Solar cell and manufacturing method thereof, processing method of n-type doped silicon film and semiconductor device

Abstract

Embodiments of the present disclosure provide a solar cell and a manufacturing method thereof, a processing method of an n-type doped silicon film, and a semiconductor device. The manufacturing method of the solar cell includes: providing a silicon wafer; forming an n-type doped silicon film on a first main surface of the silicon wafer at a first temperature, and simultaneously forming the n-type doped silicon film on at least a portion of surfaces of the silicon wafer except the first main surface due to wrapping around; performing a heat treatment on the n-type doped silicon film at a second temperature; etching and removing the n-type doped silicon film on the surfaces of the silicon wafer except the first main surface after performing the heat treatment; and preparing the solar cell by using the silicon wafer, the first temperature is lower than the second temperature.