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. 2020 May 18;10(32):18560-18564.
doi: 10.1039/d0ra02980g. eCollection 2020 May 14.

CuZn2InTe4 quantum dots-a novel nanostructure employing a green synthesis route

Libin Kuriakose  1 , N J Simi  1 , V V Ison  1
Affiliations

CuZn2InTe4 quantum dots-a novel nanostructure employing a green synthesis route

Libin Kuriakose et al. RSC Adv. .

Abstract

We report the synthesis and characterisation of novel CuZn2InTe4 quantum dots (QDs) suitable for various optoelectronic applications. The nanostructures grown are technologically important due to their Cd and Pb-free composition. The synthesis was maintained "green" by using a phosphine free organometallic procedure utilizing octadecene as the coordinating solvent. The structural properties of the nanocrystals (NCs) were analyzed using high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and X-ray diffraction (XRD). The composition was verified using X-ray photoelectron spectroscopy (XPS), inductive coupled plasma-optical emission spectroscopy (ICP-OES) and energy dispersive X-ray spectroscopy (EDX). The optical studies were performed using UV-VIS-NIR spectroscopy and photoluminescence (PL) spectroscopy and the band gap value obtained was verified using cyclic voltammetry (CV). The nanostructures grown were spherical with a size of about 5 nm possessing appreciable monodispersity.

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Conflict of interest statement

There are no conflicts to declare.

Figures

Fig. 1
Fig. 1. HRTEM image of Cu doped Zn–In–Te. Inset shows the SAED pattern of the same.
Fig. 2
Fig. 2. XPS Spectra of Cu doped Zn–In–Te. (a) Cu 2p (b) Zn 2p (c) In 3d and (d) Te 3d.
Fig. 3
Fig. 3. EDX spectrum of CuZn2InTe4.
Fig. 4
Fig. 4. XRD pattern of CuZn2InTe4.
Fig. 5
Fig. 5. Cyclic voltammograms of CuZn2InTe4.
See this image and copyright information in PMC

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