C
Cyril Opeil
Researcher at Boston College
Publications - 86
Citations - 3731
Cyril Opeil is an academic researcher from Boston College. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 25, co-authored 86 publications receiving 3158 citations. Previous affiliations of Cyril Opeil include Los Alamos National Laboratory.
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High thermoelectric performance by resonant dopant indium in nanostructured SnTe
Qian Zhang,Bolin Liao,Yucheng Lan,Kevin Lukas,Weishu Liu,Keivan Esfarjani,Cyril Opeil,David Broido,Gang Chen,Zhifeng Ren +9 more
TL;DR: This work studied the thermoelectric properties of nanostructured SnTe with different dopants, and found indium-doped SnTe showed extraordinarily large Seebeck coefficients that cannot be explained properly by the conventional two-valence band model.
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Enhancement of Thermoelectric Properties by Modulation-Doping in Silicon Germanium Alloy Nanocomposites
Bo Yu,Mona Zebarjadi,Hui Wang,Kevin Lukas,Hengzhi Wang,Dezhi Wang,Cyril Opeil,Mildred S. Dresselhaus,Gang Chen,Zhifeng Ren +9 more
TL;DR: An alternative materials design is reported, using alloy Si(70) Ge(30) instead of Si as the nanoparticles and Si(95)Ge(5) as the matrix, to increase the power factor but not the thermal conductivity, leading to a ZT of 1.3 ± 0.1 at 900 °C.
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Heavy doping and band engineering by potassium to improve the thermoelectric figure of merit in p-type PbTe, PbSe, and PbTe(1-y)Se(y).
Qian Zhang,Feng Cao,Weishu Liu,Kevin Lukas,Bo Yu,Shuo Chen,Cyril Opeil,David Broido,Gang Chen,Zhifeng Ren +9 more
TL;DR: It was found that Se increases the doping concentration of K in PbTe as a result of the balance of electronegativity and also lowers the lattice thermal conductivity because of the increased number of point defects.
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Studies on the Bi2Te3–Bi2Se3–Bi2S3 system for mid-temperature thermoelectric energy conversion
Weishu Liu,Kevin Lukas,Kenneth McEnaney,Sangyeop Lee,Qian Zhang,Cyril Opeil,Gang Chen,Zhifeng Ren +7 more
TL;DR: In this paper, the leg efficiency of thermoelectric conversion for segmented elements based on these n-type materials could potentially reach 12.5% with a cold side at 25 °C and a hot side at 500 °C if appropriate p-type legs are paired.