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.
Copyright Owner
The Author(s)
Copyright Date
2019
Language
en
File Format
application/pdf
Recommended Citation
Livache, Clément; Ryan, Bradley J.; Ramesh, Utkarsh; Steinmetz, Violette; Gréboval, Charlie; Chu, Audrey; Brule, Thibault; Ithurria, Sandrine; Prévot, Geoffrey; Barisien, Thierry; Ouerghi, Abdelkarim; Panthani, Matthew G.; and Lhuillier, Emmanuel, "Optoelectronic properties of methyl-terminated germanane" (2019). Chemical and Biological Engineering Publications. 384.
https://lib.dr.iastate.edu/cbe_pubs/384
Included in
Atomic, Molecular and Optical Physics Commons, Chemical Engineering Commons, Engineering Physics Commons
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.