Improving FWHM and Extraction Efficiency of RGB OLEDs with MQW Structure

Shaimaa Gamal, Tawfik Ismail, I. Talkhan
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引用次数: 1

Abstract

In this paper, RGB organic light-emitting diodes are developed using a multiple quantum well (MQW) structure to improve the average percentage between the far-field power and the dipole source power which is known as the Extraction Efficiency (EE), and the full-width half-maximum (FWHM). Then the proposed structure is compared with a conventional OLED structure. Red ph-OLED QW, in which 4-(dicyanomethylene)-2-(t-butyl)-6-methyl-4H-pyran(DCJTB) doped (8-hydroxyquinoline) aluminum (Alq3) as emitting layer (EML) and N, N′-Di(1-naphthyl)-N, N′-diphenyl-(1,1 ′-biphenyl)-4,4′-diamine (NPB) is used as a hole transport layer (HTL) and interlayer [DCJTB doped Alq3/NPB/ DCJTB doped Alq3]n, Green ph-OLED, in which the 4,4′-bis(Ncarbazolyl)-1,1′-biphenyl (CBP) and tris[2-phenylpyridinatoC2, N]iridium(III) [Ir(ppy)3] are used as the emission layer and N, N′-Di(1-naphthyl)-N, N′-diphenyl-(1,1′-biphenyl)-4,4′-diamine (NPB) are used as a hole transport layer (HTL) and interlayer [CBP: Ir(ppy)3/ TCTA/ CBP: Ir(ppy)3]n and Blue ph-OLED (8-hydroxyquinoline) aluminum (Alq3) and N, N0-diphenyl-N, N0-bis(3-methylphenyl)-1,10-biphenyl-4,40-diamine) (TPD) are used as a hole transport layer (HTL) and interlayer [Alq3/TPD/Alq3]n, n is the well number, which can range from 0 to 6. MQW solved the main problem in the RGB OLEDs: the holes mobility and electrons mobility, which are not the same. Consequently, it leads to the loss and reduction of the Extraction Efficiency (EE). Then, there is a comparison between the output EE before and after applying the MQW on the RGB OLED structures, using the Lumerical Finite Difference Time Domain (FDTD) simulation.
提高MQW结构RGB oled的FWHM和提取效率
本文采用多量子阱(MQW)结构开发了RGB有机发光二极管,以提高远场功率与偶极源功率之间的平均百分比,即提取效率(EE)和全宽半最大值(FWHM)。然后将所提出的结构与传统OLED结构进行了比较。红色ph-OLED QW, 4 - (dicyanomethylene) 2 -(叔丁基)6-methyl-4h-pyran (DCJTB)掺杂8 -羟基喹啉)(铝(Alq3)作为发光层(EML)和N, N’di (1-naphthyl) - N, N’二苯基-(1,1’联苯)4,4’二胺(NPB)作为空穴传输层(HTL)和夹层(DCJTB掺杂Alq3 / NPB DCJTB掺杂Alq3] N,绿色ph-OLED, 4, 4’bis (Ncarbazolyl) 1, 1 '联苯(CBP)和三羟甲基氨基甲烷(2-phenylpyridinatoC2 N)液铱(III) (Ir (ppy) 3)用作发射层和N,采用N′-二(1-萘基)-N, N′-二苯基-(1,1′-联苯)-4,4′-二胺(NPB)作为空穴传输层(HTL)和中间层[CBP: Ir(ppy)3/ TCTA/ CBP: Ir(ppy)3] N和Blue ph-OLED(8-羟基喹啉)铝(Alq3)和N, n0 -二苯基-N, n0 -二(3-甲基苯基)-1,10-联苯-4,40-二胺)(TPD)作为空穴传输层(HTL)和中间层[Alq3/TPD/Alq3] N, N为孔数,取值范围为0 ~ 6。MQW解决了RGB oled的主要问题:空穴迁移率和电子迁移率不相同。因此,它会导致萃取效率(EE)的损失和降低。然后,利用时域有限差分(FDTD)仿真比较了将MQW应用于RGB OLED结构前后的输出EE。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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