Aerogels: Aerogels from CdSe/CdS Nanorods with Ultra-long Exciton Lifetimes and High Fluorescence Quantum Yields (Adv. Mater. 40/2015)

Sara Sánchez-Paradinas; Dirk Dorfs; Sebastian Friebe; Axel Freytag; Andreas Wolf; Nadja C Bigall

doi:10.1002/adma.201570270

Aerogels: Aerogels from CdSe/CdS Nanorods with Ultra-long Exciton Lifetimes and High Fluorescence Quantum Yields (Adv. Mater. 40/2015)

Adv Mater. 2015 Oct 28;27(40):6151. doi: 10.1002/adma.201570270.

Authors

Sara Sánchez-Paradinas¹, Dirk Dorfs¹, Sebastian Friebe¹, Axel Freytag¹, Andreas Wolf¹, Nadja C Bigall¹

Affiliation

¹ Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover, Callinstr. 3A, D-30167, Hannover, Germany.

PMID: 26487019
DOI: 10.1002/adma.201570270

Abstract

The fabrication of gels from semiconductor nanoparticles by means of a controlled and optimized destabilization process is investigated by N. C. Bigall and co-workers on page 6152. Aerogels with high photoluminescence quantum yield and ultra-long radiative lifetimes are fabricated from CdSe/CdS seeded nanorods. It is shown that excited electrons can be delocalized within the aerogel monolith while, at the same time, holes stay confined in the CdSe cores. This type of assembly of nanoparticles shows novel properties in comparison to those of the nanoparticle building blocks and of the bulk material.

Keywords: (absolute) quantum yields; CdSe/CdS seeded nanorods; aerogels; radiative decays; semiconductor nanoparticles.