S
Sang Kyu Kwak
Researcher at Ulsan National Institute of Science and Technology
Publications - 305
Citations - 10996
Sang Kyu Kwak is an academic researcher from Ulsan National Institute of Science and Technology. The author has contributed to research in topics: Chemistry & Catalysis. The author has an hindex of 42, co-authored 262 publications receiving 6541 citations. Previous affiliations of Sang Kyu Kwak include Korea Institute of Science and Technology & Nanyang Technological University.
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Journal ArticleDOI
Methylammonium Chloride Induces Intermediate Phase Stabilization for Efficient Perovskite Solar Cells
Minjin Kim,Minjin Kim,Gi-Hwan Kim,Tae Kyung Lee,In Woo Choi,Hye Won Choi,Yimhyun Jo,Yung Jin Yoon,Jae Won Kim,Jiyun Lee,Daihong Huh,Heon Lee,Sang Kyu Kwak,Jin Young Kim,Dong Suk Kim +14 more
TL;DR: In this article, the function of methylammonium chloride (MACl) additive in formamidinium lead iodide (FAPbI3)-based perovskite was studied.
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Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss.
Mingyu Jeong,In Woo Choi,Eun Min Go,Yongjoon Cho,Minjin Kim,Byongkyu Lee,Seonghun Jeong,Yimhyun Jo,Hye Won Choi,Jiyun Lee,Jin-Hyuk Bae,Sang Kyu Kwak,Dong Suk Kim,Changduk Yang +13 more
TL;DR: Two fluorinated isomeric analogs of the well-known hole-transporting material Spiro-OMeTAD are developed and used as HTMs in PSCs and feature high efficiency, open-circuit voltage, and stability of perovskite solar cells.
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Cloaking nanoparticles with protein corona shield for targeted drug delivery
Jun Yong Oh,Hansol Kim,L. Palanikumar,Eun Min Go,Batakrishna Jana,Soo Ah Park,Ho Young Kim,Kibeom Kim,Jeong Kon Seo,Sang Kyu Kwak,Chaekyu Kim,Sebyung Kang,Ja-Hyoung Ryu +12 more
TL;DR: A supramolecularly constructed protein corona on nanoparticles is developed, which minimises interactions with serum proteins to prevent the clearance of nanoparticles by macrophages and provides insight into the use of the supramolescularly builtprotein corona shield as a targeting agent through regulating the interfaces between nanoparticles and biological systems.
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Direct exfoliation and dispersion of two-dimensional materials in pure water via temperature control
Jin-Seon Kim,Sanghyuk Kwon,Dae-Hyun Cho,Byunggil Kang,Hyukjoon Kwon,Youngchan Kim,Sung O Park,Gwan Yeong Jung,Eunhye Shin,Wan-Gu Kim,Hyungdong Lee,Gyeong Hee Ryu,Minseok Choi,Taehyeong Kim,Junghoon Oh,Sungjin Park,Sang Kyu Kwak,Suk Wang Yoon,Doyoung Byun,Zonghoon Lee,Changgu Lee +20 more
TL;DR: This work exfoliates 2D materials directly in pure water without using any chemicals or surfactants, and discovers that good solubility in water is maintained due to the presence of platelet surface charges as a result of edge functionalization or intrinsic polarity.
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Solvent-Free, Single Lithium-Ion Conducting Covalent Organic Frameworks
Kihun Jeong,Sodam Park,Gwan Yeong Jung,Su Hwan Kim,Yong Hyeok Lee,Sang Kyu Kwak,Sang Young Lee +6 more
TL;DR: A lithium sulfonated covalent organic framework (denoted as TpPa-SO3Li) is demonstrated as a new class of solvent-free, single lithium-ion conductors, allowing reversible and stable lithium plating/stripping on lithiumMetal electrodes, demonstrating its potential use for lithium metal electrodes.