Journal ArticleDOI
Mass production of a 3D non-woven nanofabric with crystalline P3HT nanofibrils for organic solar cells
Jin Young Oh,Tae Il Lee,Woo Soon Jang,Soo Sang Chae,Jee Ho Park,Hyun Woo Lee,Jae Min Myoung,Hong Koo Baik +7 more
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TLDR
In this article, a strategy for the in line mass production of a 3D non-woven nanofabric consisting of crystalline P3HT nanofibrils, created by in situ cooling of the transportation line to feed a P3H solution for a coating tool, was introduced.Abstract:
A strategy for the in line mass production of a three-dimensional (3D) non-woven nanofabric consisting of crystalline P3HT nanofibrils, created by in situ cooling of the transportation line to feed a P3HT solution for a coating tool, was introduced. The required cooling-temperature with respect to the feeding rate for the overall nanofibril creating process and the yield of the nanofibrils in solution with various organic solvents were determined. Considering the influence of a change in the temperature on the status of the precipitated nanofibrils until feeding it into the spray nozzle, the margin of the surviving nanofibrils at a certain temperature was also investigated. To verify the superiority of our strategy and present directions regarding its application to industry, arrays of organic solar cells based on a 3D non-woven nanofabric structure consisting of P3HT nanofibrils were designed and fabricated using our in situ process combined with a spray-coating system. As a result, through the in situ cooling process, a considerable solar energy harvesting efficiency near 4%, which is a state-of-the-art value in a bi-layer-based solar cell, was obtained.read more
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Journal Article
Photonic Crystal Geometry for Organic Solar Cells
TL;DR: Organic solar cells with a photonic crystal nanostructure embossed in the photoactive bulk heterojunction layer are reported, a topography that exhibits a 3-fold enhancement of the absorption in specific regions of the solar spectrum in part through multiple excitation resonances.
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TL;DR: This study suggests a simple way to simultaneously address all of these issues through the addition of a small amount of a nonionic surfactant (Triton X-100) to commercial PEDOT:PSS solutions.
Journal ArticleDOI
Comparing matched polymer:Fullerene solar cells made by solution-sequential processing and traditional blend casting: Nanoscale structure and device performance
Steven A. Hawks,Jordan C. Aguirre,Laura T. Schelhas,Robert James Thompson,Rachel C. Huber,Amy S. Ferreira,Guangye Zhang,Andrew A. Herzing,Sarah H. Tolbert,Benjamin J. Schwartz +9 more
TL;DR: In this paper, the composition and thickness-matching of SqP active layers has been compared with traditional blend casting (BC) and sequential processing (SqP), where the pure polymer and fullerene materials are cast sequentially from different solutions.
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Enhanced Air Stability of Polymer Solar Cells with a Nanofibril-Based Photoactive Layer
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Journal ArticleDOI
Photoactive Poly(3-hexylthiophene) Nanoweb for Optoelectrical Stimulation to Enhance Neurogenesis of Human Stem Cells.
Kisuk Yang,Jin Young Oh,Jong Seung Lee,Yoonhee Jin,Gyeong Eon Chang,Soo Sang Chae,Eunji Cheong,Hong Koo Baik,Seung Woo Cho +8 more
TL;DR: The photoactive nanoweb substrates developed in this study may serve as platforms for producing stem cell therapeutics with enhanced neurogenesis and neuromodulation via optoelectrical control of stem cells.
References
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Journal ArticleDOI
Chromism of soluble polythienylenes
TL;DR: In this article, the thermochromism and solvatochromisms of solutions of poly(3-alkylthienylenes) are reported and the experimental results indicate the presence of two coexisting phases: polymer in solution and polymer in microcrystalline aggregates.
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Dynamical Monte Carlo modelling of organic solar cells: the dependence of internal quantum efficiency on morphology.
TL;DR: The IQE is found to be strongly sensitive to the scale of phase separation in the morphology, with a peak at approximately 20 nm for the PFB/F8BT system studied.
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Effects of Annealing on the Nanomorphology and Performance of Poly(alkylthiophene):Fullerene Bulk-Heterojunction Solar Cells†
TL;DR: In this article, the evolution of nanomorphology within thin solid-state films of poly(3-alkylthiophene):[6,6]-phenyl-C61 butyric acid methyl ester (P3AT:PCBM) blends during the film formation and subsequent thermal annealing is reported.
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Morphology characterization in organic and hybrid solar cells
TL;DR: The morphology of the active layer is of paramount importance in the photon to electron conversion process in organic and hybrid solar cells, with all length scales, from molecular ordering to intradevice composition variability, playing key roles as discussed by the authors.
Journal ArticleDOI
Introducing organic nanowire transistors
TL;DR: In this article, the authors discuss the self-assembly of one-dimensional, single-crystalline organic nanowires, show the structures of commonly employed organic semiconductors, and review some of the advances in this field.