Design, Synthesis, and Characterization of Small-Molecule Materials for Organic Solar Cells
Date Issued
2014
Date
2014
Author(s)
Ting, Hao-Chun
Abstract
rganic Solar Cells (OSCs) have been regard as cost-effective and promising sources of electricity with environmentally benign sustainability. The p-type organic materials as electron donors for OSCs were developed prosperously in the past few decades. Recently, the performance of small-molecule organic solar cells (SMOSCs), has approached the results that organic polymer solar cells achieved, demonstrated high potential as alternatives to silicon-based solar cells for the next generation of power sources in photovoltaics (PV). The research in this dissertation was focus on the design, synthesis, and characterization of small-molecule materials with donor-acceptor-acceptor (D-A-A) molecular configuration for OSCs. Furthermore, each part of composition in D-A-A donors was investigated to develop the relationship between the structure-property and photovoltaic performance. In this dissertation, design principles for small-molecule materials were illustrated in Chapter 1 and contributed into the construction of D-A-A organic donors. Further discussion of each functional moieties in D-A-A organic donors along with various fundamentality-influence were organized including electronic and steric effects of electro-donating units, the novel asymmetric strategies for diversity of middle electron-withdrawing units in OSCs, the manipulation of energy levels through the modification of terminal electro-withdrawing units and their application in one-step synthesis of D-A-A organic donors for sustainable chemistry. Through the permutation and combination of building block in the D-A-A organic donors, we could control the intrinsic properties of D-A-A organic donors that were explored to connect the molecular structures with the performance of SMOSCs.
Subjects
organic semiconductor
organic solar cells
SDGs
Type
thesis