1. Design and Equipment Considerations for Organic Light Emitting Diodes Experiments
Luogen Xu with Faculty Mentor Dr. James Rybicki | Department of Physics and Astronomy
Structure and Mechanism
Ionization Energy
For further study, lab
apparatus is expected
to:
Rotate around z-axis.
Be adjustable.
Alleviate operating
obstacles caused by
small-scale devices.
Have no impact on
any variables involved. Φ-
LUMO e- e-
Electron
Injection Φ+ Eg +
Hole Injection +
HOMO
Modeling and Designing
Cathode
Anode
Finalized dimensions of other parts of the design
Computer Aided Design (CAD) software was used in modeling and designing process.
Holes and electrons are injected from opposite sides.
Matching the work function of anode electrode and cathode electrode with the highest occupied molecular orbitals (HOMO) level and lowest unoccupied molecular orbitals (LUMO) level respectively facilitates decent rates of injection.
Electrons from LUMO recombine with holes from HOMO to form excitons (electron/hole pairs). Photons are emitted after excitons relax to ground state.
Design “cloud-ly”
Onshape, promotes itself as the first and only full-cloud 3D CAD system.
Cloud features flexibility as opposed to traditional CAD software that can hardly be shared and edited simultaneously for multiple users.
Powerful mate connector features.
Large community ready to provide professional advices and solutions to conceivable questions.
Translucent view of the model of magnetic stand used in experiment
Picture of the magnetic stand
Outcomes and experience
Think the way designers and engineers do.
Identify technological obstacles and manage to overcome most.
Learn how to realize your designs using fabricating equipment, e.g. machine shop.
Details of design
Cathode e- e- e- e- e- e e e e e + + + + +
Dimensions must provide decent space for human operations of the mount.
Mechanical feasibility was taken into account as well as the stability of the mount.
Anode
Pictures of the machine shop at UWEC
Need for design
Acknowledgements
Experiments conducted by Austin Riedl with Dr. James Rybicki show intriguing results about OLEDs.
Turner Howard, Instrumentation Specialist – University of Wisconsin, Eau Claire
Department of Physics and Astronomy – University of Wisconsin, Eau Claire
Normal view of the mount with to-scale screws and washers assembled.
Trimetric view of the design of the mount