STRUCTURAL ANALYSIS OF LAYERS OF PEROVSKITE SOLAR CELL BY USING SMARTLAB X-ray DIFFRACTOMETER
Abstract
- X-ray structure and crystallite size of fabricated layers of perovskite solar cell were investigated. The first layer, compact TiO2 layer was deposited using a spray pyrolysis method. The structure TiO2 is tetragonal and crystallite size of first TiO2 layer is 43.20 nm. The second mesoporous TiO2 was deposited by screen printing of TiO2 slurry and the crystallite size is 53.10 nm. The third ZrO2 space layer was printed on the top of the TiO2 layer using ZrO2 paste and the crystallite size is 33.26 nm. The structure of ZrO2 is monoclinic. Then, a carbon counter electrode was coated on the top of the ZrO2 layer by printing carbon slurry and the crystallite size is 27.00 nm. The CH3NH3PbI3 perovskite layer was prepared by two-step solution method. The unit cell structure is tetragonal and the crystallite sizes lie between 22.30 nm to 27.40 nm. From XRD results, the lattice constants of CH3NH3PbI3 are 8.86 Å and 12.66 Å. The bond distances among the atoms of perovskite layer are 2.66 Å at Pb1-I1, 3.15 Å at Pb1-I2 and 1.13 Å at C1-N1.
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Year
- 2020
Author
-
Hsan Htoo
Subject
- Physics
Publisher
- Myanmar Academy of Arts and Science (MAAS)