【摘 要】
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Tri-(8-quinolinato) aluminum (Alq) based organic light-emitting devices with different Alq thicknesses (10-90 nm) were fabricated.The device performance varies with Alq thickness.With increasing Alq t
【机 构】
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State Key Laboratory of Gansu Aduanced Non-Ferrous Metal Materials , School of Materials Science & E
【出 处】
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第四届全国信息光学与光子器件学术会议
论文部分内容阅读
Tri-(8-quinolinato) aluminum (Alq) based organic light-emitting devices with different Alq thicknesses (10-90 nm) were fabricated.The device performance varies with Alq thickness.With increasing Alq thickness,the luminescent efficiency at same current density increase first and then decrease,the device with Alq thickness of 50 nm exhibit highest luminescent efficiency of 5.2 cd/A.The efficiency drops and spectra red shift when the thickness is over 50 nm.Microcavity theory was applied to explain the observed phenomena and the refractive index of Alq was estimated to be l.73.which is in very good consistency with the reported result.
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