J
Jeehwan Kim
Researcher at Massachusetts Institute of Technology
Publications - 214
Citations - 5860
Jeehwan Kim is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Layer (electronics) & Epitaxy. The author has an hindex of 33, co-authored 197 publications receiving 4103 citations. Previous affiliations of Jeehwan Kim include Sungkyunkwan University & IBM.
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Journal ArticleDOI
SiGe epitaxial memory for neuromorphic computing with reproducible high performance based on engineered dislocations
Shinhyun Choi,Scott H. Tan,Zefan Li,Yunjo Kim,Chanyeol Choi,Pai-Yu Chen,Han-Wool Yeon,Shimeng Yu,Jeehwan Kim +8 more
TL;DR: This work demonstrates analog resistive switching devices that possess desired characteristics for neuromorphic computing networks with minimal performance variations using a single-crystalline SiGe layer epitaxially grown on Si as a switching medium.
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High Efficiency Cu2ZnSn(S,Se)4 Solar Cells by Applying a Double In2S3/CdS Emitter
Jeehwan Kim,Homare Hiroi,Teodor K. Todorov,Oki Gunawan,Masaru Kuwahara,Tayfun Gokmen,Dhruv Nair,Marinus Hopstaken,Byungha Shin,Yun Seog Lee,Wei Wang,Hiroki Sugimoto,David B. Mitzi +12 more
TL;DR: High-efficiency Cu2ZnSn(S,Se)4 solar cells are reported by applying In2S3/CdS double emitters, resulting in a substantial enhancement in open-circuit voltage.
Journal ArticleDOI
Remote epitaxy through graphene enables two-dimensional material-based layer transfer
Yunjo Kim,Samuel S. Cruz,Kyusang Lee,Babatunde Alawode,Chanyeol Choi,Yi Song,Jared M. Johnson,Christopher Heidelberger,Wei Kong,Shinhyun Choi,Kuan Qiao,Ibraheem Almansouri,Ibraheem Almansouri,Eugene A. Fitzgerald,Jing Kong,Alexie M. Kolpak,Jinwoo Hwang,Jeehwan Kim +17 more
TL;DR: It is shown that the weak van der Waals potential of graphene cannot completely screen the stronger potential field of many substrates, which enables epitaxial growth to occur despite its presence, and is also applicable to InP and GaP.
Journal ArticleDOI
Principle of direct van der Waals epitaxy of single-crystalline films on epitaxial graphene
Jeehwan Kim,Can Bayram,Hongsik Park,Cheng-Wei Cheng,Christos D. Dimitrakopoulos,John A. Ott,Kathleen B. Reuter,Stephen W. Bedell,Devendra K. Sadana +8 more
TL;DR: This work demonstrates direct van der Waals epitaxy of high-quality single-crystalline GaN films on epitaxial graphene with low defectivity and surface roughness comparable with that grown on conventional SiC or sapphire substrates.
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Building energy performance evaluation of building integrated photovoltaic (BIPV) window with semi-transparent solar cells
TL;DR: In this paper, the effects of electrical and optical parameters of building integrated photovoltaic windows with a semi-transparent solar cell on the overall energy performance of a typical mid-sized commercial building in various climate conditions were evaluated.