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How efficient are indoor photovoltaics?

Thus, it is important that efficiencies for indoor photovoltaics are reported in the range of 100 – 1000 lx, so that any result is directly applicable to the operation in the largest number of cases when applied in real-life environments.

Can photovoltaic energy harvesting improve the sustainability of a building?

Indoor energy harvesting by photovoltaics (PV) has the potential to improve the sustainability and reduce the carbon footprint of a building environment, by powering low consumption devices, portable electronics, communication infrastructures and sensors for the IoT, enabling the technological revolution of the future.

What is the difference between indoor and outdoor photovoltaic devices?

Efficiency varies with irradiance, so outdoor photovoltaic devices are optimized for low series resistance, whereas indoor devices are optimized for high shunt resistance. The indoor reference spectra are defined only in the visible region of the spectrum, between 380 nm and 780 nm.

How efficient are photovoltaic materials?

(For references see Table 1, Table 2, Table 3, Table 4, Table 5, Table 6). From Fig. 18a, it is evident that photovoltaic (PV) materials with higher bandgaps, particularly in the range of 1.8 – 2 eV, can efficiently harvest the indoor light spectrum, delivering a theoretical efficiency limit of around 55 %.

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