Improved interconnecting structure for a tandem organic light emitting diode

Abstract

Two-unit tandem organic light emitting diodes (OLEDs) employing two kinds of interconnecting structures, i.e.

Highly Efficient Hybrid White Tandem Organic Light‐Emitting Diodes with MoO3 Layer

“…The energies of HOMO and LUMO levels were obtained for NPB and BCzVBi from Kim et al, [35] for ADN and DPyPA from Sun et al, [36] for CBP from Qi et al, [37] for (fbi) 2 Ir(acac) from Wang et al, [23] for SBFK from Chinet et al [41] and for MoO 3 from Liu et al [16] while the work function was obtained for ITO and Al from Li et al [38] and Li et al, [39] respectively. As seen from this diagram, the LUMO levels between EML and ETL are close to each other in both EL1 and EL2.…”

The Advanced Charge Injection Techniques Towards the Fabrication of High-Power Organic Light Emitting Diodes

“…Though this method led to almost the same electrical properties in the inverted OLEDs as those in the regular OLEDs, it is relatively complicated and therefore unsuitable for use in the mass production of the active matrix OLED displays. Here, we introduce the increased electron injection in inverted bottomemission OLEDs (IBOLEDs) via using the combination of two n-ETLs [13][14][15][16].…”

“…in OLEDs. However, recent work [13][14][15][16] shows that the combination of the above two classes of n-doped materals may increase current in IBOLEDs as described below.…”

The improved performance in inverted organic light-emitting diodes using the hybrid-p-doped hole transport layer

“…As a result, to increase the OLED brightness markedly at a given voltage, which is equivalent to decrease the power loss of device, has become a pressing issue. Recently, the structure of uniting two n-doped electron transport layers has been used to increase the electron current in OLEDs and thereby the device performance [3][4][5][6]. Thus, from a view of holeelectron balance, it is necessary to develop the ways to increase the hole current in OLEDs.…”