Compositionally tunable ternary Bi2(Se1−xTex)3 and (Bi1−ySby)2Te3 thin films via low pressure chemical vapour deposition

Sophie L. Benjamin; C. H. (Kees) de Groot; Chitra Gurnani; Samantha L. Hawken; Andrew L. Hector; Ruomeng Huang; Marek Jura; William Levason; Eleanor Reid; Gillian Reid; Stephen P. Richards; Gavin B. G. Stenning

doi:10.1039/C8TC01285G

Compositionally tunable ternary Bi₂(Se_1−xTe_x)₃ and (Bi_1−ySb_y)₂Te₃ thin films via low pressure chemical vapour deposition†

Sophie L. Benjamin,^ab C. H. (Kees) de Groot,^c Chitra Gurnani,^ad Samantha L. Hawken,^a Andrew L. Hector,

^a Ruomeng Huang,

*^c Marek Jura,^e William Levason,

^a Eleanor Reid,^a Gillian Reid,

*^a Stephen P. Richards^a and Gavin B. G. Stenning^e

Author affiliations

* Corresponding authors

^a Chemistry, University of Southampton, Southampton SO17 1BJ, UK
E-mail: G.Reid@soton.ac.uk

^b School of Science and Technology, Nottingham Trent University, Nottingham NG11 8NS, UK

^c Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, UK
E-mail: R.Huang@soton.ac.uk

^d School of Natural Sciences, Mahindra Ecole Centrale, Hyderabad, India

^e ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, UK

Abstract

The inherently rapid ligand substitution kinetics associated with the novel and chemically compatible precursors, [MCl₃(EⁿBu₂)₃] (M = Sb, Bi; E = Se, Te), enable CVD growth of ternary Bi₂(Se_1−xTe_x)₃ and (Bi_1−ySb_y)₂Te₃ thin films with very good compositional, structural and morphological control, for the first time. X-ray diffraction data follow Vegard's law and Raman bands shift linearly with the atom substitutions, indicating very well-distributed solid solutions.

This article is part of the themed collection: Celebrating Excellence in Research: Women of Materials Science

Journal of Materials Chemistry C

Compositionally tunable ternary Bi₂(Se_1−xTe_x)₃ and (Bi_1−ySb_y)₂Te₃ thin films via low pressure chemical vapour deposition†

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Compositionally tunable ternary Bi₂(Se_1−xTe_x)₃ and (Bi_1−ySb_y)₂Te₃ thin films via low pressure chemical vapour deposition

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Journal of Materials Chemistry C