Multiple exciton generation in colloidal nanocrystals

C Smith, D Binks - Nanomaterials, 2013 - mdpi.com
… process, multiple exciton generation (MEG), can occur in colloidal quantum dots. Here, some
… in close-packed arrays of Si QDs [16], as described in Section 3. In this case, the additional …

Efficient exciton funneling in cascaded PbS quantum dot superstructures

F Xu, X Ma, CR Haughn, J Benavides, MF Doty… - ACS …, 2011 - ACS Publications
… layers of quantum dots with different sizes. In this report, efficient exciton funneling and …
Sharp exponential band tails in highly disordered lead sulfide quantum dot arrays. Physical …

The use of size-selective excitation to study photocurrent through junctions containing single-size and multi-size arrays of colloidal CdSe quantum dots

EA Weiss, VJ Porter, RC Chiechi… - Journal of the …, 2008 - ACS Publications
… The field available to split an exciton in our arrays is the fraction of the total field (8.8 × 10 4
V/cm) that drops over this distance (10 nm for L QDs, 5.5 nm for M QDs, and 4.4 nm for S QDs…

Multiple-exciton generation in lead selenide nanorod solar cells with external quantum efficiencies exceeding 120%

NJLK Davis, ML Böhm, M Tabachnyk… - Nature …, 2015 - nature.com
array of … generation from MEG in PbSe dot films using the same 1,2-ethanedithiol ligand
that we use here (Supplementary Fig. 11). The difference may be due to the change from dots to …

False multiple exciton recombination and multiple exciton generation signals in semiconductor quantum dots arise from surface charge trapping

P Tyagi, P Kambhampati - The Journal of Chemical Physics, 2011 - pubs.aip.org
… with the proposition that lower excitonic symmetry in the phototreated dots (due to the …
selection rules in these dots. Therefore, the transitions from single excitonic states to the continuum …

Extended coherent exciton states in quantum dot arrays

AN Al-Ahmadi, SE Ulloa - Applied physics letters, 2006 - pubs.aip.org
… (Color online) Dynamics of the exciton lower state population at the acceptor dot of a
linear three dots array with varying V F d b ⁠. Inset (a) represents the reduction of the energy …

Semiconductor quantum dot-sensitized solar cells

J Tian, G Cao - Nano reviews, 2013 - Taylor & Francis
… water and oxygen, and 4) multiple exciton generation (MEG) with single-photon absorption
(… Constructing ZnO nanorod array photoelectrodes for highly efficient quantum dot sensitized …

Photoexcited electron and hole dynamics in semiconductor quantum dots: phonon-induced relaxation, dephasing, multiple exciton generation and recombination

K Hyeon-Deuk, OV Prezhdo - Journal of Physics: Condensed …, 2012 - iopscience.iop.org
… In particular, we consider dephasing of exciton pairs separated in energy by the bandgap
(E g ) and corresponding to the absorption and luminescence processes. We also investigate …

Single excitons in InGaN quantum dots on GaN pyramid arrays

CW Hsu, A Lundskog, KF Karlsson, U Forsberg… - Nano …, 2011 - ACS Publications
… originating from single and neutral excitons from InGaN QDs on top of … Our results reveal a
promising concept for generation of … emission from exciton complexes in GaN quantum dots. …

Multiple exciton generation in semiconductor nanocrystals: Toward efficient solar energy conversion

MC Beard, RJ Ellingson - Laser & Photonics Reviews, 2008 - Wiley Online Library
… Analysis of the data indicated that single photon generation of multiple excitons occurs on a
… multiple exciton production, the process has been referred to as multiple exciton generation (…