Spectral splitting photovoltaics using perovskite and wideband dye-sensitized solar cells.

ABSTRACT: The extension of the light absorption of photovoltaics into the near-infrared region is important to increase the energy conversion efficiency. Although the progress of the lead halide perovskite solar cells is remarkable, and high conversion efficiency of >20% has been reached, their absorption limit on the long-wavelength side is ?800?nm. To further enhance the conversion efficiency of perovskite-based photovoltaics, a hybridized system with near-infrared photovoltaics is a useful approach. Here we report a panchromatic sensitizer, coded DX3, that exhibits a broad response into the near-infrared, up to ?1100 nm, and a photocurrent density exceeding 30?mA?cm(-2) in simulated air mass 1.5 standard solar radiation. Using the DX3-based dye-sensitized solar cell in conjunction with a perovskite cell that harvests visible light, the hybridized mesoscopic photovoltaics achieved a conversion efficiency of 21.5% using a system of spectral splitting.

SUBMITTER: Kinoshita T 

PROVIDER: S-EPMC4667623 | biostudies-literature | 2015 Nov

REPOSITORIES: biostudies-literature