Efficient inverted quasi-bilayer organic solar cells fabricated by using non-halogenated solvent processes

Abstract

Here we demonstrate the fabrication of novel, “quasi-bilayer” inverted organic photovoltaic devices using halogen-free solvents.

Breaking the 10% Efficiency Barrier in Organic Photovoltaics: Morphology and Device Optimization of Well‐Known PBDTTT Polymers

“…However, these solvents are highly toxic halogen‐containing solvents, which are detrimental to human health and the environment. From the aspect of industrialization of OPVs, it is highly desired for greener solvents, for example, non‐halogenated solvents and solvent additives . Non‐halogenated solvent processing can potentially eliminate the use of halogen solvents in OPV manufacturing.…”

Layer-by-layer fabrication of organic photovoltaic devices: material selection and processing conditions

“…Initial reports focused on hybrid processing, where the first layer was deposited through blade coating. 179,221 Investigations involving deposition of both layers via blade coating (Scheme 2e) were only reported in 2019. 28,30,31,222 A summary of device performance and processing conditions for LbL OPVs fabricated from blade coating can be found in Table 10.…”

Enhancing Performance of Large‐Area Organic Solar Cells with Thick Film via Ternary Strategy

“…Therefore, scholars have focused on developing solvents to replace chlorinated solvents. Few works show that the PCE of a device processed with chlorine‐free solvent is similar to that of its counterpart processed with chlorinated ones . Vogt and Li and co‐workers used binary chlorine‐free solvent mixtures to mimic the Hansen solubility parameters of chlorine analogs .…”