UW Today

Xiaodong Xu


February 12, 2016

UW scientists create ultrathin semiconductor heterostructures for new technological applications

An illustration of the strong valley exciton interactions and transport in a 2-D semiconductor heterostructure.

University of Washington scientists have successfully combined two different ultrathin semiconductors — each just one layer of atoms thick and roughly 100,000 times thinner than a human hair — to make a new two-dimensional heterostructure with potential uses in clean energy and optically-active electronics.


March 23, 2015

UW scientists build a nanolaser using a single atomic sheet

The ultra-thin semiconductor, which is about 100,000 times thinner than a human hair, stretches across the top of the photonic cavity.

University of Washington scientists have built a new nanometer-sized laser using a semiconductor that’s only three atoms thick. It could help open the door to next-generation computing that uses light, rather than electrons, to transfer information.


August 26, 2014

Scientists craft a semiconductor junction only three atoms thick

As seen under an optical microscope, the heterostructures have a triangular shape. The two different monolayer semiconductors can be recognized through their different colors.

Scientists have developed what they believe is the thinnest-possible semiconductor, a new class of nanoscale materials made in sheets only three atoms thick.


March 10, 2014

Scientists build thinnest-possible LEDs to be stronger, more energy efficient

This graphical representation shows the layers of the 2-D LED and how it emits light.

University of Washington scientists have built the thinnest-known LED that can be used as a source of light energy in electronics. The LED is based off of two-dimensional, flexible semiconductors, making it possible to stack or use in much smaller and more diverse applications than current technology allows.