Scientists from the National Research Technological University “MISIS” together with colleagues from Italy have created a new source of energy for the Internet of Things.
According to the authors, photocells will be able to provide energy to devices of the Internet of Things, fitness trackers, smartwatches, headphones.
The authors note that now the market for wireless devices and sensors for the Internet of Things requires autonomous energy sources with low power consumption and a capacity of about one microwatt.
For example, these requirements are met by compact photovoltaic batteries based on perovskites, capable of providing a reserve of energy even when charged from the light of ordinary indoor lamps.
Perovskite is a mineral from the perovskite group of the oxide class. The efficiency of perovskite solar cells is about 25%, which is comparable to semiconductors, but at the same time they are much easier to manufacture.
In new work, the authors described the design of a planar photocell using nickel oxide nanoparticles and an original structure that simplifies the production technology and reduces energy losses.
The resulting power density of 28.4 μW/cm2 at 400 lux, that is, the standard office illumination, is at least two and a half times higher than the silicon counterparts.
Tatiana Komaricheva, laboratory researcher