W
Woochul Kim
Researcher at Yonsei University
Publications - 113
Citations - 4625
Woochul Kim is an academic researcher from Yonsei University. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 29, co-authored 112 publications receiving 3762 citations. Previous affiliations of Woochul Kim include University of California, Berkeley & KAIST.
Papers
More filters
Journal ArticleDOI
Thermal conductivity reduction and thermoelectric figure of merit increase by embedding nanoparticles in crystalline semiconductors.
Woochul Kim,Joshua M. O. Zide,Arthur C. Gossard,Dmitri O. Klenov,Susanne Stemmer,Ali Shakouri,Arun Majumdar,Arun Majumdar +7 more
TL;DR: Using In0.53Ga0.47As containing ErAs nanoparticles, thermal conductivity reduction is demonstrated by almost a factor of 2 below the alloy limit and a corresponding increase in the thermoelectric figure of merit is demonstrated.
Journal ArticleDOI
Band Degeneracy, Low Thermal Conductivity, and High Thermoelectric Figure of Merit in SnTe-CaTe Alloys
Rabih Al Rahal Al Orabi,Rabih Al Rahal Al Orabi,Nicolas A. Mecholsky,Junphil Hwang,Woochul Kim,Jong-Soo Rhyee,Daehyun Wee,Marco Fornari +7 more
TL;DR: In this paper, the authors provide experimental evidence and theoretical understanding that alloying SnTe with Ca greatly improves the transport properties leading to ZT of 1.35 at 873 K, the highest ZT value reported for singly doped SnTe materials.
Journal ArticleDOI
Strategies for engineering phonon transport in thermoelectrics
TL;DR: In this article, a review of the representative strategies of phonon engineering by categorizing them into the methods affecting phonon thermal conductivity, i.e., specific heat, phonon group velocity, and mean free path, is presented.
Journal ArticleDOI
Comparison of the 3ω method and time-domain thermoreflectance for measurements of the cross-plane thermal conductivity of epitaxial semiconductors
Yee Kan Koh,Suzanne L. Singer,Woochul Kim,Joshua M. O. Zide,Hong Lu,David G. Cahill,Arun Majumdar,Arthur C. Gossard +7 more
TL;DR: In this article, the authors compare the cross-plane thermal conductivity measured by the 3ω method and time-domain thermoreflectance (TDTR) on epitaxial (In0.52Al0.48)x(In053Ga0.47)1−xAs alloy layers with embedded ErAs nanoparticles.
Journal ArticleDOI
Fabrication and characterization of a nanowire/polymer-based nanocomposite for a prototype thermoelectric device
Alexis R. Abramson,Woochul Kim,Scott T. Huxtable,Haoquan Yan,Yiying Wu,A. Majumdar,C.L. Tien,Peidong Yang +7 more
TL;DR: In this paper, the design, fabrication and testing of a novel thermoelectric device comprised of arrays of silicon nanowires embedded in a polymer matrix was discussed, where parylene, a low thermal conductivity and extremely conformal polymer, was embedded within the arrays.