CD Skripsi
Sintesis Dan Karakterisasi Lapisan Tipis Zno Doping Se Sebagai Electron Transport Material (Etm) Pada Sel Surya Perovskit
Zinc oxide (zinc oxide, ZnO) is one of the main components of perovskite solar
cells (PSC), namely electron transport material (ETM). Improvement of perovskit
solar performance can be achieved by modifying the electrical and optical
properties of its ETM by doping from other elements. In this research, seleniumdoped
ZnO (Se-ZnO) thin film has been fabricated onto fluorine-doped tin oxide
(FTO/SnO2:F) glass and been applied as ETM for perovskit solar cells. Se-ZnO
nanorod thin layer was grown using the seed mediated hydrothermal method
through two routes, namely the seeding and growing. Se-ZnO nanorod was grown
on the surface of a transparent FTO substrate by varying the volume addition of
selenium solution, that is 0 mL, 0,025 mL, 0,05 mL, 0,1 mL and 0,2 mL to obtain
Se-ZnO atomic ratio of 0%, 0,25%, 0,5%, 1% and 2% repectively. The Se-ZnO
thin film samples were synthesized at a temperature of 90° C for 5 hours. ZnO and
Se-ZnO thin films were then characterized using Ultraviolet-Visible Spectroscopy
(Uv-Vis), X-Ray Diffraction (XRD), Emission Field Electron Scan Microscope
(FESEM), and X-ray Dispersive Energy (EDX) to determine consecutive
absorption spectrum light, the crystal structure of the material, surface
morphology and elemental composition. The pure ZnO and Se-ZnO samples were
then applied as a material transport electron (ETM) of a perovskite solar cell. The
solar cell efficiency was measured using a current-voltage (I-V) measurement.
The UV-Vis spectrum revealed that the Se-ZnO nanorod thin film has an
absorption peak in the wavelength range of 300-380 nm for all samples. The XRD
pattern exhibited five peaks at an angle of 2θ: 31,70 °; 34,4 °; 36,2 °; 47,5 ° and
56,3° representing the orientation of the crystal planes (100), (002), (101), (102)
and (110) of hexagonal lattice. The FESEM photo demonstrated that the
geometric shape of the Se-ZnO nanostructure is a nanorod with a hexagonal cross
section. The EDX spectrum showed the composition of Zn, O and Se are in
accordance with the preparation compositions in all samples. The I-V
measurement result of the Se-ZnO 1% sample under the intensity of 100 mW/cm2
halogen lamp irradiation increase 10 times compared to the non-doped ZnO
sample.
keyword: Perovskit solar cell, nanorods ZnO, Selenium, seed mediated
hydrothermal method.
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