Macrocrystals of colloidal quantum dots in anthracene: Exciton transfer and polarized emission
Demir, H. V.
Journal of Physical Chemistry Letters
American Chemical Society
Please cite this item using this persistent URLhttp://hdl.handle.net/11693/21981
In this work, centimeter-scale macrocrystals of nonpolar colloidal quantum dots (QDs) incorporated into anthracene were grown for the first time. The exciton transfer from the anthracene host to acceptor QDs was systematically investigated, and anisotropic emission from the isotropic QDs in the anthracene macrocrystals was discovered. Results showed a decreasing photoluminescence lifetime of the donor anthracene, indicating a strengthening energy transfer with increasing QD concentration in the macrocrystals. With the anisotropy study, QDs inside the anthracene host acquired a polarization ratio of ∼1.5 at 0° collection angle, and this increases to ∼2.5 at the collection angle of 60°. A proof-of-concept application of these excitonic macrocrystals as tunable color converters on light-emitting diodes was also demonstrated. © 2015 American Chemical Society.
- Research Paper 
Showing items related by title, author, creator and subject.
Observation of selective plasmon-exciton coupling in nonradiative energy transfer: Donor-selective versus acceptor-selective plexcitons Ozel, T.; Hernandez-Martinez P.L.; Mutlugun, E.; Akin O.; Nizamoglu, S.; Ozel I.O.; Zhang Q.; Xiong Q.; Demir, H. V. (2013)We report selectively plasmon-mediated nonradiative energy transfer between quantum dot (QD) emitters interacting with each other via Förster-type resonance energy transfer (FRET) under controlled plasmon coupling either ...
Guzelturk B.; Martinez P.L.H.; Zhang Q.; Xiong Q.; Sun H.; Sun X.W.; Govorov A.O.; Demir H.V. (2014)In the past two decades, semiconductor quantum dots and wires have developed into new, promising classes of materials for next-generation lighting and display systems due to their superior optical properties. In particular, ...
Peptide-mediated constructs of quantum dot nanocomposites for enzymatic control of nonradiative energy transfer Seker, U.O.S.; Ozel, T.; Demir, H. V. (2011)A bottom-up approach for constructing colloidal semiconductor quantum dot (QDot) nanocomposites that facilitate nonradiative Förster-type resonance energy transfer (FRET) using polyelectrolyte peptides was proposed and ...