New Ternary Blend Strategy Based on a Vertically Self-Assembled Passivation Layer Enabling Efficient and Photostable Inverted Organic Solar Cells.

ABSTRACT: Herein, a new ternary strategy to fabricate efficient and photostable inverted organic photovoltaics (OPVs) is introduced by combining a bulk heterojunction (BHJ) blend and a fullerene self-assembled monolayer (C₆₀ -SAM). Time-of-flight secondary-ion mass spectrometry - analysis reveals that the ternary blend is vertically phase separated with the C₆₀ -SAM at the bottom and the BHJ on top. The average power conversion efficiency - of OPVs based on the ternary system is improved from 14.9% to 15.6% by C₆₀ -SAM addition, mostly due to increased current density (J_sc ) and fill factor -. It is found that the C₆₀ -SAM encourages the BHJ to make more face-on molecular orientation because grazing incidence wide-angle X-ray scattering - data s

SUBMITTER: Jeong S 

PROVIDER: S-EPMC10265084 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature