A Spectrally Tunable Dielectric Subwavelength Grating based Broadband Planar Light Concentrator.

ABSTRACT: Energy consumption of buildings is increasing at a rapid pace due to urbanization, while net-zero energy buildings offer a green and sustainable solution. However, limited rooftop availability on multi-story buildings poses a challenge for large-scale integration of photovoltaics. Conventional silicon solar panels block visible light making them unfeasible to cover all the surfaces of a building. Here, we demonstrate a novel dielectric grating based planar light concentrator. We integrate this functional device onto a window glass transmitting visible light while simultaneously guiding near infrared (NIR) portion of sunlight to edges of the glass window where it is converted to electricity by a photovoltaic cell. Gratings are designed to guide NIR region and realize polarization independen

SUBMITTER: Elikkottil A 

PROVIDER: S-EPMC6692392 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature