Germanium‐based monoelemental and binary two‐dimensional materials: Theoretical and experimental investigations and promising applications

• Published in: InfoMat Vol. 4; no. 11
• Main Authors: Zhao, Fulai, Feng, Yiyu, Feng, Wei
• Format: Journal Article
• Language: English
• Published: Melbourne John Wiley & Sons, Inc 01.11.2022; Wiley
• Subjects: 2D materials; binary compounds; Biomedical materials; Electric fields; electronic properties; Energy storage; Field effect transistors; Geometry; germanene; Germanium; Graphene; group IVA elements; Hybridization; Nanomaterials; Photovoltaic cells; Prediction models; Semiconductor devices; Solar cells; Thermoelectric materials; Two dimensional materials
• ISSN: 2567-3165; 2567-3165
• DOI: 10.1002/inf2.12365

Two‐dimensional (2D) materials based on group IVA elements have attracted extensive attention owing to their rich chemical structures and novel properties. This comprehensive review focuses on the phases of Ge monoelemental and binary 2D materials including germanene and its derivatives, Ge‐IVA binary compounds, Ge‐VA binary compounds, and Ge‐VIA binary compounds. The latest progress in predictive modeling, fabrication, and fundamental and physical property modulation of their stable 2D configurations are presented. Accordingly, various interesting applications of these Ge‐based 2D materials are discussed, particularly field effect transistors, photodetectors, optical devices, catalysts, energy storage devices, solar cells, thermoelectric devices, sensors, biomedical materials, and spintronic devices. Finally, this review concludes with a few perspectives and an outlook for quickly expanding the application scope Ge‐based 2D materials based on recent developments. This review summarizes the theoretical and experimental progress of Ge‐based monoelemental and binary two‐dimensional (2D) materials, with an emphasis on their crystal structures and electronic, mechanical, thermal, optical, and photoelectric properties. The application prospects of these materials in field effect transistors, photodetectors, optical devices, catalysts, energy storage devices, solar cells, thermoelectric devices, sensors, biomedical materials, and spintronic devices are discussed in detail.