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

Table 2

C-V characteristics of three devices D1, D2, and D3.

Device	Layer Structure
D1	ITO/LiF (50 nm)/C70(5 nm)/CoPc (5 nm)/Mo(50 nm)/Al(150 nm)
D2	ITO/LiF (50 nm)/C70(5 nm)/NPB(5 nm)/Mo(50 nm)/Al(150 nm)
D3	ITO/LiF (50 nm)/Bphen(5 nm)/CoPc (5 nm)/Mo(50 nm)/Al(150 nm)