Advances and perspectives of spin coating techniques

Spin coating is a kind of economically friendly technology accompanied by outstanding application performance, which has been widely adopted in the functional thin film fabrication field. Widespread attention has been attracted owing to their superior controllability. In this paper, the fundamental principles, film quality evaluation methods, and the current development of the spin coating technique are discussed. Through the ideal model and empirical formula, the key factors controlling the film thickness are obtained and are ready to produce marvelous functional films. Currently, the manufacturing demand for solar cells in the energy market is calling for high-quality thin films. Therefore, spin-coating has become a promising candidate. The characteristics of the spin-coating methods reviewed in this paper are adopted to maximize the properties of the obtained films and provide theoretical support for the preparation of high-efficiency solar cells. Finally, this novel growth point of using the spin coating method in the photovoltaic film is forecasted.