Month: March 2024

Research Highlights: Deuteration-enhanced neutron contrasts to probe amorphous domain sizes in organic photovoltaic bulk heterojunction films

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Organic photovoltaics (OPVs) is a promising third-generation PV technology due to its unique advantages including tuneable absorption spectrum, mechanical robustness, and low cost upon upscaling. However, the similar chemical structures of the donor (D) and acceptor (A) materials constituting the OPV photo-active layer renders its morphology characterization challenging.

In this work, we resolved this problem by combining grazing-incidence small-angle neutron scattering (GISANS) with targeted deuteration.… Read More

Research Highlights: Iso-BAI Guided Surface Recrystallization for Over 14% Tin Halide Perovskite Solar Cells

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Tin-based perovskite solar cells (PSCs) are promising environmentally friendly alternatives to their lead-based counterparts, yet they currently suffer from much lower device performance. Due to variations in the chemical properties of lead (II) and tin (II) ions, similar treatments may yield distinct effects resulting from differences in underlying mechanisms. In this work, a surface treatment on tin-based perovskite is conducted with a commonly employed ligand, iso-butylammonium iodide (iso-BAI).… Read More