Lumen Efficiency of Cold Cathode Fluorescent Lamp (CCFL) Improvement with MgO Coated Cathode

MgO coated Ni cup cathodes are used to improve the lumen efficiency of CCFL. The preliminary work has indicated that e-beam evaporated layers of magnesium oxide (MgO), which has a large secondary electron emission coefficient, can increase the lumen efficiency of CCFLs by 15-20%