Journal
PHYSICAL REVIEW B
Volume 81, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.165206
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Funding
- German Federal Ministry for Education and Research BMBF [FKZ 13N8166A]
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We study the dynamics of a diode pumped organic semiconductor laser based on the polymer-polymer guest-host system F8BT and MEH-PPV. Regardless of the duration of the pump pulse, lasing persists for only a few nanoseconds. In two separate experiments we study in detail the contribution of triplet-singlet annihilation and triplet state absorption. On this basis we were able to model the laser dynamics. As a result, we show that depending on the supplied energy density of the pumping source, triplet-singlet annihilation or triplet state absorption play the prevalent role.
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