C-6 products.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yumin Da, Zhangliu Tian, Rui Jiang, Yuan Liu, Xu Lian, Shibo Xi, Yi Shi, Yongping Wang, Haotian Lu, Baihua Cui, Jinfeng Zhang, Xiaopeng Han, Wei Chen, Wenbin Hu
Summary: This paper reports the synthesis of a PtNi-NC catalyst with high catalytic activity. Density functional theory calculations reveal that PtNi dual atoms generate a synergistic effect by modulating the local electronic structure and optimizing the charge distribution, contributing to optimized adsorption properties and enhanced electrocatalytic performance. This work provides a new avenue for the fabrication of dual-atom catalysts.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Physical
Jinxian Feng, Xiongwei Zhong, Mingpeng Chen, Pengfei Zhou, Lulu Qiao, Haoyun Bai, Dong Liu, Di Liu, Yu-Yun Chen, Shi Chen, Jun Ni, Detao Liu, Hui Pan
Summary: In this study, a Fe3+-incorporated oxidized graphite (Fe3+-OGP) catalyst for oxygen evolution reaction (OER) was developed by electrochemical oxidation of graphite paper in Fe(NO3)3 solution. The Fe3+-OGP showed a low overpotential, high stability, and high Faraday efficiency in an alkaline solution. The positively charged surface of Fe3+-OGP was found to dramatically enhance the adsorption of O species and promote OER in alkaline conditions. This study provides an alternative approach for developing novel electrocatalysts based on low-cost materials.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Jian Gou, Hua Bai, Xuanlin Zhang, Yu Li Huang, Sisheng Duan, A. Ariando, Shengyuan A. Yang, Lan Chen, Yunhao Lu, Andrew Thye Shen Wee
Summary: Conventional ferroelectric compounds require at least two constituent ions for polarization switching. However, in a black phosphorus-like bismuth layer, a single-element ferroelectric state is observed, with concurrent ordered charge transfer and regular atom distortion between sublattices. The Bi atoms in the black phosphorous-like Bi monolayer exhibit a weak and anisotropic sp orbital hybridization, leading to the inversion-symmetry-broken buckled structure and charge redistribution. The in-plane electric polarization is induced in the Bi monolayer, which is experimentally visualized through scanning probe microscopy.
Article
Materials Science, Multidisciplinary
Kexuan Wang, Zhu Xu, Heng Li, Huibo Wang, Mingzheng Ge, Jilei Liu, Shengwen Li, Zekun Hu, Mengyu Zhu, Yanyan Zhang, Yuxin Tang, Shi Chen
Summary: High-crystallinity NiHCF microcubes with improved structural stability and larger crystal plane spacing were synthesized. For the first time, the reversible coinsertion/extraction of Zn2+ and Na+ ions was achieved in the HC-NiHCF microcubes in a mixed aqueous electrolyte, revealing a new ion storage mechanism of Ni-based PBAs in aqueous electrolytes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Letter
Multidisciplinary Sciences
T. J. Whitcher, A. D. Fauzi, C. Diao, X. Chi, A. Syahroni, T. C. Asmara, M. B. H. Breese, A. H. Castro Neto, A. T. S. Wee, M. A. Majidi, A. Rusydi
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Ming Yang, Qunchao Tong, Yayun Yu, Peng Liu, Guang Wang, Jiayu Dai
Summary: We report the phase-controlled growth of ternary monolayer MoSe2xTe2(1-x) alloys induced through in situ doping and composition tuning. The lattice constants, Mo-3d binding energy, and electronic bandgap of the alloys can be tuned by varying the selenium composition. First-principles calculations reveal that the valence band bowing effect of the monolayer alloys is attributed to the difference in coupling between anions and cations. This work provides a new pathway for phase modulation growth and controllable electronic structure of ternary monolayer transition metal dichalcogenide alloys.
Article
Materials Science, Multidisciplinary
Hashara Kandambige, Juan Bai, Jun Mei, Dongchen Qi, Ting Liao, Ziqi Sun
Summary: The loading of active noble-metal nanoparticles onto two-dimensional metal oxide supporters can improve catalytic performance through stable interfacial binding and reduced charge transfer distance. This study proposes a controllable self-assembly approach for synthesizing three types of 2D vanadium oxide supporters. The experimental results show that the 2D geometry has the optimal effect on catalytic kinetics, mainly due to the strongest Ir-V-O interaction at the particle-support interfaces. This work provides new insights into particle-support interaction mechanisms and offers a possible solution for optimizing electrocatalytic kinetics by adjusting the geometry of the supporter.
ACS MATERIALS LETTERS
(2023)
Article
Electrochemistry
Yuan Liu, Xu Lian, Xiaojiang Yu, Yuxiang Niu, Jinlin Yang, Yishui Ding, Wei Chen
Summary: This study investigates the interaction processes between alkali metal anodes (AMAs) and organic protective materials containing nitrogen groups. The results show that Li and Na preferentially interact with the outer nitrile groups of the protective material before interacting with the inner imine groups. Additionally, the sodiophilicity difference between the two nitrogen-containing groups is smaller compared to their lithiophilicity difference. These findings provide valuable insights for the development of more effective protective materials in the future.
BATTERIES & SUPERCAPS
(2023)
Article
Materials Science, Multidisciplinary
Juan Bai, Jing Shang, Jun Mei, Dongchen Qi, Ting Liao, Ziqi Sun
Summary: Metal exsolution engineering is a promising strategy for activating inert perovskite oxide catalysts for efficient oxygen evolution reaction. Triphenylphosphine is proposed as a reduction promotor to accelerate the exsolution of metallic species from Ruddlesden-Popper-type perovskites. The exsolved metallic aggregates are reconstructed into oxyhydroxides as active centers.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yumin Da, Rui Jiang, Zhangliu Tian, Xiaopeng Han, Wei Chen, Wenbin Hu
Summary: The development of cost-effective and highly efficient electrocatalysts is crucial for achieving a low-carbon footprint in the industry. Single-atom alloys (SAAs) have unique electronic structures, well-defined active sites, and maximum atom utilization, making them promising replacements for traditional noble metal catalysts. SAAs can tailor the adsorption properties of reaction species to promote electrocatalytic behaviors.
Article
Chemistry, Multidisciplinary
Zixing Wang, Kang Luo, Jian-Fang Wu, Peng Gao, Kexuan Wang, Shi Chen, Jian Tu, Xiulin Fan, Jilei Liu
Summary: This study improves the performance limitations of potassium-ion batteries at extreme temperatures by regulating the ion-solvent-coordinated structure, leading to enhanced cycling performance and capacity retention.
ENERGY & ENVIRONMENTAL SCIENCE
(2024)
