organic-chemistry-2018-posters-abstracts

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Organic Chemistry 2018 Journal of Organic & Inorganic Chemistry
ISSN: 2472-1123 Page 45
August 16-17, 2018
Dublin, Ireland
6th Edition of International
Conference and Exhibition on
Organic Chemistry
Photovoltaic cells are attracting significant interest for
harvesting indoor light for low power consumption wireless
electronics such as those required for smart homes and offices,
and the rapidly-growing Internet of Things. Here, we explore the
potential of solution processable, small molecule photovoltaic
cells as indoor power sources. By optimizing solvent vapour
annealing (SVA) time to the photovoltaic layer, a balance between
its crystallization and phase separation is obtained, resulting in a
record power conversion efficiency of over 28% under fluorescent
lamps of 1000 lux, generating a maximum power density of
78.2 µW/cm2 (>10% efficiency under AM1.5G). This high indoor
performance surpasses silicon based photovoltaic cells, and is
similar to gallium arsenide photovoltaic cells. Besides, the ratios
of the voltage at maximum power point to the open circuit voltage
are similar from indoor lighting to one sun condition, which is
unique and allows a less power consuming method to track
the maximum power point for a broad range of light intensities
(potentially attractive for wearable PV). New insight on the effect
of SVA to the indoor and one sun performance is provided by
advanced optoelectronic characterization techniques, which
shows that the mobility-lifetime products as a function of
charge carrier density can be correlated well to the performance
at different light levels. Our results suggest that organic
photovoltaic cell could be promising as indoor power source for
self-sustainable electronics.
Organic photovoltaic cell: a promising indoor light
harvester for self-sustainable electronics
Wing Chung Tsoi
Swansea University, UK
J Org Inorg Chem 2018, Volume 4
DOI: 10.21767/2472-1123-C4-012