Institution
Gwangju Institute of Science and Technology
Facility•Gwangju, South Korea•
About: Gwangju Institute of Science and Technology is a facility organization based out in Gwangju, South Korea. It is known for research contribution in the topics: Laser & Optical fiber. The organization has 7325 authors who have published 15350 publications receiving 353060 citations. The organization is also known as: Kwangju Institute of Science and Technology & GIST.
Topics: Laser, Optical fiber, Thin film, Membrane, Graphene
Papers published on a yearly basis
Papers
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TL;DR: In this paper, a polymer solar cell based on a bulk hetereojunction design with an internal quantum efficiency of over 90% across the visible spectrum (425 nm to 575 nm) is reported.
Abstract: A polymer solar-cell based on a bulk hetereojunction design with an internal quantum efficiency of over 90% across the visible spectrum (425 nm to 575 nm) is reported. The device exhibits a power-conversion efficiency of 6% under standard air-mass 1.5 global illumination tests.
4,002 citations
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TL;DR: Tandem solar cells, in which two solar cells with different absorption characteristics are linked to use a wider range of the solar spectrum, were fabricated with each layer processed from solution with the use of bulk heterojunction materials comprising semiconducting polymers and fullerene derivatives.
Abstract: Tandem solar cells, in which two solar cells with different absorption characteristics are linked to use a wider range of the solar spectrum, were fabricated with each layer processed from solution with the use of bulk heterojunction materials comprising semiconducting polymers and fullerene derivatives. A transparent titanium oxide (TiO x ) layer separates and connects the front cell and the back cell. The TiO x layer serves as an electron transport and collecting layer for the first cell and as a stable foundation that enables the fabrication of the second cell to complete the tandem cell architecture. We use an inverted structure with the low band-gap polymer-fullerene composite as the charge-separating layer in the front cell and the high band-gap polymer composite as that in the back cell. Power-conversion efficiencies of more than 6% were achieved at illuminations of 200 milliwatts per square centimeter.
3,215 citations
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TL;DR: Efficient organic-inorganic perovskite light-emitting diodes were made with nanograin crystals that lack metallic lead, which helped to confine excitons and avoid their quenching.
Abstract: Organic-inorganic hybrid perovskites are emerging low-cost emitters with very high color purity, but their low luminescent efficiency is a critical drawback. We boosted the current efficiency (CE) of perovskite light-emitting diodes with a simple bilayer structure to 42.9 candela per ampere, similar to the CE of phosphorescent organic light-emitting diodes, with two modifications: We prevented the formation of metallic lead (Pb) atoms that cause strong exciton quenching through a small increase in methylammonium bromide (MABr) molar proportion, and we spatially confined the exciton in uniform MAPbBr3 nanograins (average diameter = 99.7 nanometers) formed by a nanocrystal pinning process and concomitant reduction of exciton diffusion length to 67 nanometers. These changes caused substantial increases in steady-state photoluminescence intensity and efficiency of MAPbBr3 nanograin layers.
2,295 citations
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TL;DR: A survey of formation control of multi-agent systems focuses on the sensing capability and the interaction topology of agents, and categorizes the existing results into position-, displacement-, and distance-based control.
1,751 citations
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TL;DR: The potential utility of nanoparticle-aptamer bioconjugates for a therapeutic application is demonstrated and remarkable efficacy and reduced toxicity as measured by mean body weight loss (BWL) in vivo are demonstrated.
Abstract: Targeted uptake of therapeutic nanoparticles in a cell-, tissue-, or disease-specific manner represents a potentially powerful technology. Using prostate cancer as a model, we report docetaxel (Dtxl)-encapsulated nanoparticles formulated with biocompatible and biodegradable poly(D,L-lactic-co-glycolic acid)-block-poly(ethylene glycol) (PLGA-b-PEG) copolymer and surface functionalized with the A10 2'-fluoropyrimidine RNA aptamers that recognize the extracellular domain of the prostate-specific membrane antigen (PSMA), a well characterized antigen expressed on the surface of prostate cancer cells. These Dtxl-encapsulated nanoparticle-aptamer bioconjugates (Dtxl-NP-Apt) bind to the PSMA protein expressed on the surface of LNCaP prostate epithelial cells and get taken up by these cells resulting in significantly enhanced in vitro cellular toxicity as compared with nontargeted nanoparticles that lack the PSMA aptamer (Dtxl-NP) (P < 0.0004). The Dtxl-NP-Apt bioconjugates also exhibit remarkable efficacy and reduced toxicity as measured by mean body weight loss (BWL) in vivo [body weight loss of 7.7 +/- 4% vs. 18 +/- 5% for Dtxl-NP-Apt vs. Dtxl-NP at nadir, respectively (mean +/- SD); n = 7]. After a single intratumoral injection of Dtxl-NP-Apt bioconjugates, complete tumor reduction was observed in five of seven LNCaP xenograft nude mice (initial tumor volume of approximately 300 mm3), and 100% of these animals survived our 109-day study. In contrast, two of seven mice in the Dtxl-NP group had complete tumor reduction with 109-day survivability of only 57%. Dtxl alone had a survivability of only 14%. Saline and nanoparticles without drug were similarly nonefficacious. This report demonstrates the potential utility of nanoparticle-aptamer bioconjugates for a therapeutic application.
1,688 citations
Authors
Showing all 7402 results
Name | H-index | Papers | Citations |
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Robert Langer | 281 | 2324 | 326306 |
Alan J. Heeger | 171 | 913 | 147492 |
William A. Goddard | 151 | 1653 | 123322 |
Rajesh Kumar | 149 | 4439 | 140830 |
Bruce E. Logan | 140 | 591 | 77351 |
Michael Schmitt | 134 | 2007 | 114667 |
Muhammad Ahmad | 128 | 1187 | 79758 |
Philip W. Kantoff | 122 | 688 | 70155 |
Young Hee Lee | 122 | 1168 | 61107 |
Min Suk Kim | 119 | 975 | 66214 |
Peter J. Park | 110 | 357 | 106149 |
Omid C. Farokhzad | 110 | 329 | 64226 |
Edwin L. Thomas | 104 | 606 | 40819 |
James R. Heath | 103 | 425 | 58548 |
Peter Strasser | 100 | 357 | 37374 |