Nanocrystal Aerogels with Coupled or Decoupled Building Blocks

authored by

Pascal Rusch, Björn Schremmer, Christian Strelow, Alf Mews, Dirk Dorfs, Nadja C. Bigall

Abstract

The influence of interparticle contact in nanoparticle-based aerogel network structures is investigated by selectively connecting or isolating the building blocks inside of the network, thereby coupling and decoupling them in regards to their optical and electronic properties. This is achieved by tuning the synthesis sequence and exchanging the point of shell growth and the point of particle assembly, leading to two distinctly different structures as examined by electron microscopy. By thorough examination of the resulting optical properties of the generated structures, the clear correlation between nanoscopic/microscopic structure and macroscopic optical properties is demonstrated. Temperature-dependent measurements and effective mass approximation calculations support our findings.

Organisation(s)

Institute of Physical Chemistry and Electrochemistry
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

Universität Hamburg

Type

Article

Journal

Journal of Physical Chemistry Letters

Volume

10

Pages

7804-7810

No. of pages

7

ISSN

1948-7185

Publication date

19.12.2019

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Materials Science(all), Physical and Theoretical Chemistry

Electronic version(s)

https://doi.org/10.1021/acs.jpclett.9b02695 (Access: Open)
https://doi.org/10.15488/9170 (Access: Open)