A polymer library enables the rapid identification of a highly scalable and efficient donor material for organic solar cells
Martina Rimmele, Zhuoran Qiao, Julianna Panidi, Francesco Furlan, Chulyeon Lee, Wen Liang Tan, Christopher R. McNeill, Youngkyoo Kim, Nicola Gasparini, Martin Heeney
Abstract
][1,2,5]thiadiazole acceptor comonomer. This allowed for the ready preparation of a library of eleven donor polymers of varying side chains and comonomers, which facilitated a rapid screening of properties and photovoltaic device performance. Donor FO6-T emerged as the optimal material, exhibiting good solubility in chlorinated and non-chlorinated solvents and achieving 15.4% PCE with L8BO as the acceptor (15.2% with Y6) and good device stability. FO6-T was readily prepared on the gram scale, and synthetic complexity (SC) analysis highlighted FO6-T as an attractive donor polymer for potential large scale applications.