2016/02/01 by Zhyrair Gevorkian, V. Gasparian, Vladimir Gasparian +2
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Absorption (acoustics) #Chalcogenide Semiconductor Thin Films #Charge carrier #Chemical physics #Chemistry #Condensed matter physics #Conducting polymers and applications #Crystallography #Diffusion #Exciton #Halide #Heterojunction #Inorganic chemistry #Materials science #Mean free path #Optics #Optoelectronics #Perovskite (structure) #Perovskite Materials and Applications #Physics #Planar #Scattering #Thermodynamics #cond-mat.mtrl-sci
paper · pdf · doi:10.1063/1.4941242
published as Applied Phys.Lett. v.108, Issue 5, 051109,(2016) · 9pages,1figure
openalex publication_date 2016/02/01 · arxiv created 2016/02/04 · arxiv updated 2016/03/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Solar cells based on organometal halide perovskites have recently become very promising among other materials because of their cost-effective character and improvements in efficiency. Such performance is primarily associated with effective light absorption and large diffusion length of charge carriers. Our paper is devoted to the explanation of large diffusion lengths in these systems. The transport mean free path of charged carriers in a perovskite/TiO2 heterojunction that is an important constituent of the solar cells have been analyzed. Large transport length is explained by the planar diffusion of indirect excitons. Diffusion length of the coupled system increases by several orders compared to single carrier length due to the correlated character of the effective field acting on the exciton.