机电工程技术
機電工程技術
궤전공정기술
MACHANICAL & ELECTRICAL ENGINEERING TECHNOLOGY
2014年
9期
44-48,143
,共6页
空间电荷限制电流%载流子迁移率%磷光掺杂
空間電荷限製電流%載流子遷移率%燐光摻雜
공간전하한제전류%재류자천이솔%린광참잡
Space Charge Limited Currents (SCLC)%mobility of carrier%phosphorescent dye doping
利用空间电荷限制电流的方法测定有机材料的空穴迁移率。用SCLC方法测试得到NPB, m-MTDATA, CBP, Balq四种有机材料的空穴零场迁移率，拟合绘制出四种材料在不同电场下空穴的场依赖迁移率。测试不同浓度红色磷光染料Ir(piq)2(acac)掺杂到这四种母体后空穴迁移率的变化情况，分析发现，掺杂母体与客体的能级匹配是研究载流子在掺杂层输运模式的关键，其直接决定了有机材料空穴迁移率的大小。
利用空間電荷限製電流的方法測定有機材料的空穴遷移率。用SCLC方法測試得到NPB, m-MTDATA, CBP, Balq四種有機材料的空穴零場遷移率，擬閤繪製齣四種材料在不同電場下空穴的場依賴遷移率。測試不同濃度紅色燐光染料Ir(piq)2(acac)摻雜到這四種母體後空穴遷移率的變化情況，分析髮現，摻雜母體與客體的能級匹配是研究載流子在摻雜層輸運模式的關鍵，其直接決定瞭有機材料空穴遷移率的大小。
이용공간전하한제전류적방법측정유궤재료적공혈천이솔。용SCLC방법측시득도NPB, m-MTDATA, CBP, Balq사충유궤재료적공혈령장천이솔，의합회제출사충재료재불동전장하공혈적장의뢰천이솔。측시불동농도홍색린광염료Ir(piq)2(acac)참잡도저사충모체후공혈천이솔적변화정황，분석발현，참잡모체여객체적능급필배시연구재류자재참잡층수운모식적관건，기직접결정료유궤재료공혈천이솔적대소。
The method of Space Charge Limited Currents (SCLC) was employed to measure the zero field mobility of four organic materials, including NPB, m-MTDATA, CBP and Balq. The field-dependent hole mobilities under different electric fields were fitted and drawn for the four organic materials. Different concentrations of test red phosphorescent dye Ir(piq)2(acac) were doped into candidate hosts of the above-mentioned four organic materials,and the hole mobilities of the doped organic materials were measured and analyzed. Results showed that the energy level matching between the host and guest material is the key factor influencing the transport mode of carriers in doped layer,which directly determines the hole mobility of the organic material.
