Article
Chemistry, Physical
Qidong Zhang, Lili Xi, Jiye Zhang, Chenyang Wang, Li You, Shanshan Pan, Kai Guo, Zhili Li, Jun Luo
Summary: In this study, the effects of Ag substitution on the phase stability and thermoelectric properties of Zn2Cu3In3Te8 compound were investigated. It was found that only the In sites show appreciable tolerance for Ag doping, leading to improved electrical transport properties and reduced lattice thermal conductivity. The optimal composition Zn2Cu3In2.8Ag0.2Te8 demonstrated a maximum zT value of 0.62 at 823 K, representing a 43% improvement compared to the pristine sample.
JOURNAL OF MATERIOMICS
(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
Engineering, Electrical & Electronic
Niloy Chandra Saha, Seong-Woo Kim, Koji Koyama, Toshiyuki Oishi, Makoto Kasu
Summary: In this study, a NO2 p-type doped and Al2O3 bilayer passivated diamond metal-oxide-semiconductor field-effect transistor (MOSFET) was fabricated on a misoriented heteroepitaxial diamond substrate. The MOSFET exhibited a high breakdown voltage of 3659 V, the highest reported among diamond MOSFETs. MOSFETs with a gate length of 2.5 μm showed a maximum drain current density of 372 mA/mm and a maximum available power density (Baliga's figure-of-merit) of 173 MW/cm(2). Moreover, the maximum mobility was estimated to be 187 cm(2)/V center dot s, and the subthreshold swing was 189 mV/dec. This study explores the prospects of misoriented heteroepitaxial diamonds in power electronic device applications.
IEEE ELECTRON DEVICE LETTERS
(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
Engineering, Environmental
Zhe Guo, Kun Song, Zipeng Yan, Peng Sun, Xiaojian Tan, Gang Wu, Qiang Zhang, Guo-Qiang Liu, Bo Yu, Jun Jiang
Summary: The study shows that the tiny Pb-doped Bi0.4Sb1.6Te3 significantly enhances the thermoelectric performance, reduces lattice thermal conductivity, and achieves excellent ZT values at high temperatures. The constructed thermoelectric module can achieve high energy conversion efficiency.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Zhiqiang Gao, Qingyu Yang, Pengfei Qiu, Tian-Ran Wei, Shiqi Yang, Jie Xiao, Lidong Chen, Xun Shi
Summary: This study reports the first p-type plastic inorganic TE material, which achieved both good plasticity and p-type conduction by alloying Cu in n-type plastic Ag2S0.7Se0.3. The hexagonal structure (Ag0.2Cu0.8)(2)S0.7Se0.3 exhibited a maximum zT of 0.42 at 800 K, and by introducing Cu deficiencies, the maximum zT was greatly enhanced to 0.95 at 800 K, a record-high value for plastic TE materials.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Zheng Fan, Jisheng Liang, Jun-Liang Chen, Ying Peng, Huajun Lai, Jian Nong, Chengyan Liu, Wangyang Ding, Lei Miao
Summary: This study presents a new strategy for enhancing the thermoelectric properties of p-type SiGe in the mid-temperature region by incorporating nano-TaC and optimizing the amount of TaC in the SiGe matrix using ball milling and spark plasma sintering. The power factors were significantly increased due to the modulation doping effect of SiGe with TaC, while the thermal conductivity was greatly decreased by the ensemble effect of the nanostructure. As a result, a high ZT of 1.06 was achieved at 873 K, which is 64% higher than that of a typical radioisotope thermoelectric generator.
JOURNAL OF MATERIOMICS
(2023)
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
Biochemistry & Molecular Biology
Xinru Ma, Xuxia Shai, Yu Ding, Jie Zheng, Jinsong Wang, Jiale Sun, Xiaorui Li, Weitao Chen, Tingting Wei, Weina Ren, Lei Gao, Shukang Deng, Chunhua Zeng
Summary: Researchers synthesized a series of PbSe(NaCl)(x) samples and improved their electrical transport properties by manipulating the carrier concentration through adjusting the content of NaCl. A high thermoelectric figure of merit of 1.26 at 690 K was achieved in PbSe(NaCl)(4.5), suggesting potential applications in thermoelectric conversion.
Article
Materials Science, Composites
Kaihua Zhu, Zhao Hu, Guangming Chen
Summary: This study proposes the use of spiro-bifluorene derivatives for p-type doping to enhance the thermoelectric performance of single-walled carbon nanotubes (SWCNTs). The mechanism of effective p-type doping and strong interfacial interaction is elucidated through calculated energy levels, SWCNT surface coating, and photophysical spectroscopic measurements. Additionally, a thermoelectric device connected in series demonstrates its performance at a certain temperature gradient.
COMPOSITES COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Yue-Xing Chen, Xiao-Lei Shi, Zhuang-Hao Zheng, Fu Li, Wei-Di Liu, Wen-Yi Chen, Xin-Ru Li, Guang-Xing Liang, Jing-Ting Luo, Ping Fan, Zhi-Gang Chen
Summary: This study introduces p-type two-dimensional WSe2 nanoinclusions into n-type polycrystalline SnSe for the formation of p-n junctions, resulting in enhanced thermoelectric performance through phonon scattering and Fermi level control.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Inorganic & Nuclear
Arslan Ashfaq, Elsammani Ali Shokralla, Adnan Ali, Michael M. Sabugaa, Mohamed Abdelsabour Fahmy, Shaimaa A. M. Abdelmohsen, M. Yasir Ali, Adnan Baig, Obaidallah A. Algethami, Mohamed Abboud
Summary: Lead-free tin telluride (SnTe) thin films were systematically analyzed for their thermoelectric power factor through structural, morphological, and thermoelectric property measurements. The results showed that Sr-doping and post-annealing treatment can significantly enhance the thermoelectric properties by modifying band structure and introducing energy-filtering effect at grain boundaries. The highest power factor achieved was 29.4 mu Wm-1K- 2 at 523 K for Sn0.7Sr0.3Te thin films post-annealed at 1073 K, which was three times greater than that of pure SnTe.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Niloy Chandra Saha, Tomoki Shiratsuchi, Toshiyuki Oishi, Makoto Kasu
Summary: This study reports the effects of forward bias AC stress on NO2 p-type doped and Al2O3 layer passivated diamond MOSFETs. The results show stable AC operation for 100 hours without degradation in the output drain current. Long-term stress leads to the entry of negative charges into the Al2O3 layer, causing a temporary increase in the gate leakage current that gradually disappears after the withdrawal of stress. This study demonstrates the feasibility of long-term stable operation of diamond MOSFETs in power circuit applications.
IEEE ELECTRON DEVICE LETTERS
(2023)
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
Chemistry, Multidisciplinary
Ashfia Huq, Melanie Kirkham, Peter F. Peterson, Jason P. Hodges, Pamela S. Whitfield, Katharine Page, Thomas Hugle, Erik B. Iverson, Andre Parizzi, George Rennich
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2019)
Article
Chemistry, Physical
F. X. Zhang, Y. Tong, M. Kirkham, A. Huq, H. Bei, W. J. Weber, Y. Zhang
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Physics, Applied
Krishna Chaitanya Pitike, Andres E. Marquez-Rossy, Alexis Flores-Betancourt, De Xin Chen, K. C. Santosh, Valentino R. Cooper, Edgar Lara-Curzio
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Ceramics
Edgar Lara-Curzio, Ercan Cakmak, Lianshan Lin, Andres E. Marquez-Rossy, Beth Armstrong, Alexis Flores-Betancourt, Antonio Macias
Summary: The study found that the residual stresses on the outer surface of the dense yttria-stabilized zirconia (YSZ) layer were compressive, increased with decreasing temperature, and exhibited nonlinear temperature dependence, particularly below 600 degrees C. An elastic model incorporating micromechanics and laminate theory successfully predicted this nonlinearity, considering the order-disorder transition of YSZ around 600 degrees C and the magnetic transition of NiO at the Neel temperature around 265 degrees C. The implications of these findings for the reliability of solid oxide fuel cells are discussed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Jian Peng, Yukinori Yamamoto, Jeffrey A. Hawk, Edgar Lara-Curzio, Dongwon Shin
NPJ COMPUTATIONAL MATERIALS
(2020)
Article
Chemistry, Inorganic & Nuclear
Robert L. Sacci, Rebecca D. McAuliffe, Thomas F. Malkowski, Nathan Kidder, X. Chelsea Chen, Ashfia Huq, Melanie Kirkham, Beth L. Armstrong, Luke L. Daemen, Gabriel M. Veith
Summary: This work presents a new method to quickly incorporate lithium and stabilize the ionic conducting garnet phase by decoupling the formation of a La-Zr-O network from the addition of lithium. By synthesizing La2Zr2O7 nanoparticles to which LiNO3 was added, the method produces a porous high-Li-ion-conducting cubic phase within an hour, which can be used as a starting structure for a composite electrolyte.
INORGANIC CHEMISTRY
(2021)
Article
Materials Science, Ceramics
Corson L. Cramer, Amy M. Elliott, Edgar Lara-Curzio, Alexis Flores-Betancourt, Michael J. Lance, Lu Han, Jesse Blacker, Artem A. Trofimov, Hsin Wang, Ercan Cakmak, Kashif Nawaz
Summary: The ceramic composite materials fabricated by BJ3DP with SiC powders and additional treatments exhibited low porosity, high Young's modulus, and flexural strength after two cycles, but diminishing returns were observed with more cycles due to reaction choking and residual carbon and porosity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Vladislav V. Klepov, Kristen A. Pace, Anna A. Berseneva, Justin B. Felder, Stuart Calder, Gregory Morrison, Qiang Zhang, Melanie J. Kirkham, David S. Parker, Hans-Conrad zur Loye
Summary: The study investigated the magnetism of CsMn2+Mn3+F6 compound and found a magnetic transition at 24.1 K. The magnetic structure of CsMn2F6 was determined using powder neutron diffraction, revealing successive long-range ordering of Mn2+ and Mn3+ sites, accompanied by a second transition. The role and strength of magnetic exchange interactions were characterized using DFT calculations.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Sungjin Kim, Md Anisur Rahman, Md Arifuzzaman, Dustin B. Gilmer, Bingrui Li, Jackson K. Wilt, Edgar Lara-Curzio, Tomonori Saito
Summary: This study introduces a circular model of plastic manufacturing by upcycling common plastic ABS into recyclable and robust ABS-vitrimer using accessible and scalable fused filament fabrication technique. The successful development of fully processable ABS-vitrimer overcomes the challenge of reprinting cross-linked materials and enables the direct printing of stronger, tougher, and solvent-resistant 3D objects from unsorted plastic waste.
Article
Materials Science, Ceramics
Takaaki Koyanagi, Omer Karakoc, Charles Hawkins, Edgar Lara-Curzio, Christian Deck, Yutai Katoh
Summary: SiC-fiber-reinforced SiC matrix composite cladding for light water reactor fuel elements is commonly used, but its behavior under high-temperature steam conditions is not well understood. This study conducted stress-rupture tests and found that the failure lifetime of SiC composite cladding in steam environments is relatively short, possibly due to the slow crack growth in fibers caused by steam oxidation.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Energy & Fuels
G. Gurieva, V Rotaru, K. Emits, N. Siminel, A. ManjOn-Sanz, M. Kirkham, A. Perez-Rodriguez, M. Guc, D. Meissner, S. Schorr
Summary: Kesterite-type thin film solar cell technologies based on polycrystalline absorber layers are commonly used. However, the use of Cu2ZnSn(SxSe1-x)(4) (CZTSSe) monograins in a polymer matrix offers a promising low cost alternative. In this study, neutron diffraction and Raman scattering spectroscopy were used to analyze the influence of Cu/Zn disorder, stoichiometry deviations, and intrinsic point defects on CZTSSe monograins.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Materials Science, Ceramics
Bola Yoon, Dylan Richardson, Saad A. Jajja, Corson L. Cramer, Michael J. Lance, Kashif Nawaz, Edgar Lara-Curzio
Summary: A study investigated the environmental stability of materials in hybrid energy systems and focused on siliconized silicon carbide (Si-SiC) prepared via additive manufacturing. The results showed that the oxide scales formed on the surface were dense and continuous, but exhibited some cracking due to thermal expansion mismatches. The study discussed the potential effects of silica volatilization induced by water vapor and silica reduction when exposed to hydrogen, and concluded that the oxide scale is expected to provide protection in hybrid power generation systems.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Energy & Fuels
Ercan Cakmak, James C. Hower, Jonathan P. Mathews, Matthew C. Weisenberger, Rachel Kaplan, Justin Lacy, Yuxuan Zhang, Edgar Lara-Curzio
Summary: This study investigates the use of coals as raw materials for carbon fiber precursor production. Microstructural characterization and preliminary digestion studies were conducted on different types of bituminous and subbituminous coals. The results show that the bituminous coals have higher coal conversion efficiency compared to the subbituminous coal. These findings provide a framework for further research in this new coal utilization approach.
Article
Materials Science, Multidisciplinary
Kai Li, Tyler Smith, William Asher, Alexis Flores-Betancourt, Artem A. Trofimov, Hsin Wang, Mingkan Zhang, Logan Kearney, Edgar Lara-Curzio, Soydan Ozcan, Vlastimil Kunc, Amit K. Naskar, Kashif Nawaz
Summary: The study finds that PETG composites produced through 3D printing have anisotropic thermal conductivity and low CTE at room temperature, making them potentially suitable for heat exchanger applications at low temperatures.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Robert L. Sacci, Tyler H. Bennett, Andrew R. Drews, Venkataramani Anandan, Melanie J. Kirkham, Luke L. Daemen, Jagjit Nanda
Summary: Certain rare-earth alkali halides exhibit high lithium ion conductivity, which is related to crystal phase stability, ordering of lithium sublattice, and residual H2O content. Li3InCl6 can be synthesized through controlled dehydration, with the dehydration process leading to multiple phase transitions and grain boundary formation.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
