Diamond Publications - Search Results

Search Again...

These results only include publications that have been reviewed and processed by Diamond Light Source. To also view papers that have not yet been processed click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

One item found (0 items not approved).

Instruments / Technical Area	Publication Details	Published	Actions
E02-JEM ARM 300CF	Subnanometer-wide indium selenide nanoribbons William J. Cull , Stephen T. Skowron , Ruth Hayter , Craig T. Stoppiello , Graham A. Rance , Johannes Biskupek , Zakhar R. Kudrynskyi , Zakhar D. Kovalyuk , Christopher S. Allen , Thomas J. Slater , Ute Kaiser , Amalia Patanè , Andrei N. Khlobystov Acs Nano DOI: 10.1021/acsnano.3c00670 Diamond Proposal Number(s): [25251] Open Access Show Abstract ▼ Abstract: Indium selenides (InxSey) have been shown to retain several desirable properties, such as ferroelectricity, tunable photoluminescence through temperature-controlled phase changes, and high electron mobility when confined to two dimensions (2D). In this work we synthesize single-layer, ultrathin, subnanometer-wide InxSey by templated growth inside single-walled carbon nanotubes (SWCNTs). Despite the complex polymorphism of InxSey we show that the phase of the encapsulated material can be identified through comparison of experimental aberration-corrected transmission electron microscopy (AC-TEM) images and AC-TEM simulations of known structures of InxSey. We show that, by altering synthesis conditions, one of two different stoichiometries of sub-nm InxSey, namely InSe or β-In2Se3, can be prepared. Additionally, in situ AC-TEM heating experiments reveal that encapsulated β-In2Se3 undergoes a phase change to γ-In2Se3 above 400 °C. Further analysis of the encapsulated species is performed using X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), energy dispersive X-ray analysis (EDX), and Raman spectroscopy, corroborating the identities of the encapsulated species. These materials could provide a platform for ultrathin, subnanometer-wide phase-change nanoribbons with applications as nanoelectronic components.	Mar 2023

Instruments / Technical Area

Publication Details

Published

Actions

E02-JEM ARM 300CF

Subnanometer-wide indium selenide nanoribbons