13 / 15
Page 30
Notes:
allied
academies
Materials Science and Nanotechnology | Volume 2
May 21-22, 2018 | New York, USA
International Conference on
Nanoscience & Technology
S
emiconductor nanocrystals exhibit exciting and interesting
properties as they transition from bulk to the nanoscale.
The emergence of new properties is as a result of quantum
confinement effects. Semiconductor nanocrystals are
attractive materials for use in photovoltaic devices mainly
due to their tunable absorption spectrum, large surface area
(because of their small size), their adaptability, their ability
to generate multiple excitons as well as their capability of
hot carrier injection from excited state i.e. by minimizing
energy losses during the thermalization of excited state.
Semiconductor nanocrystal solar cells are projected to
achieve higher efficiencies than silicon based solar cells while
reducing the cost of each kilowatt of electricity produced,
the raw materials and the processes used to convert the raw
materials into functional cells. Semiconductor nanocrystals
based gas sensors show much promise as they can detect
analytes at low concentration due to the large surface area,
can be highly selective as the result of the carrier type and
have been shown to operate at room temperature thus
reducing the costs. Herein, we report on the synthesis and
characterization of various types of metal chalcogenide
semiconductor nanocrystals and showcase their versatility
through application in both solar cells and gas sensors.
Speaker Biography
Makwena Justice Moloto has completed his PhD at the age of 30 years from the
University of Zululand and spends time at the University of Manchester to complete
his PhD hosted by school of chemistry. He is the researcher at one of the technically
orientated university in the department of chemistry. He has published more than
40 papers in reputed journals and has been serving as a reviewer for a number of
materials chemistry journals of repute.
e:
nosipho.moloto@wits.ac.zaSemiconductor nanocrystals as functional materials for nanoelectronics
Moloto N
University of the Witwatersrand, South Africa