Thermoelectric Bi2Te3−xSex alloys for efficient thermal to electrical energy conversion
Literature Information
Omer Meroz, Yaniv Gelbstein
Eco-friendly renewable energy conversion methods are constantly investigated. Thermoelectric devices, directly converting thermal into electrical energy, show high potential for utilizing waste heat into useful electricity. Yet enhancing their efficiency is a challenging task. Below 300 °C, Bi2TexSe3−x thermoelectric alloys are considered to be the most efficient for such applications. In the current research, by controlling the specific compositions and the synthesis route, optimizing the electron doping level and minimizing the lattice thermal conductivity values, very high thermoelectric figure of merit values were obtained beyond ∼170 °C. It is shown that upon combining the currently reported Bi2Te2.4Se0.6 and Bi2Te1.5Se1.5 alloys with previously reported highly efficient p- and n-type Bi2Te3 based compositions, a remarkable thermoelectric efficiency of ∼9.6% can be achieved for a relatively low temperature difference of 250 °C.
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Source Journal
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.














