Organic Photovoltaic and Photodetector Fabrication
(above) Organic vapor phase deposition (OVPD) chamber. OVPD is a growth technique developed by OCM that allows for more efficient materials usage and greater control of surface morphology than vacuum thermal evaporation. Organic vapor is entrained in an inert carrier gas which carries it to a substrate. The pressure of the carrier gas can be adjusted from the millitorr range to tens of torr, changing its mass transport properties. OVPD has proven very useful for growing crystalline thin films and is a major focus OCM's organic photovoltaic cell research.
(above) The OVPD is connected to a dedicatd Angstrom Amod vacuum thermal evaporator through the glovebox. This for the deposition of additional layers of organic or metal without exposing substrates to air.
(above) The Denton vacuum thermal evaporator is used for Organic PV and photodetector growth. It is a smaller system that can be easily reconfigured to deposit new materials. It is a workhorse of OCM's photovoltaic cell research.
(above)The Denton tool is attached to a nitrogen glovebox that allows substrates to be handled in an oxygen and moisture free environment.
(above) A dedicated vacuum thermal evaporation chamber is used to deposit perylene layers for organic decvices.
