Buried Channel Solar Cells
Friday, June 4, 2010 - 02:10
in Physics & Chemistry
For solar cells to be viable (not relying on government mandates and subsidies) costs have to come down and efficiency must go up. Buried channel solar cells (BCSC) are one possible group of high efficiency devices. Characteristic for buried channel solar cells are that the front contacts (lighted surface) are placed in deep trenches, formed in silicon crystal. The idea, is to be minimized the width of the contact bars, by the increasing the contact thickness in deep. In this way the formed element has lower shadowing effect and additionally the contact resistance is decreased. The collected efficiency of the created by the light excess carriers is increased too. read more