3results about How to "Evenly stacked" patented technology

This invention discloses an inverse perovskite solar cell and its fabrication method that utilizes a tetrathiofulvalene derivative to regulate the self-assembled monolayer (SAM) assembly structure. The invention uses bis(carbazolium phosphate) SAM-4PABCz as the hole-selective interface layer, employs an ethanol / NMP mixed solvent system, and introduces a tetrathiofulvalene (TTF) derivative as a dopant. By leveraging the steric hindrance effect and non-covalent intermolecular interactions of the TTF derivative, the out-of-plane π-π interactions between bis(carbazolium phosphate) molecules are weakened, inducing the molecules to shift from a high-tilt-angle "standing" stacking of SAM molecules to a low-tilt-angle near-flat arrangement. This regulation strategy effectively suppresses island-like aggregation of SAMs, reduces the interface defect state density, promotes uniform and ordered molecular stacking, and forms a uniform and dense hole-selective contact interface.

This utility model belongs to the field of additive manufacturing technology, specifically relating to an extrusion-type rotary platform 3D printer, including a support assembly, a moving assembly, an extrusion assembly, and a rotating assembly. The support assembly includes a lower housing, an upper housing, and support columns, with multiple support columns installed above the lower housing. The upper housing is installed above the support columns and is fixedly connected to the lower housing via the support columns. The moving assembly includes a lead screw, a first motor, and a moving support plate. The lead screw is installed above the first motor and passes through and meshes with the moving support plate. The extrusion assembly includes an extruder body, a feed inlet, a heated extrusion device, and an extrusion nozzle. This utility model solves the problems of existing 3D printers requiring additional internal support structures, low stability, and frequent nozzle movement when printing tubular and rotating models in medical and industrial manufacturing fields.