Panasonic's Amorton family has a special program for indoor use. These amorphous silicon (a-Si) thin-film technology solar cells are sensitive to mainly visible light. This is approximately the same as the sensitivity curve of the human eye. Indoor lighting such as LED and fluorescent lamps are also located in that area, while incoming (filtered) daylight is also largely located there.
Unfiltered sunlight in the open air still has a lot of energy in the higher spectrum, which is suitable for the sensitivity curve of crystalline panels (c-Si).
The Amroton a-Si cells offer 0.63V per cell with a maximum of 17.0 ?A/cm2 which corresponds to 7.3 ?W/cm2. The standard program consists of a-Si cells vapor deposited on a glass substrate. There are 19 versions in 5 voltage variants from 1.9-5.0Voc, with powers from 8.8?Wp to 0.28mWp. The dimensions vary from 15x15x0.7mm to 97x57x1.1mm.
To customer specifications, instead of the usual glass substrate, a flexible plastic can also serve as a basis to create a bendable whole and even stainless steel, which is unbreakable.
The application:
- stand-alone power supply
- as support, in combination with primary batteries
- to charge a battery
Typical areas of application are indoor IOT sensors, powering handheld electronics. The a-Si modules can also be used as a light detector because the sensitivity corresponds to the human eye.