Front contact solar cell having conductive layers formed on the front and rear surfaces

摘要

A bipolar solar cell (100) includes a backside junction formed by a silicon substrate (101) and a first doped layer (108) of a first dopant type on the backside of the solar cell. A second doped layer (106) of a second dopant type makes an electrical connection to the substrate (101) from the front side of the solar cell (100). A first metal contact (110) of a first electrical polarity electrically connects to the first doped layer (108) on the backside of the solar cell, and a second metal contact (102) of a second electrical polarity electrically connects to the second doped layer (106) on the front side of the solar cell (100). An external electrical circuit may be electrically connected to the first and second metal contacts to be powered by the solar cell (100).