Joel Ager Archives | The American Ceramic Society

Joel Ager

Bismuth ferrite research sheds light on increasing PV efficiency

By Eileen De Guire / September 19, 2011

At top, domains with opposite electrical polarization, averaging about 140 nanometers wide and separated by walls 2 nanometers thick, form a well-aligned array in a thin film of bismuth ferrite. When illuminated, electrons collect on one side of the walls and holes on the other, driving the current at right angles to the walls. Voltage…

Read More