Efficient Tandem Organic Light Emitting Diode Using Organic Photovoltaic Charge Generation Layer

Table 1

The detail device structures of red and blue OLEDs.

Device	Device Name	Layer Structure
Red conventional OLED	A	ITO/EL/LiF (2 nm)/Al (150 nm)
Red Tandem OLED	R	ITO/EL/CGL/EL /LiF (2 nm)/Al (150 nm)
Blue conventional OLED	B1	ITO/EL 1/LiF (2 nm)/Al (150 nm)
Blue Tandem OLED	B2	ITO/EL 1/CGL/EL 1/LiF (2 nm)/Al (150 nm)

EL: Mo(3 nm)/NPB (40 nm)/α-NPD: (30 nm, 20% by volume)/Bphen (30 nm).
EL 1: Mo(3 nm)/NPB (40 nm)/sDPVBi (30 nm) /Bphen (30 nm).
CGL: Al (3 nm)/LiF (2 nm)/C70 (5 nm)/CoPc (5 nm).