Energy Transfer from Colloidal Nanocrystals to Strongly Absorbing Perovskites

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Energy Transfer from Colloidal Nanocrystals to Strongly Absorbing Perovskites

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Title: Energy Transfer from Colloidal Nanocrystals to Strongly Absorbing Perovskites
Author(s):
Cabrera, Yasiel;
Rupich, Sara M.;
Shaw, Ryan;
Anand, Benoy;
Villa, Manuel de Anda;
Rahman, Rezwanur;
Dangerfield, Aaron;
Gartstein, Yuri N.;
Malko, Anton V.;
Chabal, Yves J.
Date Created: 2017-05-18
Item Type: article
Keywords: Show Keywords
Description: Includes supplementary material
Abstract: Integration of colloidal nanocrystal quantum dots (NQDs) with strongly absorbing semiconductors offers the possibility of developing optoelectronic and photonic devices with new functionalities. We examine the process of energy transfer (ET) from photoactive CdSe/ZnS core/shell NQDs into lead-halide perovskite polycrystalline films as a function of distance from the perovskite surface using time-resolved photoluminescence (TRPL) spectroscopy. We demonstrate near-field electromagnetic coupling between vastly dissimilar excitation in two materials that can reach an efficiency of 99% at room temperature. Our experimental results, combined with electrodynamics modeling, reveal the leading role of non-radiative ET at close distances, augmented by the waveguide emission coupling and light reabsorption at separations >10 nm. These results open the way to combining materials with different dimensionalities to achieve novel nanoscale architectures with improved photovoltaic and light emitting functionalities.
Publisher: Royal Society of Chemistry
ISSN: 2040-3364
Source: Nanoscale
Link to Related Resource: http://dx.doi.org/10.1039/c7nr02234d
Persistent Link: http://hdl.handle.net/10735.1/5803
Bibliographic Citation: Cabrera, Yasiel, Sara M. Rupich, Ryan Shaw, Benoy Anand, et al. 2017. "Energy transfer from colloidal nanocrystals to strongly absorbing perovskites." Nanoscale 9(25), doi:10.1039/C7NR02234D
Terms of Use: ©2017 The Royal Society of Chemistry. This article may not be further made available or distributed.

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