Figure 6.
Optical microscope images of a,b) PBDTTT‐C‐T/DC‐IDT2T and c,d) PBDTTT‐C‐T/PC71BM films a,c) before and d,b) after exposing to sunlight for 180 h. The scan size of all images is 500 × 500 μm.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.