Solar panels and chargers work best indoors when placed in a window in full view of the sun. However, they may also produce electricity when exposed to the light that is emitted by interior lights.
Are indoor photovoltaics a good energy source for wireless devices?
Until recently, with the advent of the Internet of Things (IoT), indoor photovoltaics (IPVs) that convert indoor light into usable electrical power have been recognized as the most promising energy supplier for the wireless devices including actuators, sensors, and communication devices connected and automated by IoT technology (5, 6).
What are indoor photovoltaics & how do they work?
Indoor photovoltaics (IPVs) harvest ambient light to produce electricity and can cleanly power the rapidly growing number of Internet-of-Things (IoT) sensors. The surge in IPV development, with new proposed materials, devices and products, creates the need to critically evaluate how IPV devices have advanced and to assess their prospects.
Are solar cells suitable for indoor applications?
Therefore, the fabrication of specially designed solar cells for indoor applications is not an easy task. Different parameters of solar cells must be optimized for indoor light conditions. The device should be designed in such a manner that it can operate efficiently under the illumination of the most commonly used indoor light sources.
Can photovoltaics power indoor IoT devices?
A particularly promising route to addressing these challenges is to use photovoltaics (PV) to harvest ambient light inside buildings to power indoor IoT devices. Indeed, indoor photovoltaics (IPV) are widely deployable because of the common availability of lighting inside buildings and their reliance on radiative energy transfer.
1.1. Indoor photovoltaics Indoor photovoltaics (IPV) emerged in PV technology in present scenario due to the ease of power generation under simple indoor light conditions and also serve the fastest energy supplements for growing technologies like Internet of Things (IoT).
Are solar cells suitable for indoor light harvesting?
In this study, we performed a detailed review of the development of various solar cells for indoor applications. It is thus observed that although ISCs are dominating the outdoor solar cell market, they are not suitable for use as indoor light-harvesting units because of their low bandgap energy and poor mechanical flexibility.