Starts 20 Nov 2013 16:30
Ends 20 Nov 2013 20:00
Central European Time
ICTP
Leonardo da Vinci Building Luigi Stasi Seminar Room
Strada Costiera, 11 I - 34151 Trieste (Italy)
In this presentation, our recent studies on future generation thin film solar cells and hydrogen energy materials will be highlighted. The presence of di-vacancies in hydrogenated amorphous silicon (a-Si:H) was observed by a set of complementary techniques. These defects play an important role in the instability of a-Si:H layers against light-soaking (Staebler-Wronski effect). Further, colloidal PbSe nanoparticles were investigated by positron annihilation spectroscopies and ab-initio calculations, shedding light on their surface composition and electronic structure. Finally, recent studies on the impact of nanoscale particle size, surface energies and the presence of vacancies on hydrogen storage materials and hydrogen sensors are discussed.
  • M. Poropat