W-center LED¶

Description¶

W-centers are emissive centers in silicon produced by ion bombardment. By putting them in a PN junction in a waveguide, the W-centers can be excited electrically. This is the principle underlying the waveguide-coupled all-silicon light-emitting diode (LED) developed in [BCM+17].

../../_images/led_blender.png

Characteristics¶

The light-current (LI) and current-voltage (IV) curves of a previous LED are pictured here. Optical intensity is measured in clicks per second from an on-chip single photon detector.

../../_images/led_IV.pdf

../../_images/led_LI.pdf

The W-centers emit around 1220nm. The spectrum of the emitted light under different biasing conditions is shown here

../../_images/led_spectrum.pdf

Layout¶

Todo

Need to work out the standard values, make a python file, then make a GDS…