Narrow Gap, High Mobility, and Stable Pi Conjugated Polymers
Abstract
High mobility and ambient stable, processable pi-conjugated and electroactive polymers for optoelectronic and redox charge storage applications were developed. Dithienogermole (DTG) was developed as a new electron donor and isoindigo (iI) as a new electron acceptor. By alternating electron donor (D) and acceptor (A) moieties, new charge transport and solar polymers have been developed. Using dithienosilole (DTS) in conjunction with benzothiadiazole (BTD) as an acceptor, field-effect hole mobilities are enhanced by several orders of magnitude, reaching up to 0.1 cm2V-1s-1. Combining DTG with the thienopyrrolodione (TPD) acceptor has lead to solar polymers that exhibit AM1.5 power conversion efficiencies (PCE) in excess of 8% (7.4% certified). Using polydimethylsiloxane (PDMS) as an additive for isoindigo-based molecular OPV, an enhanced PCE in terms of both magnitude and repeatability is observed, which is backed up by reproducible morphologies imaged by AFM and TEM. Isoindigo has been used in a bis-EDOT capped, electropolymerizable D-A-D system to yield highly electroactive films applied in Type 1 Supercapacitors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 20, 2012
- Accession Number
- ADA571327
Entities
People
- John R. Reynolds
Organizations
- University of Florida