C
Chunki Kim
Researcher at University of California, Santa Barbara
Publications - 29
Citations - 2430
Chunki Kim is an academic researcher from University of California, Santa Barbara. The author has contributed to research in topics: Polymer solar cell & Liquid crystal. The author has an hindex of 18, co-authored 29 publications receiving 2316 citations. Previous affiliations of Chunki Kim include LG Display & University of Rochester.
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Journal ArticleDOI
Small Molecule Solution-Processed Bulk Heterojunction Solar Cells†
TL;DR: The major classes of molecular donors have been reported in the literature in the past several years and highlights some of key considerations in molecular heterojunction design compared to polymer-based bulk heterojunctions as mentioned in this paper.
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Nongeminate Recombination and Charge Transport Limitations in Diketopyrrolopyrrole-Based Solution-Processed Small Molecule Solar Cells
TL;DR: In this paper, the authors investigated charge transport and nongeminate recombination in two solution-processed small molecule bulk heterojunction solar cells consisting of diketopyrrolopyrrole (DPP)-based donor molecules, mono-DPP and bis-DDPP, blended with [6,6]-phenyl-C71-butyric acid methyl ester (PCBM).
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A Systematic Approach to Solvent Selection Based on Cohesive Energy Densities in a Molecular Bulk Heterojunction System
Bright Walker,Arnold B. Tamayo,Duc T. Duong,Xuan-Dung Dang,Chunki Kim,Jimmy Granstrom,Thuc-Quyen Nguyen +6 more
TL;DR: In this paper, the dispersion, polar, and H-bonding parameters of DPP(TBFu) and [6,6]-phenyl-C₇₁-butyric acid methyl ester (PC) were found to be (19.3, 4.8, 6.5) MPa{sup 1/2}, with an error of ± 0.
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Effect of Charge Recombination on the Fill Factor of Small Molecule Bulk Heterojunction Solar Cells
TL;DR: In this paper, a solution-processed organic BHJ solar cells based on 3,6-bis[5-(benzofuran-2-yl)thiophen-2,yl]-2,5-bis(2-ethylhexyl)pyrrolo[3,4-c]pyrrole-1, 4-dione (DPP(TBFu)2) or poly(3-hexylthiophene) blended with [6,6]-phenyl-C60(70) -butyric acid
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Optimization of energy levels by molecular design: evaluation of bis-diketopyrrolopyrrole molecular donor materials for bulk heterojunction solar cells
Bright Walker,Bright Walker,Jianhua Liu,Chunki Kim,Gregory C. Welch,Jin Keun Park,Jason Lin,Peter Zalar,Christopher M. Proctor,Jung Hwa Seo,Guillermo C. Bazan,Thuc-Quyen Nguyen +11 more
TL;DR: In this paper, a series of solution-processable, small-molecule, donor materials based on an architecture consisting of two diketopyrrolopyrrole (DPP) cores with different aromatic π-bridges between the DPP units and different end-capping groups was reported.