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dc.contributor.authorPlanelles Fuster, Josep
dc.contributor.authorRajadell Viciano, Fernando
dc.contributor.authorClimente Plasencia, Joan Ignasi
dc.identifier.citationPLANELLES, Josep; RAJADELL, Fernando; CLIMENTE, Juan I. Electronic Origin of Linearly Polarized Emission in CdSe/CdS Dot-in-Rod Heterostructures. The Journal of Physical Chemistry C, 2016, vol. 120, no 48, p. 27724-27730.ca_CA
dc.description.abstractSeeded CdSe/CdS nanorods exhibit intense polarized emission along the rod main axis. The degree of linear polarization cannot be explained by dielectric effects alone; an additional electronic contribution is present whose nature has not been settled up to date. Using multiband k·p theory, we analyze the potential influence of several factors affecting excitonic emission and show that shear strain is the main electronic mechanism promoting linear polarization. It favors energetically light hole excitons over heavy hole ones, via deformation potential, and makes their radiative recombination faster via piezoelectricity. The implication of this mechanism is that linear emission can be enhanced by growing long but thin CdS shells around large, prolate CdSe cores, which indeed supports and rationalizes recent experimental findings. Together with the well-known dielectric effects, these results pave the way for controlled degree of linear polarization in dot-in-rods through dedicated structural design.ca_CA
dc.description.sponsorShipSupport from MINECO project CTQ2014-60178-P, UJI project P1-1B2014-24 is acknowledged.ca_CA
dc.format.extent6 p.ca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.relation.isPartOfThe Journal of Physical Chemistry C, 2016, vol. 120, no 48ca_CA
dc.rightsCopyright © 2016 American Chemical Societyca_CA
dc.subjectCdSe/CdS nanorodsca_CA
dc.subjectlinear polarizationca_CA
dc.titleElectronic Origin of Linearly Polarized Emission in CdSe/CdS Dot-in-Rod Heterostructuresca_CA

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