Toward High Efficiency Water Processed Organic Photovoltaics: Controlling the Nanoparticle Morphology with Surface Energies (Adv. Energy Mater. 26/2023)

Water-based solar cells over 10% efficiency: designing soft nanoparticles for improved processability

“…In comparison to the Laval et al study, lower performances were achieved, mainly due to lower J SC and FF. This difference can be explained by the change in PTQ10 molar mass (60 kg mol À1 in Laval et al, 23 versus 110 kg mol À1 herein), resulting in lower intermolecular diffusion of Y6 in the PTQ10 domains. Nevertheless, the same thermal treatment (200 1C) was required to achieve the highest performances.…”

“…For instance, Laval et al recently reported a record efficiency of 9.98% for miniemulsion-based solar cells using PTQ10 :Y6 NPs stabilized by SDS, with an optimized donor:acceptor morphology due to close interfacial energies. 23 A high annealing temperature of 200 1C was, however, required to achieve homogeneous film formation and optimum performance. Such…”

An innovative in situ AFM system for a soft X-ray spectromicroscopy synchrotron beamline

“…14 Soft X-ray microscopy is indeed becoming a more and more widespread analytical tool for investigating complex systems at the micrometric and sub-micrometric levels, especially when combined with X-ray spectroscopy capabilities. 15 Several synchrotrons worldwide have installed STXM beamlines, [16][17][18][19][20][21][22][23][24][25] similar to each other but at the same time each with unique capabilities. STXM is a scanning technique where the sample is usually raster-scanned across a micro-or nano-probe by photons delivered by suitable X-ray optics (Fig.…”

The Importance of Semiconductor Miscibility for the Formation of Light‐Harvesting Polymer:Fullerene Nanoparticle Dispersions

“…A mitigation to this performance deterioration is the extensive dialysis of the dispersion to remove surfactant excess. [7,8] The synthesis of surfactant-stabilized nanoparticle dispersions often utilizes miniemulsions. [9][10][11][12] 2) Alternatively, nanoparticle dispersions have been stabilized by electrostatic effects through self-charging of nanoparticles [13] or p-doping by strong acceptors, omitting any surfactants.…”