28 citations · 50 across the 3 of their papers we have counts for
5 papers
Device-spectroscopy of magnetic field effects in a polyfluorene organic light-emitting diode
T. D. Nguyen, J. Rybicki, Y. Sheng +1
We perform charge-induced absorption and electroluminescence spectroscopy in a polyfluorene organic magnetoresistive device. Our experiments allow us to measure the singlet exciton…
Theory of magnetoresistance based on variable-range hopping in the presence of Hubbard interaction and spin-dynamics
M. Wohlgenannt
We develop a theory of magnetoresistance based on variable-range hopping. An exponentially large, low-field and necessarily positive magnetoresistance effect is predicted in the pr…
Comment on Frequency response and origin of the spin-1/2 photolumines-cence-detected magnetic resonance in a pi-conjugated polymer
C. G. Yang, E. Ehrenfreund, Z. V. Vardeny
In a recent paper Segal et al. [1] attempted to explain the dynamics of spin 1/2 photoluminescence detected magnetic resonance (PLDMR) in films of a pi-conjugated polymer, namely a…
Large magnetoresistance at room-temperature in small molecular weight organic semiconductor sandwich devices
Ö. Mermer, G. Veeraraghavan, T. L. Francis +1
We present an extensive study of a large, room temperature negative magnetoresistance (MR) effect in tris-(8-hydroxyquinoline) aluminum sandwich devices in weak magnetic fields. Th…
Multiphonon emission model of spin-dependent exciton formation in organic semiconductors
Markus Wohlgenannt
The maximum efficiency in organic light-emitting diodes (OLEDs) depends on the ratio, , where () is the singlet (triplet) exciton formation rate. Several rece…