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12 November 2018: MRS/E-MRS Materials science lecture by Prof. dr. Robert Hamers    Nov 12, 2018

12 November 2018: MRS/E-MRS Materials science lecture by Prof. dr. Robert Hamers
Nov 12, 2018

CONTACT

Mevrouw Aslihan BABAYIGIT

32-11-268825

aslihan.babayigit@uhasselt.be


Synopsis

Diamond’s negative electron affinity allows us to be an unusually good  emitter of electrons when excited with above-bandgap light. While  these electron emissive properties have long been used in vacuum  applications, we have recently established that diamond can also be  used as a solid-state emitter of electrons into water and other liquids,  forming solvated electrons and other high-energy chemical species. The  efficiency of electron emission is limited by diamond’s weak  absorbance. In an effort to enhance electron emission, we have  incorporated silver nanoparticles into the diamond films by using  thermally induced de-wetting from continuous films, followed by  encapsulation by a second diamond layer. Here, I will discuss  diamond’s photo-excited electron emission into water and the  properties of diamond-encapsulated nanoparticle films.