Low thresholds for a nonconventional polymer blend—Amplified spontaneous emission and lasing in F81−x:SYx system. Issue 1 (22nd October 2015)

• Record Type: Journal Article
• Authors: Hassan, Muhammad Umair; Liu, Yee‐Chen; Butt, Haider; Hasan, Kamran ul; Chang, Jui‐Fen; Olawoyin, Ayooye Abigael; Friend, Richard Henry
• Is Part Of: Journal of polymer science. Volume 54:Issue 1(2016)
• Page Start: 15
• Page End: 21
• Publication Date: 2015-10-22
• Subjects: amplified spontaneous emission -- low threshold -- optical pumping -- polymer blend; 547
• DOI: 10.1002/polb.23947
• Languages: English
• ISSNs: 0887-6266

Abstract

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/cm 2 and ≈8 µJ/cm 2 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 : A nonconventional polymer blend system, F81− x :SY x based on poly(9, 9‐dioctylfluorene) (F8) and one of the poly( para ‐phenylenevinylene) derivatives, superyellow (SY), shows low thresholds for amplified spontaneous emission and optically pumped lasers. The blend system also shows excellent performance when used as an emissive layer in polymer LEDs. The combination of excellent optical and electro‐optical properties of F81−x :SYx make this system interesting for future research on advanced device architectures such as polymer injection lasing.