Results 141 to 150 of about 68,008 (313)

Off-centering effect and crystal symmetry modification lead to high thermoelectric performance in diamondoid Cu₂SnSe₃

National Science Open
Recently, dimensionless figure of merit (ZT) beyond 1.0 has been demonstrated in diamondoid Cu2SnSe3, positioning it as a low-cost and ecofriendly thermoelectric alternative, and sparking intense interest in further optimizing its thermoelectric ...
Chen Pengpeng, Bai Shulin, Wen Yi, Li Yichen, Zhao Zihao, Gao Dezheng, Huang Houdong, Hu Yixuan, Gao Tian, Wang Lei, Zhan Shaoping, Gao Xiang, Su Xianli, Xie Hongyao, Zhao Li-Dong   +14 more
doaj   +1 more source

Ceramic-based thermoelectric materials processed by laser

, 2019
Today a particular interest is given to the oxide-based thermoelectric materials, due to enhanced thermal and redox stability, attractive properties at high temperature, together with the absence of toxicity, and natural abundance of the constituent ...
Kovalevsky, A. V., Madre, M. A., Sotelo, A., Costa, F. M., Ferreira, N. M.   +4 more
core  

Theoretical investigation of thermoelectric properties of bulk and nano-scaled semiconductors [PDF]

, 2012
Even though thermoelectric effects have drawn more attention these days due to environmental and economic reasons, the efficiency of the thermoelectric technology is still limited by currently available thermoelectric materials.
Park, Kyeong Hyun
core  

Defect Driven Electronic Structure Reconfiguration and Hierarchical Phonon Suppression in Ag2Se Thermoelectrics

Advanced Science, EarlyView.
Indium substitution in Ag2Se nanocrystals simultaneously tailors electronic structure and lattice dynamics. Fermi‐level upshift and band‐gap narrowing enhance electrical transport, while defect‐induced lattice softening intensifies phonon scattering and suppresses lattice thermal conductivity.
Yineng Gou, Mengyao Li, Fang Lyu, Xiaolong Sun, Muyang Huang, Wenhao Xie, Liangwei Hu, Wei Cao, Yue Hou, Yong Liu, Andreu Cabot, Ziyu Wang   +11 more
wiley   +1 more source

Achieving superior thermoelectric transport in bismuth antimony telluride thin films via orientation and microstructure regulation

National Science Open
The electron-phonon transport properties of bismuth telluride-based thermoelectric materials are significantly influenced by crystallographic orientation and microstructure engineering. Thin-film materials are proper candidates for the study of structure-
Qu Youyang, Zhao Bing, Zhao Weiyun, Deng Yuan   +3 more
doaj   +1 more source

Thermoelectric Gating Organic Electrochemical Transistors Enabled by Printable Ionogels With n‐p Convertible Thermopower

Advanced Science, EarlyView.
A type of thermoelectric ionogels with convertible n‐p thermopowers are demonstrated with Seebeck coefficients ranging from ‐3.61 to +9.74 mV K−1. Thus, thermoelectric gating organic electrochemical transistor is achieved by employing ionogel as thermoelectric modules and ionic dielectrics simultaneously, paving the road to self‐powered, highly ...
Xingyu Hu, Xinwen Yan, Ling Huang, Xiaohang Zhang, Xuan Cao, Cong Zhang, Qingqing Sun, Hanyu Jia, Xuying Liu   +8 more
wiley   +1 more source

Unveiling the Doping- and Temperature-Dependent Properties of Organic Semiconductor Orthorhombic Rubrene from First Principles

Solids
Due to its large hole mobility, organic rubrene (C42H28) has attracted research questions regarding its applications in electronic devices. In this work, extensive first-principles calculations are performed to predict some temperature- and doping ...
Israel Oluwatobi Olowookere, Paul Olufunso Adebambo, Ridwan Olamide Agbaoye, Abdulrafiu Tunde Raji, Mopelola Abidemi Idowu, Stephane Kenmoe, Gboyega Augustine Adebayo   +6 more
doaj   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source

Stress‐to‐Light Conversion in an Earth‐Abundant Oxide Semiconductor

Advanced Science, EarlyView.
Stress‐to‐light conversion in solids represents a unique photonic functionality, yet it has never been realized in a chemically simple and sustainable material. Here, we show that sustainable semiconductor ZnO exhibits strong near‐infrared (NIR) luminescence under elastic stress when defect‐engineered to stabilize the p‐type state.
Tomoki Uchiyama, Koki Otonari, Reona Omori, Guangfa Yang, Eiji Nishibori, Ying Chen, Xu‐Guang Zheng, Chao‐Nan Xu   +7 more
wiley   +1 more source

Tailoring Multifunctional Carbon Dots via Precursor Stoichiometry: Switching Between Solid‐State Fluorescence and Broadband Absorption Through Aggregation Control

Advanced Science, EarlyView.
Precursor stoichiometry programs the surface chemistry of carbon dots, directing their self‐assembly into distinct aggregation modes. Aldehyde‐enriched surfaces form ordered, hydrogen‐bonded assemblies that enable bright red solid‐state fluorescence, whereas amine‐rich surfaces promote compact π–π stacked aggregates with broadband visible‐light ...
Gaixia Yang, Hao Sun, Defa Hou, Fulin Yang, Yuan Zou, Bei Zhou, Lanxiang Liu, Xu Lin, Guanben Du   +8 more
wiley   +1 more source