Polythiophenes comprising conjugated pendants for polymer solar cells: A review
Journal
Materials
Journal Volume
7
Journal Issue
4
Pages
2411-2439
Date Issued
2014
Author(s)
Abstract
Polythiophene (PT) is one of the widely used donor materials for solution-processable polymer solar cells (PSCs). Much progress in PT-based PSCs can be attributed to the design of novel PTs exhibiting intense and broad visible absorption with high charge carrier mobility to increase short-circuit current density (Jsc), along with low-lying highest occupied molecular orbital (HOMO) levels to achieve large open circuit voltage (Voc) values. A promising strategy to tailor the photophysical properties and energy levels via covalently attaching electron donor and acceptor pendants on PTs backbone has attracted much attention recently. The geometry, electron-donating capacity, and composition of conjugated pendants are supposed to be the crucial factors in adjusting the conformation, energy levels, and photovoltaic performance of PTs. This review will go over the most recent approaches that enable researchers to obtain in-depth information in the development of PTs comprising conjugated pendants for PSCs. © 2014 by the authors.
Subjects
Conjugated pendants; Energy level engineering; Polymer solar cells; Polythiophene
SDGs
Other Subjects
Electron energy levels; Open circuit voltage; Polymers; Solar cells; Sulfur compounds; Conjugated pendants; Highest occupied molecular orbital; Large open circuit voltages; Photophysical properties; Photovoltaic performance; Poly-thiophene; Polymer solar cell (PSCs); Polymer Solar Cells; Conjugated polymers
Type
review