Abstract
A printed energy harvesting and storage circuit powered
by ambient office lighting and its use to power a printed
display is reported. The autonomous device is composed of
three printed electronic components: an organic
photovoltaic module, a carbon-nanotubes-only
supercapacitor and an electrochromic display element.
Components are fabricated from safe and environmentally
friendly materials, and have been fabricated using
solution processing methods, which translate into
low-cost and high-throughput manufacturing. A
supercapacitor made of spray-coated carbon nanotube based
ink and aqueous NaCl electrolyte was charged using a
printed organic photovoltaic module exposed to office
lighting conditions. The supercapacitor charging rate,
self-discharge rate and display operation were studied in
detail. The supercapacitor self-discharge rate was found
to depend on the charging rate. The fully charged
supercapacitor was used as a power source to run the
electrochromic display over 50 times.
Original language | English |
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Article number | 22967 |
Journal | Scientific Reports |
Volume | 6 |
DOIs | |
Publication status | Published - 2016 |
MoE publication type | A1 Journal article-refereed |