Since the carrier mobility in organic materials is very low , no collision excitation is possible . the short wavelength peak is due to direct bombardment by electrons from sic > 2 . we name this luminescence as cathodoluminescence - like ( cl - like ) emission or solid state cathode luminescence because the energized electrons are accelerated in solid instead of in vacuum 這樣在有機層中的電子數(shù)是nl n計n汁n ,空穴數(shù)是p n ( n是類陰極射線激發(fā)出的電子,也是類陰極射線激發(fā)出的空穴兒這兩類載流子的復合將比單純有機發(fā)光的復合nip增加了( n計n葉n )叮( l n計n葉n ) n 。