Quartz boat for diffusion

The utility model relates to the production technical field of a solar battery, particularly relating to a quartz boat for diffusion. The device (quartz boat) comprises a side connecting piece and a bracket. The bracket comprises a pair of upper brackets and a pair of lower brackets. The upper brackets are symmetrically fixed at an upper inner side wall of the side connecting piece, the lower brackets are symmetrically fixed at a bottom inner side wall of the side connecting piece, a plane where the upper brackets are located and a plane where the lower brackets are located are parallel to each other, and a distance between the upper brackets is larger than a distance between the lower brackets. Upper bracket inner side surfaces and lower bracket inner side surfaces are provided with grooves with different intervals. After using the device to diffuse, open-circuit voltage and short-circuit current of the solar battery can be raised, thus conversion efficiency is raised, controlling the square resistance of the battery is easier, uniformity is increased, the method is easy, and operation is convenient.