In this paper, we derive the Mott-Gurney Law for space-charge-limited current and model the current density characteristics for a bilayer polymer light emitting diode (ITO/PPV/CN-PPV/Al). The organic material is assumed to be trap free and the influence of electric field on the carrier mobilities is neglected. Since the hole energy barrier between the ITO and PPV is less than 0.60 eV, the bottleneck for current flow is bulk-limited, resulting in space-charge-limited current. We discuss future plans for interposing a thin-layer of metal (Au, Pt, Pd, or AuPd) between the ITO and PPV. Experimental data will be compared to the J-V curve produced in this model, providing insight on how the metal buffer influences the range of potentials for which the current is space-charge-limited. Finally, the emissive spectrum is modeled with consideration of phonon-exciton coupling.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.