H
Hwan Kyu Kim
Researcher at Korea University
Publications - 121
Citations - 5674
Hwan Kyu Kim is an academic researcher from Korea University. The author has contributed to research in topics: Dye-sensitized solar cell & Porphyrin. The author has an hindex of 38, co-authored 115 publications receiving 4658 citations.
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Journal ArticleDOI
N-Doped Graphene Nanoplatelets as Superior Metal-Free Counter Electrodes for Organic Dye-Sensitized Solar Cells
Myung Jong Ju,Jae Cheon Kim,Hyun-Jung Choi,In Taek Choi,Sang-Gyun Kim,Kimin Lim,Jaejung Ko,Jae-Joon Lee,In-Yup Jeon,Jong-Beom Baek,Hwan Kyu Kim +10 more
TL;DR: The extraordinarily better current-voltage characteristics of the D SSC-NGnP outperforming the DSSC-Pt for the Co(bpy)3(3+/2+) redox couple (in paticular, FF and short circuit current, Jsc) is highlighted for the first time.
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Rational design criteria for D–π–A structured organic and porphyrin sensitizers for highly efficient dye-sensitized solar cells
TL;DR: In this paper, the effects of molecular structural engineering on the photophysical and electrochemical properties, photovoltaic parameters, and efficiency of dye-sensitized solar cells (DSSCs) are presented.
Journal ArticleDOI
14.2% Efficiency Dye-Sensitized Solar Cells by Co-sensitizing Novel Thieno[3,2-b]indole-Based Organic Dyes with a Promising Porphyrin Sensitizer
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Direct nitrogen fixation at the edges of graphene nanoplatelets as efficient electrocatalysts for energy conversion
In-Yup Jeon,Hyun-Jung Choi,Myung Jong Ju,In Taek Choi,Kimin Lim,Jaejung Ko,Hwan Kyu Kim,Jae Cheon Kim,Jae-Joon Lee,Dongbin Shin,Sun-Min Jung,Jeong-Min Seo,Min-Jung Kim,Noejung Park,Liming Dai,Liming Dai,Jong-Beom Baek +16 more
TL;DR: By dry ball-milling graphite with N2, this work has discovered a simple, but versatile, scalable and eco-friendly, approach to direct fixation of N2 at the edges of graphene nanoplatelets (GnPs) with superb catalytic performance in both dye-sensitized solar cells and fuel cells to replace conventional Pt-based catalysts for energy conversion.
Journal ArticleDOI
Significant light absorption enhancement by a single heterocyclic unit change in the π-bridge moiety from thieno[3,2-b]benzothiophene to thieno[3,2-b]indole for high performance dye-sensitized and tandem solar cells
TL;DR: In this article, the alkylated thieno[3,2-b]indole (TI) moiety was used as the π-bridge unit to enhance the capability of the TBT used in organic sensitizers.