By discussing using different host material（4,4,-bis-triphenylsilanyl-biphenyl）BSB;（1,4-bis（triphenyllsily）benzene） UGH2;（1,3-bis（9H-carbazol-9-yl）benzene）MCP to make red organic emitting-lighting device,the devices construct is ITO／Meo-TPD（30 nm）／NPB（20 nm）／MCP：Ir（piq）3（5%：20 nm）／BCP（5 nm）／TPBi（40 nm）／LiF（1 nm）／Al.the MCP as the host material for the device luminance is best.when the applied voltage reaches 16 V,the device luminance 4514 cd/m2,when BSB as the host material,the ΔH Between host and object of the HOMO is larger,the leakage current is smaller,Corresponding luminous efficiency is higher,the maximum efficiency of 3.30 cd/A at 7 V.%文章讨论了分别利用（4,4,-bis-triphenylsilanyl-biphenyl）BSB;（1,4-bis（triphenyllsily）benzene）UGH2;（1,3-bis（9H-carbazol-9-yl）benzene）MCP三种不同的主体材料制备有机电致红光器件.所用的器件结构为：ITO／Meo-TPD（30 nm）／NPB（20 nm）／MCP：Ir（piq）3（5%：20 nm）／BCP（5 nm）／TPBi（40 nm）／LiF（1 nm）／Al,主体材料为MCP时,主客体之间的LUMO能级之差较小,该组器件的亮度最大,当外加电压达到16 V时,器件的发光亮度为4514cd/m2.当以BSB为主体材料时,主客体之间的的HOMO能级之差ΔH较大,器件的漏电流较小,相应的发光效率较高,当电压为7 V时,器件的最大电流效率为3.30 cd/A.
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