Abstracts Book - IMRC 2018

• SC4-P091
EVALUATION OF THE EFFECT OF THE CsI’S CONCENTRATION IN
THE THIN FILMS OF THE COMPOUND Cs(X) FA(1-X) PbI3 WITH
PEROVSKITE STRUCTURE FOR USE AS AN ACTIVE LAYER ON
SOLAR CELLS
Leidy Julieth Herrera Torres 1
1
Universidad de América, , Colombia.
In this work it has been established parameters for the synthesis of thin films of
Perovskite CsX FA(1-X) PbI3 from the precursors FAI and PbI2 using as solvent
gamma-butyrolactone (GBL). As a method of deposition, it was used the spin
coating technique on a glass substrate, thereby obtaining the films that will be
used as an active layer on the hybrid solar cells. It was evaluated the effect of
the Cesium (Cs) / Formamidinium (FA) ratio in the optical, morphological and
structural properties of thin films of CsX FA(1-X) PbI3 with Perovskite structure
through diffuse reflectance measurements, X-ray diffraction (DRX), scanning
electron microscope (SEM) and atomic force microscopy (AFM). From the results
obtained by the measurements made it was possible to establish synthesis
parameters that assurance of good material properties such as film thickness,
energy gap and photonic absorption coefficient, it is presenting of this way
greater thermal and structural stability, these results are favorables for the
development efficient and low-cost of solar cells of type Perovskite.
Keywords: Perovskites, Formamidinium lead iodide, Energy Gap
Presenting authors email: leidy.herrera@estudiantes.uamerica.edu.co