Impact of FRET between Molecular Aggregates and Quantum Dots.
作者： Partha Maity , Thumuganti Gayathri , Surya Prakash Singh , Hirendra N. Ghosh
关键词: Förster resonance energy transfer 、 Quantum dot 、 Chemistry 、 Electric potential energy 、 BODIPY 、 Monomer 、 Photochemistry 、 Pl quenching 、 Photoluminescence 、 Boron
摘要: Energy transfer has been employed in third-generation solar cells for the conversion of light into electrical energy. Long-range nonradiative energy from semiconductor quantum dots (QDs) to fluorophores demonstrated by using CdS QDs and thiophene-BODIPY (boron dipyrromethene, abbreviated as TG2). TG2 shows a broad photoluminescence (PL) spectrum, which varies with concentration. At very low concentrations, monomeric units are present; then, upon increasing concentration, these monomers form mixed (J-/H-)aggregated state. between was confirmed separately investigating interactions monomer aggregated states TG2. Size-dependent PL quenching that Forster resonance (FRET) photoexcited J-aggregate state major energy-relaxation channel, occurred on timescale hundreds fs. These results have applications field harvesting based assembly molecular aggregates.
sci-hub.se 参考文章(72)
Abdelaziz Boulesbaa, Zhuangqun Huang, David Wu, Tianquan Lian, Competition between Energy and Electron Transfer from CdSe QDs to Adsorbed Rhodamine B Journal of Physical Chemistry C. ,vol. 114, pp. 962- 969 ,(2010) , 10.1021/JP909972B
Partha Maity, Tushar Debnath, Uday Chopra, Hirendra Nath Ghosh, Cascading electron and hole transfer dynamics in a CdS/CdTe core–shell sensitized with bromo-pyrogallol red (Br-PGR): slow charge recombination in type II regime Nanoscale. ,vol. 7, pp. 2698- 2707 ,(2015) , 10.1039/C4NR05829A
Clemens Burda, Xiaobo Chen, Radha Narayanan, Mostafa A. El-Sayed, Chemistry and properties of nanocrystals of different shapes. Chemical Reviews. ,vol. 105, pp. 1025- 1102 ,(2005) , 10.1021/CR030063A
Brian J. Walker, Vladimir Bulović, Moungi G. Bawendi, Quantum Dot/J-Aggregate Blended Films for Light Harvesting and Energy Transfer Nano Letters. ,vol. 10, pp. 3995- 3999 ,(2010) , 10.1021/NL1018639
Daniel Collado, Juan Casado, Sandra Rodríguez González, Juan T López Navarrete, Rafael Suau, Ezequiel Perez‐Inestrosa, Ted M Pappenfus, M Manuela M Raposo, None, Enhanced functionality for donor-acceptor oligothiophenes by means of inclusion of BODIPY: synthesis, electrochemistry, photophysics, and model chemistry. Chemistry: A European Journal. ,vol. 17, pp. 498- 507 ,(2011) , 10.1002/CHEM.201001942
Thomas Franzl, Thomas A. Klar, Stefan Schietinger, Andrey L. Rogach, Jochen Feldmann, Exciton Recycling in Graded Gap Nanocrystal Structures Nano Letters. ,vol. 4, pp. 1599- 1603 ,(2004) , 10.1021/NL049322H
Sule Erten-Ela, M. Deniz Yilmaz, Burcak Icli, Yavuz Dede, Siddik Icli, Engin U. Akkaya, A Panchromatic Boradiazaindacene (BODIPY) Sensitizer for Dye-Sensitized Solar Cells Organic Letters. ,vol. 10, pp. 3299- 3302 ,(2008) , 10.1021/OL8010612
Michael Graetzel, René A. J. Janssen, David B. Mitzi, Edward H. Sargent, Materials interface engineering for solution-processed photovoltaics Nature. ,vol. 488, pp. 304- 312 ,(2012) , 10.1038/NATURE11476
L. E. Brus, A simple model for the ionization potential, electron affinity, and aqueous redox potentials of small semiconductor crystallites The Journal of Chemical Physics. ,vol. 79, pp. 5566- 5571 ,(1983) , 10.1063/1.445676
Sophia Buhbut, Stella Itzhakov, Elad Tauber, Menny Shalom, Idan Hod, Thomas Geiger, Yuval Garini, Dan Oron, Arie Zaban, Built-in Quantum Dot Antennas in Dye-Sensitized Solar Cells ACS Nano. ,vol. 4, pp. 1293- 1298 ,(2010) , 10.1021/NN100021B