Issue 10, 2025

A photodetector based on the non-centrosymmetric 2D pseudo-binary chalcogenide MnIn2Se4

Abstract

Due to their attractive band gap properties and van der Waals structure, 2D binary chalcogenide materials have been widely investigated in the last decade, finding applications in several fields such as catalysis, spintronics, and optoelectronics. Ternary 2D chalcogenide materials are a subject of growing interest in materials science due to their superior chemical tunability which endows tailored properties to the devices prepared thereof. In the family of AIIBIII2XVI4, ordered ZnIn2S4-like based photocatalytic systems have been studied meticulously. In contrast, reports on disordered phases appear to a minor extent. Herein, a photoelectrochemical (PEC) detector based on the pseudo-binary MnIn2Se4 system is presented. A combination of optical measurements and DFT calculations confirmed that the nature of the bandgap in MnIn2Se4 is indirect. Its performance outclasses that of parent compounds, reaching responsivity values of 8.41 mA W−1. The role of the non-centrosymmetric crystal structure is briefly discussed as a possible cause of improved charge separation of the photogenerated charge carriers.

Graphical abstract: A photodetector based on the non-centrosymmetric 2D pseudo-binary chalcogenide MnIn2Se4

Supplementary files

Article information

Article type
Paper
Submitted
12 Oct 2024
Accepted
12 Jan 2025
First published
15 Jan 2025
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2025,13, 5356-5369

A photodetector based on the non-centrosymmetric 2D pseudo-binary chalcogenide MnIn2Se4

M. Serra, N. Antonatos, L. Lajaunie, J. Albero, H. Garcia, M. Weng, L. Bastonero, K. J. Sarkar, R. Gusmão, J. Luxa, R. Bartoszewicz, J. Ziembicki, I. Plutnarová, N. Marzari, R. Kudrawiec and Z. Sofer, J. Mater. Chem. C, 2025, 13, 5356 DOI: 10.1039/D4TC04380D

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