@inproceedings{db8a51736b8a435c8b75c63551838f48,
title = "Enhanced performance designs of group-IV light emitting diodes for Mid IR photonic applications",
abstract = "This paper describes Ge1-ySny (y = 0.0-0.11) light emitting diodes (LEDs) with a broad range of compositions extending from pure Ge to Sn concentrations where the alloy becomes a direct gap material (y = 0.09) and beyond. The devices are grown on Si(100) platforms using ultra-low temperature depositions of highly reactive Ge and Sn hydrides. The device fabrication adopts two new photodiode designs. The first employs n-Ge/i-Ge1-ySny/p-Ge1- y'Sny' hetero-structure stacks possessing a single defected interface between the n-Ge and i-Ge1-ySny layers. The second consists of a homo-structure n-Ge1-ySny/i-Ge1-ySny/p-Ge1-ySny design. The devices show low dark currents and the electroluminescence (EL) spectra show concomitant redshifts of the peak emission position and intensity increase near direct gap Sn compositions. The EL of the homo-structure design displays a large efficiency enhancement relative to the hetero-structure devices. The fabrication of ternary Ge1-x-ySixSny diodes with ~9% Sn and 3-9% Si contents is also discussed.",
author = "Gallagher, {J. D.} and Senaratne, {C. L.} and C. Xu and Wallace, {P. M.} and Jose Menendez and John Kouvetakis",
note = "Publisher Copyright: {\textcopyright} 2015 The Electrochemical Society.; Symposium on State-of-the-Art Program on Compound Semiconductors 58, SOTAPOCS 2015 - 228th ECS Meeting ; Conference date: 11-10-2015 Through 15-10-2015",
year = "2015",
doi = "10.1149/06914.0147ecst",
language = "English (US)",
series = "ECS Transactions",
publisher = "Electrochemical Society Inc.",
number = "14",
pages = "147--156",
editor = "He, {J. H.} and C. O'Dwyer and F. Ren and E. Douglas and C. Jagadish and S. Jang and Wang, {Y. L.} and Lynch, {R. P.} and Anderson, {T. J.} and Hite, {J. K.}",
booktitle = "State-of-the-Art Program on Compound Semiconductors 58, SOTAPOCS 58",
edition = "14",
}