Solid additive tuning of polymer blend morphology enables non-halogenated-solvent all-polymer solar cells with an efficiency of over 17%

Abstract

All-polymer solar cells (all-PSCs) have attracted considerable interests, owing to their superior device stability and mechanical robustness. Recently, all-PSCs have achieved high power conversion efficiency (PCE) over 17% benefitted from...

Simple Solvent Treatment Enabled Improved PEDOT:PSS Performance toward Highly Efficient Binary Organic Solar Cells

“…On the other hand, the solar cell based on PM6:BTP-2F-ThCl can achieve an efficiency of 17.70%, also outperforming the counterparts. At last, a 17.14% PCE is gained here due to the better HTM layer, which is one of the best values for non-halogenated solvent-treated binary all-polymer solar cells. − …”

Achieving 31% efficiency in organic photovoltaic cells under indoor light using a low energetic disorder polymer donor

“…The higher charge mobilities in the PB4-based cell than that of the PB2-based cell may be attributed to the smaller energetic disorder. 28 The energy loss ( E loss ) of the OPV cells is investigated by using the highly sensitive EQE (HEQE) and electroluminescence (EL) measurements. The spectra and corresponding E loss parameters are shown in Fig.…”

“…Besides, weakly aggregated polymers are prone to produce indistinguishable phase separation morphology with an electron acceptor, resulting in extremely low short-circuit current densities ( J SC s) and fill factors (FFs) of the resulting OPV cells, while strongly aggregated polymers could form large domain sizes, leading to low J SC s in the given OPV cells. 27,28 Therefore, appropriate molecular design methods should be used to fine-tune the molecular aggregation behaviors.…”

Highly efficient and stable binary all-polymer solar cells enabled by sequential deposition processing tuned microstructures

“…The SqP devices demonstrate optimal efficiency as high as 16.5%, among the highest level of PCEs for non-halogenated solvent processed all-PSCs. [42][43][44][45][46][47][48] The increase of PCE mainly comes from FF improvement, but also partially benefits from slightly higher V OC and J SC . In addition, the external quantum efficiency (EQE) spectra of these two types of devices are measured and depicted in Fig.…”