Campus Units

Chemical and Biological Engineering

Document Type

Article

Research Focus Area

Advanced and Nanostructured Materials

Publication Version

Published Version

Publication Date

8-1-2019

Journal or Book Title

Applied Physics Letters

Volume

115

Issue

5

First Page

052106

DOI

10.1063/1.5111011

Abstract

Germanane is a two-dimensional, strongly confined form of germanium. It presents an interesting combination of (i) ease of integration with CMOS technology, (ii) low toxicity, and (iii) electronic confinement which transforms the indirect bandgap of the bulk material into a direct bandgap featuring photoluminescence. However, the optoelectronic properties of this material remain far less investigated than its structural properties. Here, we investigate the photoluminescence and transport properties of arrays of methyl-terminated germanane flakes. The photoluminescence appears to have two contributions, one from the band edge and the other from trap states. The dynamics of the exciton appear to be in the range of 1–100 ns. Conduction in this material appears to be p-type, while the photoconduction time response can be made as short as 100 μs.

Comments

This article is published as Livache, Clément, Bradley J. Ryan, Utkarsh Ramesh, Violette Steinmetz, Charlie Gréboval, Audrey Chu, Thibault Brule, Sandrine Ithurria, Geoffrey Prévot, Thierry Barisien, Abdelkarim Ouerghi, Matthew G. Panthani, and Emmanuel Lhuillier. "Optoelectronic properties of methyl-terminated germanane." Applied Physics Letters 115, no. 5 (2019): 052106. DOI: 10.1063/1.5111011. Posted with permission.

Copyright Owner

The Author(s)

Language

en

File Format

application/pdf

Available for download on Saturday, August 01, 2020

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