3 years ago

Non-Halogenated Solvent-Processed Single-Junction Polymer Solar Cells with 9.91% Efficiency and Improved Photostability

Non-Halogenated Solvent-Processed Single-Junction Polymer Solar Cells with 9.91% Efficiency and Improved Photostability
High-efficiency bulk heterojunction (BHJ) polymer solar cells (PSCs) with power conversion efficiencies of 9.91% are achieved by using non-halogenated and environment-friendly solvent. To the best of our knowledge, it is the champion efficiency achieved by the random polymer based PSCs which are processed with all non-halogenated solvents. The photostability of the PSCs processed from halogenated solvent and non-halogenated solvent is intensively investigated by using grazing incidence wide-angle X-ray scattering (GIWAXS) combined with resonant soft X-ray scattering (R-SoXS) measurement, which is found to be efficient in monitoring the changes of the blend film morphology during irradiation. The results suggest that the crystallinity of the polymer as well as the domain purity of the blends with 1,8-diiodooctane (DIO) residual decrease dramatically in the illumination condition, due to sensitivity of DIO based device to the illumination. In contrast, the PffBT-2TPF4-9/1:PC61BM based PSCs processed with non-halogenated solvents show much better photostability and high efficiency. Therefore, our study offer an effective method to investigate the photostability of PSCs. It suggests that non-halogenated solvents can be excellent alternatives for large area printing of high-performance PSCs.

Publisher URL: www.sciencedirect.com/science

DOI: S2211285517305499

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.