Skip to Content
Merck

Highly efficient perovskite solar cells with tunable structural color.

Nano letters (2015-02-05)
Wei Zhang, Miguel Anaya, Gabriel Lozano, Mauricio E Calvo, Michael B Johnston, Hernán Míguez, Henry J Snaith
ABSTRACT

The performance of perovskite solar cells has been progressing over the past few years and efficiency is likely to continue to increase. However, a negative aspect for the integration of perovskite solar cells in the built environment is that the color gamut available in these materials is very limited and does not cover the green-to-blue region of the visible spectrum, which has been a big selling point for organic photovoltaics. Here, we integrate a porous photonic crystal (PC) scaffold within the photoactive layer of an opaque perovskite solar cell following a bottom-up approach employing inexpensive and scalable liquid processing techniques. The photovoltaic devices presented herein show high efficiency with tunable color across the visible spectrum. This now imbues the perovskite solar cells with highly desirable properties for cladding in the built environment and encourages design of sustainable colorful buildings and iridescent electric vehicles as future power generation sources.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Phenethylammonium iodide
Sigma-Aldrich
Acetamidinium iodide
Sigma-Aldrich
Ethylammonium Iodide
Sigma-Aldrich
n-Propylammonium iodide
Sigma-Aldrich
Benzylammonium iodide
Sigma-Aldrich
Dimethylammonium iodide
Sigma-Aldrich
n-Butylammonium iodide
Sigma-Aldrich
Guanidinium iodide, ≥99%
Sigma-Aldrich
Methylammonium bromide
Sigma-Aldrich
Phenylammonium iodide
Sigma-Aldrich
Formamidinium iodide
Sigma-Aldrich
Methylammonium iodide