Melbourne University, Australia
CAPE Prestige Seminar Series
"Nanocrystal Based Solar Cells: one solution to photovoltaics"
Semiconductor nanocrystals or quantum dots were proposed as tunable lumophores for a wide range of applications in the late 1990s: including biolabelling, single photon emitters, tunable LEDs and solar cells. However challenges in synthesizing these materials has led to only slow success in the development of devices.
In this talk we demonstrate that p-n junctions can be fabricated from nanocrystal inks using solution processing. Annealing converts the inks into continuous semiconductor films with well-defined optical and electrical properties.
We demonstrate that photovoltaic devices with overall incident photon conversion efficiencies (IPCE) of 10% can be achieved with wet chemical processed materials. We also show that alloying and compositional grading are easily achieved which enables new approaches to light harvesting to be devised.
This event will be followed by a catered reception at 5pm
Professor Paul Mulvaney
Paul Mulvaney is an ARC Laureate Fellow (2011-2015) and Professor of Chemistry in the School of Chemistry and Bio21 Institute at the University of Melbourne. He received his PhD degree at the University of Melbourne in 1989, working on surface electron transfer kinetics with Professor Franz Grieser. He worked for 4 years at the Hahn-Meitner Nuclear Research Institute in Berlin before returning as a QEII Fellow in 1993.
His interests include the quantum size effects in semiconductor nanocrystals, surface forces, nanomechanics, surface plasmon spectroscopy and solar energy conversion. His group is developing plasmonic and FRET based detection platforms for defence applications.
To date he has published some 220 scientific papers. He is co-inventor on 5 commercialised patents. Professor Mulvaney currently serves on the editorial boards of six journals and on the advisory board of the Australian Nanotechnology Network. He was made a Fellow of the Australian Academy of Sciences in 2009.