Amlan Majumdar, Yanning Sun, et al.
IEEE T-ED
Conference paper
Demonstration of electroluminescence from strained Ge membrane LED
Abstract
We demonstrate electroluminescence (EL) from light-emitting diodes (LEDs) on highly strained germanium (Ge) membranes. Electrical measurements show an on-off ratio increase of one order of magnitude in membrane LEDs compared to bulk. The EL spectrum from the 0.76% strained Ge LED shows a 100nm redshift of the center wavelength. We also discuss the implications for highly efficient Ge lasers. © 2012 IEEE.
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