Sixth Year Program for MURI Center for Advanced Organic Photovoltaics:Pushing Non-Fullerene Acceptors Further
Abstract
This research project builds on the research efforts carried out in the recent MURI Center for Advanced Organic Photovoltaics program and is a collaboration between the University of Colorado Boulder, the Georgia Institute of Technology, the University of California at Santa Barbara, and the University of Arizona. The program aims to understand the fundamental process and losses in high-performance (>15% power conversion efficiency) organic solar cells based on polymer:non-fullerene acceptor (NFA) bulk heterojunctions. This understanding will be achieved through: i) synthesizing high-performance donor polymers with tunable properties and fine-tuning the substituents of NFAs that afford high-performance solar cells; ii) using advanced characterization techniques to study the effects on film morphology of the chemical structures of both polymer and NFA and of processing methods; iii) studying phase separation, mixing, and molecular interactions using molecular dynamics simulations and density functional theory calculations; iv) investigatingthe device physics, specifically focusing on voltage losses (energetic offsets, radiative and non-radiative losses, and energetic disorder) in high-performance blends; v) establishing a comprehensive understanding of the relation between charge generation and recombination losses and recombination and extraction dynamics in high-performance cells under operating conditions; and vi) determining the effects of new self-assembled monolayer hole- and electron-collecting interlayers on the film morphology and device performance and physics of polymer:NFA cells.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 15, 2021
- Source ID
- N000142112180
Entities
People
- Seth Marder
Organizations
- Office of Naval Research
- Regents of the University of Colorado
- United States Navy