Plasmonic effects and the morphology changes on the active material P3HT:PCBM used in polymer solar cells using Raman spectroscopy. (8th April 2016)

• Record Type: Journal Article
• Authors: Yang, Yuzhao; Sun, Lu; Ou, Jiemei; He, Yiting; Lin, Xiaofeng; Yuan, Zhongke; Lin, Wensheng; Hong, Wei; Yu, Dingshan; Chen, Xudong; Qiu, Zhiren
• Is Part Of: Journal of Raman spectroscopy. Volume 47:Number 8(2016)
• Page Start: 888
• Page End: 894
• Publication Date: 2016-04-08
• Subjects: polymer solar cells -- plasmonics -- morphology -- silver nanowires -- Raman spectroscopy; Raman spectroscopy -- Periodicals; 535.846
• DOI: 10.1002/jrs.4917
• Languages: English
• ISSNs: 0377-0486

Abstract

Abstract : There is no consensus yet that the enhancement effects of plasmonic device are predominantly caused by plasmonic effects or induced morphology changes in the optoelectronic `materials. Herein, we present a detailed Raman characterization of a typical organic P3HT:PCBM system comprising silver nanowires (Ag NWs) with different size, which can simultaneously study the plasmonic effects and the morphology changes. The direct comparison of the Raman spectra of non‐annealed and annealed samples indicates that the morphology of plasmonic samples has changed before annealing and the morphology of plasmonic samples and reference sample after annealing is not distinguishable. This indicates that the interaction between P3HT and Ag NWs with different size can be explained by plasmonic effects after annealing. Moreover, in‐situ Raman spectroscopy is used to study the morphology changes in plasmonic samples with different diameters of Ag NWs during heating process. This method can distinguish the plasmonic effects and morphology changes of plasmonic device. Copyright © 2016 John Wiley & Sons, Ltd. Abstract : A detailed Raman characterization of a type of organic optoelectronic materials comprising silver nanowires (Ag NWs) with different size is presented, which can simultaneously study the plasmonic effects and the morphology changes. Our Raman results can distinguish the plasmonic effects and morphology changes of plasmonic device and thus provide a clear picture regarding the nature of the enhancement effect.