Improvement in interlayer structure of p-i-n-type organic solar cells with the use of fullerene-linked tetrabenzoporphyrin as additive.

ABSTRACT: The additive effect on small-molecule-based p-i-n-type devices has been little investigated so far. We focus on the improvement of the miscibility of tetrabenzoporphyrin (BP) and [6,6]-phenyl-C₆₁-butyric acid methyl ester (PC₆₁BM) blend film by addition of fullerene-linked tetrabenzoporphyrin (BP-C₆₀) as an additive to the interlayer (i-layer). BP is one of the most promising p-type organic semiconductors, and BP films can be prepared readily by heating as-cast films of the precursor (a bicyclo[2.2.2]octadiene-fused porphyrin; CP), that results in changes from amorphous CP films to polycrystalline BP films. Because of the high crystallinity of BP, large BP grains on the scale of tens to hundreds of nanometers are generated in blend films of BP and PC₆₁

SUBMITTER: Tamura Y 

PROVIDER: S-EPMC9087363 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature