Article
Materials Science, Multidisciplinary
Lihong Huang, Tong Liu, Xiaobo Mo, Guocai Yuan, Runyu Wang, Hang Liu, Xiaobo Lei, Qinyong Zhang, Zhifeng Ren
Summary: Zn and Ag co-doping effectively increases the carrier concentration and mobility of Mg3Ag0.01Sb2, leading to an improvement in the power factor, while reducing lattice thermal conductivity significantly due to the large mass difference between Zn and Mg. The sample Mg2.39Zn0.6Ag0.01Sb2 with an optimal doping concentration achieved a maximum ZT value of 0.84 at 773K.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Wenwei Yang, Wenkai Le, Jingyi Lyu, Jingfeng Li, Zhixing Chen, Qian Zhang, Shenghua Liu, Xiangguo Li, Jing Shuai
Summary: This study improves the thermoelectric properties of P-type Sb2Te3 through ball milling and hot pressing techniques, resulting in a significant increase in the ZT value, which has promising applications.
Article
Chemistry, Physical
Chandrakant Prajapati, Saravanan Muthiah, M. Navaneethan, Naval Kishor Upadhyay, Radhey Shyam, Sanjay R. Dhakate
Summary: In this study, a p-type higher manganese silicide (HMS)-CrSi2 nanocomposite with significantly enhanced and compatible thermoelectric performance was synthesized using a combination of liquid-phase melt-spinning and solid-phase spark plasma sintering. The composite material showed a 2-fold increase in the thermoelectric figure-of-merit (zT) value compared to pure HMS, mainly due to a reduction in thermal conductivity.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Sicheng Wu, Weilong Xing, Mengsu Zhu, Ye Zou, Yimeng Sun, Wei Xu, Daoben Zhu
Summary: The study found that both PTbTTVT and PTbTTVT-F exhibited good thermoelectric performance with the best power factor (PF) exceeding 35 μW m(-1) K-2. Despite PTbTTVT-F having worse hole mobility than PTbTTVT, it could achieve similar or even superior PF with suitable dopants. This suggests that polymers with less ordered stacking may be more tolerant to dopant disruption, and utilizing amorphous materials with high mobility could be a useful strategy for developing high-performance organic thermoelectric materials (OTEs).
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Peng Zhao, Honghao Yao, Shizhen Zhi, Xiaojing Ma, Zuoxu Wu, Yijie Liu, Xinyu Wang, Li Yin, Zongwei Zhang, Shuaihang Hou, Xiaodong Wang, Siliang Chen, Chen Chen, Xi Lin, Haoliang Liu, Xingjun Liu, Feng Cao, Qian Zhang, Jun Mao
Summary: Realizing high performance in both n-type and p-type materials is essential for designing efficient thermoelectric devices. However, the doping bottleneck is often encountered, i.e., only one type of conduction can be realized. In this work, the band structure of CdSb is calculated, revealing the potential of exceptional thermoelectric performance in n-type CdSb. Experimental results show successful realization of n-type conduction by tuning the stoichiometry of CdSb and further doping with indium. Future optimization of n-type CdSb should focus on identifying practical approaches to optimize the electron concentration.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Wenyan Zhu, Wenqiang Fang, Jiahao Zou, Shengjie Zhu, Jianxiao Si
Summary: In this study, indium-doped samples of n-type Mg3Sb2-based materials were successfully synthesized. It was found that indium doping can increase the electrical conductivity and carrier mobility of the materials, while suppressing the lattice thermal conductivity. A higher ZT value was achieved in the Mg3.47In0.03Sb1.7Bi0.26Te0.04 sample.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sihui Deng, Changshuai Dong, Jian Liu, Bin Meng, Junli Hu, Yang Min, Hongkun Tian, Jun Liu, Lixiang Wang
Summary: A non-fused-ring strategy was used to design n-type conjugated polymers by introducing electron-withdrawing groups to a non-fused-ring polythiophene backbone. The resulting polymer, n-PT1, showed low energy levels, high electron mobility, and high crystallinity. After n-doping, n-PT1 exhibited excellent thermoelectric performance with the highest reported power factor for n-type conjugated polymers.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Cheng-Lung Chen, Te-Hsien Wang, Zih-Gin Yu, Yohanes Hutabalian, Ranganayakulu K. Vankayala, Chao-Chih Chen, Wen-Pin Hsieh, Horng-Tay Jeng, Da-Hua Wei, Yang-Yuan Chen
Summary: This study reports a strategy to enhance the performance of n-type Bi2Te2.7Se0.3 crystals up to ZT = 1.42 near room temperature through a two-stage process. By stabilizing Seebeck coefficient and optimizing phonon and carrier transport, a high power factor (PF) and ZT were achieved. This work offers a new approach to improve n-type layered thermoelectric materials.
Article
Chemistry, Multidisciplinary
Azimkhan Kozhakhmetov, Samuel Stolz, Anne Marie Z. Tan, Rahul Pendurthi, Saiphaneendra Bachu, Furkan Turker, Nasim Alem, Jessica Kachian, Saptarshi Das, Richard G. Hennig, Oliver Groning, Bruno Schuler, Joshua A. Robinson
Summary: This study reports the successful scalable growth and vanadium doping of 2D WSe2 at compatible temperatures, confirming p-type doping via substitutional replacement of tungsten by vanadium atoms. The p-type nature of the V dopants is further verified by constructed field-effect transistors.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Ceramics
Zhiyuan Liu, Yonggui Wang, Ting Yang, Zuju Ma, Huiyan Zhang, Hailing Li, Ailin Xia
Summary: By doping Ni in the Fe sites of p-type CeFe3.8Co0.2Sb12 skutterudite, impurity phases with high thermal conductivity can be reduced and carrier concentration can be regulated, leading to a significant increase in the Seebeck coefficient. The thermal conductivity is suppressed due to enhanced point defect phonon scattering and decreased hole concentration. The introduction of Ni doping results in a TE figure of merit ZT of 0.8, approximately 50% higher than that of a Ni-free sample. Thus, this study provides a strategy to synergistically optimize the electrical-thermal performances of skutterudites by alloying engineering.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Engineering, Electrical & Electronic
Suchitra Yadav, Sujeet Chaudhary, Dinesh K. Pandya
Summary: In this study, thin films of Co1-xFxSb3 were successfully synthesized using electrochemical deposition technique. By varying the concentration of Fe, the electrical and thermoelectric properties of the films were investigated. The main finding was that Fe substitution plays a crucial role in controlling the carrier effective mass and phonon scattering, ultimately leading to improved thermoelectric performance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ashish Kumar, K. M. Chaturvedi, Sahiba Bano, Bal Govind, D. K. Misra
Summary: Doping with Te on the Sb site decreases the lattice thermal conductivity and increases the power factor of ZrCoSb0.9-xSn0.1Tex alloys, leading to a significant improvement in ZT value.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Jianghe Feng, Ruiheng Liu, Xufeng Hou, Duo Liu, Bangrui Zhu, Yifeng Ling, Jing Zhou, Guojuan Qiu, Menghui Zhou, Juan Li, Baoguo Ren, Yang Huang
Summary: The study demonstrates the highly efficient synthesis of p-type Bi2Te3 using plasma-assisted ball milling. By obtaining finer nanopowders and higher in-plane texture, combined with Te liquid sintering to fabricate nano-/microscale hierarchical pores, the lattice thermal conductivity is reduced, resulting in high power factor and promising thermoelectric performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Ceramics
Adeel Abbas, Zhuoming Xu, Mohammad Nisar, Delong Li, Fu Li, Zhuanghao Zheng, Guangxing Liang, Ping Fan, Yue-Xing Chen
Summary: A study on the preparation of high-performance n-type polycrystalline SnSe using mechanical alloying and spark plasma sintering showed that iodine doping can increase carrier concentration and improve thermoelectric properties, leading to enhanced power factor and reduced thermal conductivity. The peak ZT of approximately 1.02 at 723 K with iodine doping of x = 0.02 was significantly higher than the undoped sample, demonstrating a potential for improved thermoelectric efficiency.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
H. Y. Hong, D. H. Kim, S. O. Won, J. K. Lee, S. D. Park, S. M. Choi, S. H. Bae, K. Park
Summary: By introducing Cu2-ySe nanoinclusions into the Bi0.86Ba0.14CuSeO matrix, the electrical conductivity and thermoelectric properties can be improved while reducing lattice thermal conductivity, leading to enhanced thermoelectric performance.
Increasing the content of Cu2-ySe significantly boosts the electrical conductivity of the composite materials, with the best dimensionless figure-of-merit achieved at x = 0.15.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Shaun R. Bruno, Colin K. Blakely, Jonathon B. Clapham, Joshua D. Davis, Wenli Bi, E. Ercan Alp, Viktor V. Poltavets
JOURNAL OF POWER SOURCES
(2015)
Editorial Material
Chemistry, Inorganic & Nuclear
Corey M. Thompson, Colin K. Blakely, Roxana Flacau, John E. Greedan, Viktor V. Poltavets
JOURNAL OF SOLID STATE CHEMISTRY
(2015)
Article
Chemistry, Physical
Jahangeer Ahmed, Viktor V. Poltavets, Jai Prakash, Saad M. Alshehri, Tansir Ahamad
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Inorganic & Nuclear
Colin K. Blakely, Shaun R. Bruno, Shannon K. Kraemer, Artem M. Abakumov, Viktor V. Poltavets
JOURNAL OF SOLID STATE CHEMISTRY
(2020)
Article
Multidisciplinary Sciences
John Arnold, Janelle Yen Nhi Do, Lainey C. Smith, Viktor Poltavets, Damon A. Smith
Summary: The experimental study involved heat-treating and grinding shrimp shell waste to obtain powder, which was then processed with different surface treatment agents to form composite granules for extrusion into filaments. The research focused on the thermal properties of the granules, the impact of surface treatment on covalent bonding, and the effects of surfactants on the extrusion process.
Article
Materials Science, Multidisciplinary
O. O. Bernal, D. E. MacLaughlin, G. D. Morris, P-C Ho, Lei Shu, C. Tan, J. Zhang, Z. Ding, K. Huang, V. V. Poltavets
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Michael Shabetai, Janelle Do
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Michael Shabetai, Janelle Do, Viktor Poltavets
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Joshua Davis, Michelle Johannes
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Joshua Davis, Shannon Kraemer
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Joshua Davis, Shaun Bruno, Colin Blakely
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Hamed Hajibabaei
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor Poltavets, Shannon Kraemer
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Meeting Abstract
Chemistry, Multidisciplinary
Viktor V. Poltavets, Shannon K. Kraemer
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Article
Materials Science, Multidisciplinary
Mengjiao Dong, Liyun Liao, Chensheng Li, Yingxiao Mu, Yanping Huo, Zhong-Min Su, Fushun Liang
Summary: This study investigates the influence of the polarity of polymer matrices on persistent room-temperature phosphorescence (pRTP). It is discovered that intense phosphorescence emission can be achieved in highly polar matrices such as polyacrylic acid (PAA). The dipole-dipole interaction between the polar fluorophore and polar matrix is proposed to stabilize the excited state and facilitate the generation of efficient room-temperature phosphorescence emissions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Han-Jiang Yang, Weijia Xiang, Xiangzhou Zhang, Jin-Yun Wang, Liang-Jin Xu, Zhong-Ning Chen
Summary: This article reports a 2D copper(I)-based cluster material for X-ray imaging, which exhibits ultra-high spatial resolution, high photoluminescence efficiency, and low detection limit. The material shows excellent linear response to X-ray dose rates and light output, and has the best spatial resolution among reported lead-free metal halide hybrids.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Review
Materials Science, Multidisciplinary
Taek Joon Kim, Sang-hun Lee, Dayeong Kwon, Jinsoo Joo
Summary: Donor-acceptor heterostructures using organic-inorganic halide perovskites, two-dimensional transition metal dichalcogenides, pi-conjugated organic small/macro molecules, and quantum dots are promising platforms for exciton-based photonics and optoelectronics. Hetero-interlayer excitons and hetero-intermolecular excitons formed through optical and/or electrical charge transfer in various heterostructures are important quasi-particles for light emission, detection, and harvesting systems.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Liemao Cao, Xiaohui Deng, Zhen-kun Tang, Rui Tan, Yee Sin Ang
Summary: We investigate the interface properties between WSi2N4 and Mo2B, O-modified Mo2B, and OH-modified Mo2B nanosheets. We find that WSi2N4 and Mo2B form n-type Schottky contacts, while functionalizing Mo2B with O and OH leads to the formation of both n-type and p-type ohmic contacts with WSi2N4. Additionally, we demonstrate the emergence of quasi-ohmic contact with ultralow lateral Schottky barrier and zero vertical interfacial tunneling barriers in Mo2B(OH)2-contacted WSi2N4.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ga Eun Kim, Hae-Jin Kim, Heesuk Jung, Minwoo Park
Summary: This study presents a solution to the commercialization challenges of flexible LEDs based on MAPbBr(3) by incorporating polyurethane and an In-Ga-Zn-Sn liquid alloy. The designed devices showed high flexibility, efficiency, and durability, with improved electron injection and reduced defects, making them promising for next-generation displays.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tao Shen, Zeng Wu, Zhen Jiang, Dongsheng Yan, Yan Zhao, Yang Wang, Yunqi Liu
Summary: Sidechain engineering is an important molecular design strategy for tuning the solid-state packing and structural ordering of conjugated polymers. The effects of sidechain direction on the optoelectronic properties of polymers and device performance were systematically investigated in this study. The results demonstrate that tuning the sidechain substitution direction can effectively improve the molecular structure and light absorption properties of polymers, providing new insights for the rational design of functional polymers.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Lotte Clinckemalie, Bapi Pradhan, Roel Vanden Brande, Heng Zhang, Jonathan Vandenwijngaerden, Rafikul Ali Saha, Giacomo Romolini, Li Sun, Dirk Vandenbroucke, Mischa Bonn, Hai I. Wang, Elke Debroye
Summary: In this study, a facile strategy using a non-conductive polymer was proposed to fabricate stable, pinhole-free thick films. The effect of introducing a second phase into CsPbBr3 perovskite crystals on their photophysical properties and charge transport was investigated. The dual phase devices exhibited improved stability and more effective operation at higher voltages in X-ray detection.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jingye Zou, Shenglan Hao, Pascale Gemeiner, Nicolas Guiblin, Omar Ibder, Brahim Dkhil, Charles Paillard
Summary: When rare-earth ions are embedded in a ferroelectric material, their photoluminescence can serve as an all-optical probe for temperature, electric field, and mechanical stimulus. However, the impact of ferroelectric phase transitions on photoluminescence is not well understood. In this study, we demonstrate changes in the photoluminescence of green emission bands during critical ferroelectric transitions in an Er-doped BaTiO3 material. We also find that the intensity ratio and wavelength position difference of sub-peaks provide information on the phase transitions.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Jiangchao Han, Daming Zhou, Wei Yang, Chen Lv, Xinhe Wang, Guodong Wei, Weisheng Zhao, Xiaoyang Lin, Shengbo Sang
Summary: Rare type-II spin-gapless semiconductors (SGSs) have attracted increasing attention due to their unique spin properties. In this study, the interface contacts and spin transport properties of different devices composed of VSi2P4 ferromagnetic layers were investigated. The results show that VSi2P4 is a promising material for designing vertical van der Waals heterostructures with a giant tunnel magnetoresistance (TMR) in spintronic applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Tianqi Zhao, Renagul Abdurahman, Qianting Yang, Ruxiangul Aiwaili, Xue-Bo Yin
Summary: In this study, we designed and prepared Cr and Ba-doped gamma-Ga2O3 nanoparticles to achieve near-infrared emission and enhance the emission intensity. The emission mechanism was proposed based on the trap depth, band gap, and energy levels of Cr ions. The ratiometric temperature sensing and encryption information transfer demonstrated the potential applications of this technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Shuvankar Gupta, Jyotirmoy Sau, Manoranjan Kumar, Chandan Mazumdar
Summary: In this study, a new spin-gapless semiconductor material CoFeMnSn is reported, and its stable structure and spin-polarized band structure are determined through experimental realization and theoretical calculations. The compound exhibits a high ferromagnetic transition temperature, making it excellent for room temperature applications. The nearly temperature-independent resistivity, conductivity, and carrier concentration of the compound, adherence to the Slater-Pauling rule, and the high intrinsic anomalous Hall conductivity achieved through hole doping further confirm its spin-gapless semiconductor nature. Additionally, the compound's SGS and topological properties make it suitable for spintronics and magneto-electronics devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Ikumi Aratani, Yoji Horii, Yoshinori Kotani, Hitoshi Osawa, Hajime Tanida, Toshiaki Ina, Takeshi Watanabe, Yohko F. Yano, Akane Mizoguchi, Daisuke Takajo, Takashi Kajiwara
Summary: In this study, two-dimensional arrays of single-molecule magnets (SMMs) based on metal-organic frameworks (MOFs) were systematically modified through Langmuir-Blodgett methods and chemical modifications. The introduction of bulky alkoxide groups induced structural changes and perpendicular magnetic anisotropy. This research provides a promising strategy for the construction of high-density magnetic memory devices using molecular spintronics.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Zonghao Lei, Houhe Dong, Lijie Sun, Bing Teng, Yanfei Zou, Degao Zhong
Summary: Researchers have successfully developed four different up-conversion phosphors based on the Eulytite-type host Ba3Yb(PO4)(3). The optical temperature sensing properties of these phosphors were thoroughly investigated, and it was found that Ba3Yb(PO4)(3):Tm/Er/Ho showed potential for optical temperature measurement applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
C. Roncero-Barrero, M. A. Carvajal, J. Ribas-Arino, I. de P. R. Moreira, M. Deumal
Summary: This study computationally investigates the conductivity of four isostructural compounds with different Se contents, and reveals the parameters that define their conductivity in stable organic radical materials. The results provide insights into the influence of Se content on the conductivity and highlight the importance of considering multiple parameters in understanding the trends in conductivity.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)
Article
Materials Science, Multidisciplinary
Remi Arras, Kedar Sharma, Lionel Calmels
Summary: In this study, we investigated the interplay between structural defects in NiFe2O4, showing that the complex formed by a Ni-Oh/Fe-Td-cation swap and a neutral oxygen vacancy is more stable than these two isolated defects, and significantly reduces the width of the minority-spin band gap.
JOURNAL OF MATERIALS CHEMISTRY C
(2024)