Color Tunable pi-Conjugated Polymers for Solar-Cell Applications: Engineering of Bandgap, Interface, and Charge Transport Properties
Jegadesan Subbiah, Kaushik Roy Choudhury, Stefan Ellinger, John R Reynolds, Franky So
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | Published : 2010
While power-conversion efficiency is an important metric for energy harvesting in polymer solar cells (PSCs), the aesthetics of the devices is also important in some special applications. To fabricate aesthetically pleasing PSCs, we have designed and synthesized a series of blue, bluegreen, and green -conjugated copolymers (P1, P2 , and P3) comprising electron-rich 3,4-dioxythiophenes (DOTs) and electron-deficient 2,1,3-benzothiadiazole (BTD) as the donoracceptor units. In this paper, we review the optical, electrochemical, morphological, and charge transport properties of these DOTBTD copolymers, and demonstrate how the color of the polymers and the solar-cell performance can be controlled ..View full abstract
This work was supported by Sestar Technologies, LLC, USA.