Polymer Nanocomposites as Hole Transport Layer for High Performance Perovskite Solar Cells
Date Issued
2015
Date
2015
Author(s)
Wang, Jhong-Yao
Abstract
In recent years, highly power conversion efficiency perovskite solar cell has attracted many scientists’s eyes. Because of the help of good absorbtion range and intensity, the perovskite solar cell can produce more excitons than usual active layer materials. The PCE is almost reach 20% from 3.81% in a short six years. It shows the perovskite solar cell has a great potential to deal with the world’s energy problems. This research is mainly about the fabrication of perovskite solar cell, first we spin coating the electron transport material TiO2 on the cleaned FTO substrate, then, sintering the substrate at 600℃ for 6 hours to form a compact TiO2 layer. After it cools down, we spin coating the perovskite precursor on top of the compact TiO2 layer at glovebox (H2O <0.1ppm),than we spin coating the hole transport material P3HT after annealing the perovskite precursor, and last, depositing the gold by thermal evaporation. The most important achievement in this thesis is to introduce Au-NPs into the P3HT layer, to enhance the absorbtion of the perovskite layer by scattering as well as the conductivity of P3HT layer. Therefore, the power conversion efficiency of the perovskite based solar cells can be greatly increased. The obtained cell efficiency sets the highest record for the perovskite solar cells made with the same structure.
Subjects
perovskite solar cell
hole transport material
Au-NPs
scattering
Type
thesis