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Título : Optical Description of Mesostructured Organic−Inorganic Halide Perovskite Solar Cells
Autor : Anaya, Miguel ; Lozano, Gabriel ; Calvo, Mauricio E. ; Zhang, Wei; Johnston, Michael B.; Snaith, Henry J.; Míguez, Hernán
Fecha de publicación : 2015
Editor: American Chemical Society
Citación : Journal of Physical Chemistry Letters 6(1): 48-53 (2015)
Resumen: Herein we describe both theoretically and experimentally the optical response of solution-processed organic−inorganic halide perovskite solar cells based on mesostructured scaffolds. We develop a rigorous theoretical model using a method based on the propagation of waves in layered media, which allows visualizing the way in which light is spatially distributed across the device and serves to quantify the fraction of light absorbed by each medium comprising the cell. The discrimination between productive and parasitic absorption yields an accurate determination of the internal quantum efficiency. State-of-the-art devices integrating mesoporous scaffolds infiltrated with perovskite are manufactured and characterized to support the calculations. This combined experimental and theoretical analysis provides a rational understanding of the optical behavior of perovskite cells and can be beneficial for the judicious design of devices with improved performance. Notably, our model justifies the presence of a solid perovskite capping layer in all of the highest efficiency perovskite solar cells based on thinner mesoporous scaffolds
Versión del editor: http://dx.doi.org/10.1021/jz502351s
URI : http://hdl.handle.net/10261/109348
DOI: 10.1021/jz502351
E-ISSN: 1948-7185
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