Issue 10, 2016

Coexistence of optically active radial and axial CdTe insertions in single ZnTe nanowire

Abstract

We report on the growth, cathodoluminescence and micro-photoluminescence of individual radial and axial CdTe insertions in ZnTe nanowires. In particular, the cathodoluminescence technique is used to determine the position of each emitting object inside the nanowire. It is demonstrated that depending on the CdTe deposition temperature, one can obtain an emission either from axial CdTe insertions only, or from both, radial and axial heterostructures, simultaneously. At 350 °C CdTe grows only axially, whereas at 310 °C and 290 °C, there is also significant deposition on the nanowire sidewalls resulting in radial core/shell heterostructures. The presence of Cd atoms on the sidewalls is confirmed by energy dispersive X-ray spectroscopy. Micro-photoluminescence study reveals a strong linear polarization of the emission from both types of heterostructures in the direction along the nanowire axis.

Graphical abstract: Coexistence of optically active radial and axial CdTe insertions in single ZnTe nanowire

Supplementary files

Article information

Article type
Paper
Submitted
11 Dec 2015
Accepted
03 Feb 2016
First published
05 Feb 2016

Nanoscale, 2016,8, 5720-5727

Coexistence of optically active radial and axial CdTe insertions in single ZnTe nanowire

P. Wojnar, J. Płachta, W. Zaleszczyk, S. Kret, A. M. Sanchez, R. Rudniewski, K. Raczkowska, M. Szymura, G. Karczewski, L. T. Baczewski, A. Pietruczik, T. Wojtowicz and J. Kossut, Nanoscale, 2016, 8, 5720 DOI: 10.1039/C5NR08806B

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