Postprint version. Published in Applied Physics Letters, Volume 61, Issue 26, December 28, 1992, pages 3092-3094.
NOTE: At the time of publication, the author David Braun was not yet affiliated with Cal Poly.
The definitive version is available at https://doi.org/10.1063/1.107971.
The transient electroluminescence from polymer light-emitting diodes is reported. When the devices are mounted on a microstrip transmission line, the temporal response is limited by the electrode geometry, with rise and fall times below 50 ns. With low duty-cycle pulses (0.5%) the electroluminescence intensity remains proportional to the current at values up to 10 A/cm2, two orders of magnitude greater than possible under direct current operation. Since the spectral blue-shift observed at high current levels (with power dissipation above 1 W/cm2) indicates significant sample heating, still higher levels should be possible with proper thermal management.
Electrical and Computer Engineering
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