Issue 36, 2020

Optically tunable mesoscale CdSe morphologies via inorganic phototropic growth

Abstract

Inorganic phototropic growth using only spatially conformal illumination generated Se–Cd films that exhibited precise light-defined mesoscale morphologies including highly ordered, anisotropic, and periodic ridge and trench nanotextures over entire macroscopic substrates. Growth was accomplished via a light-induced electrochemical method using an optically and chemically isotropic solution, an unpatterned substrate, and unstructured, incoherent, low-intensity illumination in the absence of chemical directing agents or physical templates and masks. The morphologies were defined by the illumination inputs: the nanotexture long axes aligned parallel to the optical E-field vector, and the feature sizes and periods scaled with the wavelength. Optically based modeling of the growth closely reproduced the experimental results, confirming the film morphologies were fully determined by the light–matter interactions during growth. Solution processing of the Se–Cd films resulted in stoichiometric, crystalline CdSe films that also exhibited ordered nanotextures, demonstrating that inorganic phototropic growth can effect tunable, template-free generation of ordered CdSe nanostructures over macroscopic length scales.

Graphical abstract: Optically tunable mesoscale CdSe morphologies via inorganic phototropic growth

Supplementary files

Article information

Article type
Communication
Submitted
01 Maijs 2020
Accepted
22 Jūn. 2020
First published
22 Jūn. 2020

J. Mater. Chem. C, 2020,8, 12412-12417

Author version available

Optically tunable mesoscale CdSe morphologies via inorganic phototropic growth

K. R. Hamann, A. I. Carim, M. C. Meier, J. R. Thompson, N. A. Batara, I. S. Yermolenko, H. A. Atwater and N. S. Lewis, J. Mater. Chem. C, 2020, 8, 12412 DOI: 10.1039/D0TC02126A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements