摘要
Themechanismofcarriertransportinorganiclight-emittingdevicesisnumericallystudied,onthebasisoftrappedcharge-limitedconductionwithanexponentialtrapdistribution.Thespatialdistributionsoftheelectricalpotential,fieldandcarrierdensityintheorganiclayerarecalculatedandanalysed.Mostcarriersaredistributednearthetwoelectrodes,onlyafewofthemaredistributedovertheremainingpartoftheorgaiclayer,Thecarriersareaccumulatedneartheelectrodes,andtheremainingregionisalmostexhaustedofcarriers.Whenthecharacteristicenergyoftrapdistributionisgreaterthan0.3eV.itleadstoareductionofcurrentdensity.Inordertoimprovethedeviceefficiency,organicmaterialswithminortrapsandlowcharacteristicenergyshouldbechosen.Thediffusioncurrentisthedominantcomponentneartheinjectionelectrode.whereasthedriftcurrentdominatestheremainingregionoftheorganiclayer.
出版日期
2002年10月20日（中国期刊网平台首次上网日期，不代表论文的发表时间）
