Real-time monitoring polymerization degree of organic photovoltaic materials toward no batch-to-batch variations in device performance.

ABSTRACT: Polymerization degree plays a vital role in material properties. Previous methodologies of molecular weight control generally cannot suppress or alleviate batch-to-batch variations in device performance, especially in polymer solar cells. Herein, we develop an in-situ photoluminescence system in tandem with a set of analysis and processing procedures to track and estimate the polymerization degree of organic photovoltaic materials. To support the development of this protocol, we introduce polymer acceptor PYT constructed by near-infrared Y-series small molecule acceptors via Stille polymerization, and shed light on the correlations between molecular weight, spectral parameters, and device efficiencies that enable the design of the optical setup and confirm its feasibility. The universality

SUBMITTER: Xu LY 

PROVIDER: S-EPMC10858892 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature