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Valved Organic Evaporators for OLEDs Organic Electronics
In the emerging organic semiconductor/OLED markets there is a need for valved evaporators capable of rapid flux change. The first available evaporator from Oxford Applied Research, model ORG50V, has a 50cc capacity. The design, incorporating a patented in-line valve, eliminates the thermal inertia of conventional un-valved evaporators and additionally conserves feedstock during bakeout. The evaporant flux can be changed in seconds over a wide dynamic range and beam profile tailored to the user’s requirements - from pencil beam to large area shower head configurations. The K-cell section is conveniently loaded externally with liquid/solid feedstock without disturbing the valve and beam-outlet head. Scale-up to higher cell capacity can be readily achieved.


Feedstock capacity

K-cell temperature

600oC (max)

PID autotune contrro
Valve dynamic range

Beam diameter

variable (selectable)
Flange mount

Bakeout (UHV compatible)

to 250oC

integrated glove-box/evaporator unit

The graph below demonstrates sub-second manual flux changes. Note flux constancy and no overshoot.
Dowload the brochure in PDF format: ORG50V