Guest emission processes in doped organic light-emitting diodes: Use of phthalocyanine and naphthalocyanine near-IR dopants

Article Abstract:

A series of near-IR emitting organic light-emitting diodes were prepared using poly(vinyl-carbazole) (PVK) as the hole transport polymer, aluminum quinolate (Alq3) or sulfonamide derivates (Al(qs)3) as the host dye (H), and phthalocyanine (Pc) or naphthalocyanine (NPc) dopants as the guest dyes. It reveals that the hole captured by the guest dye from oxidized PVK, followed by cross reaction were an important charge trapping light producing pathway at sufficiently high concentrations of the guest dye.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Science & research, Basic Chemical Manufacturing, Industrial Organic Chemicals, Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Light Emitting Diodes, Phthalocyanine, Research, Organic compounds, Light-emitting diodes, LEDs, Chemistry, Physical and theoretical, Physical chemistry, Phthalocyanins

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Effects of surface modification and moisture on the rates of charge transfer between metals and organic materials

Article Abstract:

A study of the kinetics of contact charging resulting from the rolling of millimeter-sized metallic spheres on flat surfaces of polystyrene (PS) is presented. Charging was studied for different values of the relative humidity of the air in contact with the system, in acidic and basic atmospheres and for a series of PS surfaces oxidized to different degrees.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polystyrene, Styrene Resins, Polystyrene Resins NEC, Analysis, Charge transfer, Metallic elements

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