H‐Shaped Oligofluorenes for Highly Air‐Stable and Low‐Threshold Non‐Doped Deep Blue Lasing. (24th March 2014)

• Record Type: Journal Article
• Authors: Qian, Yan; Wei, Qi; Del Pozo, Gonzalo; Mróz, Marta M.; Lüer, Larry; Casado, Santiago; Cabanillas‐Gonzalez, Juan; Zhang, Qi; Xie, Linghai; Xia, Ruidong; Huang, Wei
• Is Part Of: Advanced materials. Volume 26:Number 18(2014)
• Page Start: 2937
• Page End: 2942
• Publication Date: 2014-03-24
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201305355
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201305355-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>H‐shaped oligofluorenes</bold> as gain media exhibit excellent photo‐ (large robustness against oxidation) and thermal stabilities in ambient atmosphere for large σ<italic>_e</italic> and low‐threshold (0.22 nJ pulse⁻¹) deep blue distributed feedback (DFB) lasers. Their amplified spontaneous emission (ASE) thresholds increase less than 3‐fold and the emission spectra exhibit almost no shift with film samples annealed up to 200 °C in open air. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgh5bnjbp" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>