کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1263994 972098 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hybrid intermediate connector for tandem OLEDs with the combination of MoO3-based interlayer and p-type doping
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Hybrid intermediate connector for tandem OLEDs with the combination of MoO3-based interlayer and p-type doping
چکیده انگلیسی

We report on a high-quality hybrid intermediate connector (IC) used in tandem organic light-emitting diodes (OLEDs), which is composed of an ultrathin MoO3 interlayer sandwiched between a n-type Cs2CO3-doped 4,7-diphenyl-1,10-phenanthroline (BPhen) layer and a p-type MoO3-doped N,N′-diphenyl-N,N′-bis(1-naphthyl)-(1,1′-biphenyl)-4,4′-diamine (NPB) layer. The charge generation characteristics for light emission in tandem OLEDs have been identified by studying the interfaces and the corresponding devices. The hybrid IC structure exhibits superior charge generation capability, and its interfacial electronic structures are beneficial to the generation and injection of electrons and holes into bottom and top emission units, respectively. Compared to the organic-TMO bilayer and doped p–n junction structures, the hybrid IC structure combining MoO3-based interlayer and p-type doping can effectively decrease the driving voltage and improve the current efficiency of tandem devices due to the increased bulk heterojunction-like charge generation interfaces. Our results indicate that the TMO-based hybrid IC structure can be a good structure in the fabrication of high-efficiency tandem OLEDs.

Figure optionsDownload as PowerPoint slideHighlights
► A hybrid intermediate connector for tandem OLED is demonstrated.
► An ultrathin MoO3 interlayer is sandwiched between Cs2CO3:BPhen and MoO3:NPB.
► Efficient charge generation is achieved due to favorable energy level alignment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 13, Issue 11, November 2012, Pages 2243–2249
نویسندگان
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