Featured in Testing the waters – 07-2011

Precision coating

Selective emitter process: The thin, uniform application of dopants is critical to the successful formation of selective emitters on photovoltaic cells. Considerable effort is ongoing to improve the efficiency of photovoltaic cells. Recently, much attention has been given to the formation of selective emitters to significantly improve the efficiency of the solar cell. In a two-part series, Ultrasonic System’s President Stuart Erickson and Chinalight Solar’s Senior Engineer, Yang Song, Deputy Director of Research and Development, Ye Duan, and Deputy General Manager Youzhong Li elaborate.

One of the first steps in the manufacturing process of silicon photovoltaic cells is to form a p-n junction. This is accomplished by the thermal diffusion process in which a dopant is applied to the surface of the wafer and then the wafer is exposed to a high temperature of 900 to 1,000 degrees Celsius …

pv magazine
This article is part of pv+
Subscribe digitally to unlock exclusive investigative reporting, expert insights, in-depth analysis, and premium background coverage. Your subscription also includes full access to the digital edition of our magazine.