Abstract: The present disclosure provides a laser-sintered perovskite solar cell and a manufacturing method thereof. The method includes: forming a hole blocking layer on a conductive base substrate; forming a mesoporous nanocrystalline layer on the hole blocking layer, and sintering the mesoporous nanocrystalline layer through a laser beam; forming an insulation interlayer on the mesoporous nanocrystalline layer; forming a counter electrode layer on the insulation interlayer, and sintering the insulation layer and the counter electrode layer; and applying a perovskite precursor solution on the counter electrode layer to obtain the laser-sintered perovskite solar cell.

Abstract: A preparation method of cemented carbide with FeCoCu medium-entropy alloy as binding phase is provided. The preparation method includes: 1) preparing FeCoCu precursor powders by solution combustion synthesis; 2) preparing FeCoCu medium-entropy alloy powders by mechanical alloying; 3) evenly mixing the FeCoCu medium-entropy alloy powders with ultra-fine WC powders and a binder to obtain mixed powders and pressing the mixed powders into a shaped green body; 4) preparing a WC-FeCoCu cemented carbide by microwave sintering after removing the binder from the shaped green body. The preparation method reduces sintering temperature and time and obtains a new-type cemented carbide with fine grains, high hardness and good toughness while reducing the cost.