Scientists from Austrias Johannes Kepler University (JKU) Linz have developed ultra-thin, ultralight solar cells that can recharge a drone. When sufficient sunshine is offered, this solar module can produce 250 mW of power or 44 watts per gram.
For example, perovskite solar cells can be produced in ultrathin layers, making them exceptionally lightweight without sacrificing power output. In fact, the solar cells on the Solar Hopper are 20 times thinner than a human hair.
According to the researchers, these cells also provide many benefits over traditional silicon solar cells in the context of powering self-governing drones..
Compared to silicon cells, they likewise provide a high power-to-weight ratio, making them ideal for applications where weight is vital, such as aerial lorries. Plus, they can carry out well even in low-light conditions and therefore, appropriate for drones operating in variable lighting environments like cloudy or partially shaded areas.
Solar Hopper, the hybrid solar-powered quadcopter. Image credits: JKU
While standard solar cells are made from silicon, the ultrathin and ultralight cells powering the solar hopper are composed of perovskite. This is a calcium titanium oxide mineral that is utilized in LEDs, Li-ion battery applications, lasers, and photodetectors..
During the flight tests, the solar hopper had the ability to operate and complete several charge-flight-charge cycles just by utilizing sunlight to charge its batteries.
In the last few years, perovskite-based solar batteries have actually likewise gotten a great deal of attention due to their capacity for high-efficiency and affordable production. A 2016 study suggests that while silicon cells cost 75 cents to produce one-watt power in perfect sunshine conditions, perovskite cells can attain the very same output for just 10 to 20 cents.
” The solar hopper showcases how an energy-autonomous aerial car can carry out numerous tasks, such as massive mapping, monitoring, rescue and search, reconnaissance, etc. Upon finishing its mission, the hopper recharges and begins once again, highlighting its ability to run continually without external power sources,” Christoph Putz, one of the researchers and a PhD student at JKU Linz, told ZME Science.
Perovskite solar cells for drones.
Additionally, they can be made on versatile substrates, making them flexible and lightweight to intricate surfaces.<