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Thursday,
24 April 2025 |
Video-Recording for any system with MP4-support - Video.mp4 (ca. 354 Mb) |
15:15 – 16:15 |
"Sustainable development of next-generation solar cells and
LEDs"
Speaker: Prof. Feng Gao
(Linköping University)
Solar cells and light-emitting diodes
(LEDs) are considered as essential components
for our sustainable future. We take
emerging perovskite semiconductors as an
example and demonstrate how we take
sustainability into consideration when developing next-generation
perovskite-based solar cells and LEDs.
For perovskite solar cells, we develop a
low-cost, green solvent-based holistic
recycling strategy to restore all valuable
components from perovskite photovoltaic waste. After repeated
degradation-recycling processes, the recycled devices show similar efficiency
and stability compared to the fresh devices. Our work highlights unique
opportunities of perovskite photovoltaics for holistic recycling and paves
the way for sustainable perovskite solar
economy. For perovskite LEDs, a unique feature of perovskites is that they can
also efficiently detect light, making it possible
to develop new applications which are
hardly possible for other LED technologies.
By making use of this advantage, we
develop multifunctional displays which can be simultaneously used as touch
screen, fingerprint sensor, ambient light sensor, and image sensor without
integrating any additional sensors. We show the potential of perovskite LEDs as
next-generation LED technology from environmental, economic, and technical
perspectives, providing insights relevant to its future development.
About the Speaker:
Feng Gao is a full professor and head of
the Optoelectronics Unit at Linköping University in Sweden since 2020. He has
been appointed as a Wallenberg Scholar
since 2024. His group focuses on emerging
semiconductors for next-generation optoelectronic devices. He obtained his
Ph.D. degree (2011) from the University of Cambridge, M.S. (2007) and B.S.
(2004) degrees from Nanjing University.
He received from the European Research
Council (ERC) an ERC Consolidator
Grant (2021) and an ERC Starting Grant
(2016). He became a Swedish Foundation
for Strategic Research (SSF) Future
Research Leader in 2019 and a Wallenberg Academy Fellow in 2017. He received
the Tage Erlander Prize in Physics (2020)
and the Göran Gustafsson Prize in Physics
(2025),
both awarded by the Royal Swedish Academy
of Sciences.