Theoretical Study on the Surface Modified TiO2:P3HT Hybrid solar Cells
Date Issued
2012
Date
2012
Author(s)
Tang, Yu-Shiuan
Abstract
In this thesis, we develop a theoretical model for modeling the current-voltage characteristics of surface modified TiO2/P3HT hybrid solar cells. This model considers the adsorption of photons, the excitation and transport of excitons, the formation of polaron, and its dissociation to free charge carriers. The transport of free charge carriers is governed by the poisson and continuity equations.
We found that the surface modifier enhances the efficiency of polaron dissociation. The efficient polaron dissociation can result in high fill factor and high open circuit voltage. However, compared with the organic polymer solar cells, there is a significant loss of excitons before they can be converted to poalrons in surface modified TiO2/P3HT solar cell. This is the main reason for the lowered efficiency of the surface modified TiO2/P3HT solar cells.
Subjects
surface modifier TiO2/P3HT hybrid solar cell
stretched exponential
theoretical model
Type
thesis
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