Low thresholds for a nonconventional polymer blend-Amplified spontaneous emission and lasing in F81− x: SY x system.

ABSTRACT A mixture of two polymer materials, poly (9,9-dioctylfluorene) (F8), and one of the poly( para-phenylenevinylene) derivatives, superyellow (SY) have been used to make F81− x:SY x polymer blend system. Under a 3-5 ns pulsed-laser excitation, this system showed excellent optical properties with low threshold values of ≈14 µJ/cm2 and ≈8 µJ/cm2 for amplified spontaneous emission and optically pumped lasing, respectively. The proposed system was also electroluminescent and an interesting candidate for future research on polymer injection lasers. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 15-21 [ABSTRACT FROM AUTHOR]