R
Raluca I. Gearba
Researcher at University of Texas at Austin
Publications - 25
Citations - 1670
Raluca I. Gearba is an academic researcher from University of Texas at Austin. The author has contributed to research in topics: Liquid crystal & Columnar phase. The author has an hindex of 17, co-authored 25 publications receiving 1568 citations. Previous affiliations of Raluca I. Gearba include Catholic University of Leuven & A. N. Nesmeyanov Institute of Organoelement Compounds.
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Journal ArticleDOI
Hot charge-transfer excitons set the time limit for charge separation at donor/acceptor interfaces in organic photovoltaics
Askat E. Jailaubekov,Adam P. Willard,John R. Tritsch,Wai-Lun Chan,Na Sai,Raluca I. Gearba,Loren G. Kaake,Loren G. Kaake,Kenrick J. Williams,Kevin Leung,Peter J. Rossky,Xiaoyang Zhu,Xiaoyang Zhu +12 more
TL;DR: This real-time view of hot CT exciton formation and relaxation using femtosecond nonlinear optical spectroscopies and non-adiabatic mixed quantum mechanics/molecular mechanics simulations in the phthalocyanine-fullerene model OPV system sets the fundamental time limit for competitive charge separation channels that lead to efficient photocurrent generation.
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High charge-carrier mobility in pi-deficient discotic mesogens: design and structure-property relationship.
Matthias Lehmann,Matthias Lehmann,Gaël Kestemont,Rafael Gómez Aspe,Claudine Buess-Herman,Michel H. J. Koch,Michael G. Debije,Jorge Piris,Matthijs P. de Haas,John M. Warman,Mark D. Watson,Mark D. Watson,Vincent Lemaur,Jérôme Cornil,Yves Geerts,Raluca I. Gearba,Dimitri A. Ivanov +16 more
TL;DR: Hexaazatrinaphthylene derivatives with six alkylsulfanyl chains of different length (hexyl, octyl, decyl and dodecyl) have been designed to obtain new potential electron-carrier materials and the electron-deficient nature of these compounds has been demonstrated by cyclic voltammetry.
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Tailoring Discotic Mesophases: Columnar Order Enforced with Hydrogen Bonds
Raluca I. Gearba,Matthias Lehmann,Jérémy Levin,Dimitri A. Ivanov,Michel H. J. Koch,Joaquín Barberá,Michael G. Debije,Jorge Piris,Yves Geerts +8 more
TL;DR: In this paper, the smallest inter-disk distance was found in columnar liquid crystals (3.18 −3.20 A) for hexagonal columnar mesophase of a HAT-CONHR derivative.
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Anomalously Large Polarization Effect Responsible for Excitonic Red Shifts in PbSe Quantum Dot Solids
Abraham Wolcott,Vincent Doyeux,Cory A. Nelson,Raluca I. Gearba,Kin Wai Lei,Kevin G. Yager,Andrei Dolocan,Kenrick J. Williams,Daniel Nguyen,Xiaoyang Zhu +9 more
TL;DR: In this paper, the authors used optical absorption spectroscopy of two-dimensional and three-dimensional arrays of PbSe QDs with controlled inter-QD distance, which was determined by the length of alkanedithiol linking molecules.
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Self-organization of polybases neutralized with mesogenic wedge-shaped sulfonic acid molecules: an approach toward supramolecular cylinders.
TL;DR: In the bulk the interaction between pyridine and sulfonic acid moieties was proved by FT-IR spectroscopy, and changes of the absorption characteristics implied a conformational change of the polymer backbone.