Article
Chemistry, Physical
Maxwell Wood, Michael Y. Toriyama, Shristi Dugar, James Male, Shashwat Anand, Vladan Stevanovic, G. Jeffrey Snyder
Summary: The study reveals that controlling doping efficiency by preparing doped samples in specific regions can lead to high thermoelectric figure of merit zT in Sn-doped ZnSb. Calculations using density functional theory indicate that the doping efficiency is limited by the solubility of Sn in ZnSb.
ADVANCED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Tianyao Weng, Zhili Li, Yang Li, Yao Hu, Kai Guo, Tao Liu, Jianxin Zhang, Wanyu Lyu, Lili Xi, Xinxin Yang, Ying Jiang, Jiong Yang, Jiye Zhang, Jun Luo
Summary: Vacancy engineering offers an effective approach to optimize the carrier concentration in thermoelectric materials, leading to improved thermoelectric performance by manipulating the vacancies in the material.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Sai Yang, Tingting Deng, Pengfei Qiu, Tong Xing, Jun Cheng, Zhicheng Jin, Peng Li, Xun Shi, Lidong Chen
Summary: In this study, high zT and good stability were successfully integrated in (Ag, Cd)-containing ZnSb compounds, achieving a peak zT comparable to Zn4Sb3-based compounds. Introducing Ag and Cd does not degrade the stability of ZnSb, as confirmed by current stress test.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Guoxiang Wang, Yawen Zhang, Andriy Lotnyk, Haizhou Shi, Chen Chen
Summary: The study focuses on the IMT behavior in ZnSb-SnTe materials, which contributes to high thermoelectric performance by regulating electrical transport. SnTe doping at 27.3at% reduces the phase transition temperature, enabling the realization of IMT in (ZnSb)(72.7)(SnTe)(27.3) films, with Sn atoms diffusing into ZnSb to form SnSb nano-crystallites during phase transition.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Vaskuri C. S. Theja, Vaithinathan Karthikeyan, Sanjib Nayak, Kadir Ufuk Kandira, Dani S. Assi, Venkataramanan Kannan, Vellaisamy A. L. Roy
Summary: This study systematically investigated the effect of γ-Al2O3 nano-inclusions on ZnSb. The results showed that composite engineering reduced thermal conductivity through lattice phonon scattering and enhanced the Seebeck coefficient through low-energy carrier filtering. The figure of merit of the ZnSb+5% γ-Al2O3 sample at 673K was nearly two-fold higher than that of the pristine sample.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Manojkumar Moorthy, Bhuvanesh Srinivasan, David Berthebaud, Rajasekar Parasuraman, R. Althaf, Suresh Perumal
Summary: In this work, the authors studied the thermoelectric properties of p-type layered chalcostibite CuSb1-xPbxSe2 (x = 0-0.10) compounds prepared by vacuum melting reaction and uniaxial hot press in the temperature range of 323-623 K. The introduction of aliovalent Pb2+ doping at Sb3+ site significantly increased the hole concentration and enhanced the electrical conductivity. Moreover, the total thermal conductivity was greatly reduced, leading to a threefold increase in the thermoelectric figure of merit, zT, for the composition of CuSb0.90Pb0.10Se2 at 623 K compared to undoped CuSbSe2. Additionally, the material exhibited a high hardness value, indicating its potential as an efficient thermoelectric material for intermediate temperature.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Reshma K. Madathil, Vincent Thoreton, Oystein Prytz, Truls Norby
Summary: Thermoelectric ZnSb has a native surface oxide layer of Sb2O5 +ZnO. High-temperature oxidation in air results in selective oxidation to ZnO, with no detectable Sb by STEM-EDS. The oxidation process follows parabolic kinetics and is influenced by both Zn and O diffusion through the protective ZnO layer.
Article
Chemistry, Multidisciplinary
Sevan Chanakian, Wanyue Peng, Vanessa Meschke, A. K. M. Ashiquzzaman Shawon, Jesse Adamczyk, Valeri Petkov, Eric Toberer, Alexandra Zevalkink
Summary: The influence of vacancies on the thermal and electronic properties of EuCu1-xZn0.5xSb solid solution is investigated. It is found that vacancies cause lattice softening and decrease lattice thermal conductivity. In addition, vacancies also result in changes in electronic properties, including an increase in effective mass, a large increase in band gap, and a decrease in carrier concentration. Consequently, the maximum zT increases from 0.09 to 0.7.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Shan Li, Xingce Fang, Tu Lyu, Jiahui Cheng, Weiqin Ao, Chaohua Zhang, Fusheng Liu, Junqin Li, Lipeng Hu
Summary: This study reports on the constructive role of antisite defect manipulation in enhancing the thermoelectric performance of Bi0.4Sb1.6Te3 and presents a method for fine-tuning antisite defects through chemical composition adjustment. Furthermore, it demonstrates that multiscale microstructures induced by gallium doping and hot deformation can reduce lattice thermal conductivity.
MATERIALS TODAY PHYSICS
(2022)
Article
Chemistry, Physical
Immanuel Paulraj, Vinothkumar Lourdhusamy, Zong-Ren Yang, Chia-Hsin Wang, Chia- Jyi Liu
Summary: A new feasible strategy is adopted to fabricate hybrid inorganic-organic composites by soaking ZnSb in EG-treated PEDOT:PSS solution. The composites exhibit improved properties such as decreased lattice constants, increased bulk density, and decreased porosity with increasing soaking days. The hybrid ZnSb/EG-treated PEDOT:PSS composite with a soaking time of 30 days shows a higher power factor and lower thermal conductivity, resulting in an improved magnitude of zT (0.71 at 525 K).
JOURNAL OF POWER SOURCES
(2023)
Article
Physics, Condensed Matter
Appala Naidu Gandi, Nishant Dahare
Summary: Transport equations for phonons and electrons were solved to understand the thermoelectric transport in ZnSb. Poor bonding characteristics of phonons were reflected in low frequencies and low group velocities, estimated within the harmonic approximation. The overlap between low-frequency optical branches and acoustic branches increased the scattering phase space. The anharmonic behavior of ZnSb, indicated by estimated mode Gruneisen parameters and low self-consistent phonon lifetimes, contributed to its low thermal conductivity. The optimum doping concentration for the thermoelectric figure of merit was found to be approximately 5 x 1018 per cm3. The asymmetry in the distribution of the density of states near the band edges also contributed to hole-dominated thermoelectric transport in the intrinsic region.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
Yifang Huang, Chen Chen, Weiming Zhang, Xiaofang Li, Wenhua Xue, Xinyu Wang, Yijie Liu, Honghao Yao, Zongwei Zhang, Yue Chen, Feng Cao, Xingjun Liu, Yumei Wang, Qian Zhang
Summary: This paper reports a new Zintl-phase thermoelectric material BaAgSb, which achieved a high ZT value through doping and defect engineering to improve its thermoelectric performance.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Physical
Junsang Cho, Taegyu Park, Ki Wook Bae, Hyun-Sik Kim, Soon-Mok Choi, Sang-il Kim, Sung Wng Kim
Summary: The addition of titanium can effectively reduce the grain size of Hf0.5Zr0.5NiSn0.98Sb0.02 half-Heusler compound, resulting in extremely low lattice thermal conductivity across the entire temperature range, and achieving the maximum thermoelectric figure of merit at 800 K.
Article
Nanoscience & Nanotechnology
Hanhwi Jang, Stanley Abbey, Brakowaa Frimpong, Chien Viet Nguyen, Pawel Ziolkowski, Gregor Oppitz, Moohyun Kim, Jae Yong Song, Ho Sun Shin, Yeon Sik Jung, Min-Wook Oh
Summary: A comparative study of the electronic transport properties of Sb2Si2Te6 and Bi2Si2Te6 reveals that Bi2Si2Te6 is significantly affected by phase boundary scattering, while Sb2Si2Te6 is relatively unaffected. Furthermore, extensive point defect scattering in Sb2Si2Te6 significantly reduces its thermal conductivity and results in high zT values.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Vaithinathan Karthikeyan, Saw Lin Oo, James Utama Surjadi, Xiaocui Li, Vaskuri C. S. Theja, Venkataramanan Kannan, Siu Chuen Lau, Yang Lu, Kwok-Ho Lam, Vellaisamy A. L. Roy
Summary: Optimizing intrinsic defects in polycrystalline SnSe through controlled alpha irradiation can lead to a high zT value of 2.4 at 800 K, along with significantly reducing lattice thermal conductivity. This strategy of intrinsic defect engineering shows great potential in increasing the practical implementation of low-cost and high-performance thermoelectric generators.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Song Zhang, Qingfang Xu, Zhiying Hu, Peipei Zhu, Rong Tu, Lianmeng Zhang, Mingxu Han, Takashi Goto, Jiasheng Yan, Sijun Luo
CERAMICS INTERNATIONAL
(2016)
Review
Materials Science, Multidisciplinary
Sijun Luo, Song Zhang, Briley B. Bourgeois, Brian C. Riggs, Kurt A. Schroder, Yueheng Zhang, Jibao He, Shiva Adireddy, Kai Sun, Joshua T. Shipman, Moses M. Oguntoye, Venkata Puli, Wei Liu, Rong Tu, Lianmeng Zhang, Stan Farnsworth, Douglas B. Chrisey
JOURNAL OF MATERIALS RESEARCH
(2017)
Article
Materials Science, Multidisciplinary
Wang Chnanbin, Luo Sijun, Shen Qiang, Hu Mingzhe, Zhang Lianmeng
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
(2018)
Article
Nanoscience & Nanotechnology
Briley Bourgeois, Sijun Luo, Brian Riggs, Yaping Ji, Shiva Adireddy, Kurt Schroder, Stan Farnsworth, Douglas Chrisey, Matthew Escarra
Article
Physics, Applied
Venkata Sreenivas Puli, Dhiren K. Pradhan, Indrani Coondoo, Neeraj Panwar, Shiva Adireddy, Sijun Luo, Ram S. Katiyar, Douglas B. Chrisey
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Physics, Applied
Sijun Luo, Aline Fluri, Song Zhang, Xue Liu, Max Dobeli, George F. Harrington, Rong Tu, Daniele Pergolesi, Tasumi Ishihara, Thomas Lippert
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Sijun Luo, George F. Harrington, Kuan-Ting Wu, Thomas Lippert
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2020)
Article
Materials Science, Multidisciplinary
Sijun Luo, George F. Harrington, Kuan-Ting Wu, Daniele Pergolesi, Thomas Lippert
Summary: This study reports the heteroepitaxial growth of a hexagonal delafossite CuFeO2 thin film on a cubic perovskite SrTiO3 substrate, demonstrating translational and rotational domain matching epitaxy. The thin film exhibits high crystalline quality with a possible indirect optical bandgap of 1.43 eV or direct optical bandgap of 1.94 eV.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Fatima Haydous, Sijun Luo, Kuan-Ting Wu, Craig Lawley, Max Dobeli, Tatsumi Ishihara, Thomas Lippert
Summary: Perovskite oxynitride semiconductors have emerged as promising photoelectrode materials for photoelectrochemical water splitting, with their surface characteristics and evolution playing a significant role in their PEC applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Sijun Luo, Lukas Trefflich, Susanne Selle, Ron Hildebrandt, Evgeny Krueger, Stefan Lange, Jingjing Yu, Chris Sturm, Michael Lorenz, Holger Von Wenckstern, Christian Hagendorf, Thomas Hoeche, Marius Grundmann
Summary: This paper reports the heteroepitaxial growth of (00.1)-oriented Zn2GeO4 thin films on c-plane sapphire substrates using pulsed laser deposition. The thin films exhibit [11.0] Zn2GeO4// [11.0] Al2O3 and [1(1) over bar.0] Zn2GeO4//[1(1) over bar.0] Al2O3 in-plane orientation relationships. The measured properties include a rocking curve full width at half maximum of 0.35 degrees, a direct bandgap of 4.9 +/- 0.1 eV, and a defect-related photoluminescence emission centered at 2.62 eV with a FWHM of 0.55 eV. This study enhances our understanding of the physical properties and potential device application of Zn2GeO4 thin films.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Madhu Gaire, Kun Liang, Sijun Luo, Binod Subedi, Shiva Adireddy, Kurt Schroder, Stan Farnsworth, Douglas B. Chrisey
Article
Materials Science, Ceramics
Qilong Guo, Caio Juvencio Da Silva, Mei Lin, Sijun Luo, Junjun Pei, Xiaoqing Wang, Junguo Li, Lianmeng Zhang
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2019)
Article
Materials Science, Ceramics
Qilong Guo, Caio Juvencio Da Silva, Briley Bourgeois, Sijun Luo, Hanghai Ma, Junguo Li, Lianmeng Zhang
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN
(2018)
Article
Materials Science, Ceramics
Qilong Guo, Caio V. Juvencio da Silva, Briley B. Bourgeois, Sijun Luo, Hanghai Ma, Junguo Li, Lianmeng Zhang
CERAMICS INTERNATIONAL
(2017)
Article
Materials Science, Multidisciplinary
Briley B. Bourgeois, Sijun Luo, Brian C. Riggs, Shiva Adireddy, Douglas B. Chrisey
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2017)
