This article reports the unique dimeric packing of POSS-PDI-POSS shape amphiphile which has great enhanced photoluminescent properties in the crystals compared with the more amorphous solid state.
The defects at perovskite film surface could be passivated effectively using a derivative of polyhedral oligomeric silsesquioxane with an amino-group (NH2-POSS). The extremely low trap-state energy level (0.045 eV) was obtained by temperature-dependent admittance measurements. Both stability and efficiency in devices have been approved.
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