Preparation method of rich acceptor type ZnO microtube

The invention relates to the technical field of semiconductor materials and optics, and provides a preparation method of a rich acceptor type ZnO microtube. The method comprises the steps that ZnO powder is used as a raw material, subjected to ball milling, dried and sieved through a 200-mesh sieve; the powder is placed into a long strip-shaped rubber balloon, compacted, closed, vacuumized and pressed into a biscuit bar with uniform thickness and density under isostatic pressure; the bar is placed into a pulling rotation sintering furnace to be sintered into a ceramic bar; the ceramic bar is placed into an optical floating region furnace, the output power of a floating region furnace halogen lamp is set to be 900-1050 W/h, oxygen/air is introduced in, heat is preserved for a certain period of time, the rich acceptor type ZnO microtube is prepared through the optical gasification supersaturated precipitation growing process, the acceptor state is long-acting and stable, and a new thought is provided for prepar