Organic copolymer lasing from single defect microcavity fabricated using laser patterning

Abstract

This study uses a laser patterning setup to write defect structures into a conjugated polymer microcavity. We show that the defect enhances optical confinement and reduces the lasing threshold.

Selective Gain in a Periodic Array of Nano-organic Light-Emitting Diodes

“…Organic light-emitting diodes (OLEDs) have attracted extensive research interests due to their applications in efficient full-color displays, , solid-state lighting, − and liquid-crystal display backlighting sources. − OLEDs have multifold advantages, such as excellent flexibility, positive luminescence, simple preparation process, large-area devices, and a large variety of material availability. − Although efficient OLEDs have been reported for a large variety of organic semiconductors and structural designs, and optically pumped microcavity lasers have been achieved with low thresholds, − electrically pumped organic lasers have not been officially reported. Reasons may include the lower injection current than the threshold required by the lasing actions, and the designed structures cannot supply sufficiently high efficiency of optical confinement and optical gain.…”