https://scholars.lib.ntu.edu.tw/handle/123456789/350028
標題: | Enhanced optical absorption of organic materials via surface plasmon resonance in gold nanoparticles | 作者: | Lai, W.-C. GUO-DUNG JOHN SU |
關鍵字: | DDSCAT; I-V curve measurement; Organic materials; Solar cell; Spectrum response; Surface plasmon | 公開日期: | 2009 | 卷: | 7416 | 來源出版物: | Proceedings of SPIE - The International Society for Optical Engineering | 摘要: | The surface plasmon resonance, which occurs between the dielectric material layer and the metal surface, is of great interest in several fields including the materials to fabricate solar cell, because the enhanced electromagnetic field caused by surface plasmon resonance increases the optical absorption of solar cell by adding metal nanoparticles.[1] The metal nanoparticles used in this paper are spherical gold nanoparticles, which can enhance the optical absorption via the excitation of surface Plasmon resonance in an organic photovoltaic cell. [2] The shape, size, spacing, and the surrounding dielectric materials of nanoparticles affect the absorption ratio and absorption peak with different wavelengths [3-4]. We designed the solar cell consisting of one p-type and one n-type organic materials. The gold nanoparticles used in this paper are 5nm, 10nm, and 20nm in diameter, respectively. They are deposited on ITO (indium tin oxide) glass substrates, and then organic materials are deposited on them. The first organic layer is Poly (styrenesulfonate) / poly(2,3-dihydro- thieno-1,4-dioxin) (PEDOT) as p-type organic semiconductor. We used three different materials for the second organic layer. The first is poly {2-methoxy- 5-(2-ethylhexyloxy)-1, 4-phenylenevinylene} (MEHPPV) with Fullerene(C 60) mixtures, the second material is poly(3- hexylthiophene)(P3HT) and [6,6]-phenyl-C71 butyric acid methyl ester(PC70BM) mixture, and the third material is poly(3-hexylthiophene)(P3HT) and [6,6]-phenyl-C61 butyric acid methyl ester(PCBM) mixture as n-type organic semiconductor. By using the DDSCAT software, the Discrete Dipole Approximation for Scattering and Absorption of Light by Irregular Particles, the SPR enhancement and absorption peak can be predicted in this software, and the enhancement caused by surface plasmon resonance within the layers of this device is supposed to be related to the photocurrent in this organic photovoltaic cell with gold nanoparticles. By using the spectrum response measurement, the spectrum response of these three solar cell structures agrees well to the result as DDSCAT software simulated. © 2009 SPIE. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-70449570772&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/350028 |
DOI: | 10.1117/12.826059 | SDG/關鍵字: | DDSCAT; I-V curve measurement; Organic materials; Spectrum response; Surface plasmon; Absorption; Carrier mobility; Cells; Computer software; Electromagnetic fields; Esterification; Esters; Fatty acids; Fullerenes; Gold; Light; Light absorption; Mixtures; Nanoparticles; Photoelectrochemical cells; Photovoltaic cells; Photovoltaic effects; Plasmons; Semiconducting organic compounds; Solar cells; Surface plasmon resonance; Surfaces; Tin; Dielectric materials |
顯示於: | 電機工程學系 |
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