Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics
Critical Role of Polystyrene Layer on Plasmonic Silver Nanoplates in Organic Photovoltaics
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DOI：
10.1021/acsaem.8b01860
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发表时间：
2019-03
影响因子：
6.4
通讯作者：
Jonathan Metzman;Assad U. Khan;B. Magill;G. Khodaparast;J. Heflin;Guoliang Liu
中科院分区：
文献类型：
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作者：
Jonathan Metzman;Assad U. Khan;B. Magill;G. Khodaparast;J. Heflin;Guoliang Liu
等离子体纳米粒子在有机光伏（OPV）中产生大的局部电场增强，显着增强光的吸收，从而提高设备效率。在本报告中，各向异性银纳米板（AgNPs）被硫醇封端的聚苯乙烯（PS-SH）功能化，产生聚苯乙烯功能化银纳米板（PS-AgNPs）。将 PS-AgNP 直接旋涂在 OPV 活性层聚（3-己基噻吩-2,5-二基）:[6,6]-苯基 C61 丁酸甲酯 (P3HT:PCBM) 上。 PS-AgNP 溶液浓度的系统变化与活性层上不同的纳米颗粒密度相关。 PS-AgNP 的局域表面等离子体共振 (LSPR) 增强了活性层的光吸收，这直接导致了激子产率的增加，P3HT 薄膜中光致发光发射强度的增加证明了这一点。此外，PS-AgNPs 的加入降低了串联电阻并增加了光电流...
Plasmonic nanoparticles create large local electric field enhancements in organic photovoltaics (OPVs), substantially enhance the absorption of light, and consequently improve the device efficiency. In this report, anisotropic Ag nanoplates (AgNPs) were functionalized by thiol-terminated polystyrene (PS-SH) to yield polystyrene-functionalized Ag nanoplates (PS-AgNPs). The PS-AgNPs were spin-coated directly on the OPV active layer, poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61 butyric acid methyl ester (P3HT:PCBM). A systematic variation of the PS-AgNP solution concentration correlated to different nanoparticle densities on the active layer. The localized surface plasmon resonance (LSPR) of the PS-AgNPs enhanced the light absorption of the active layer, which directly contributed to an increase in exciton yield, demonstrated by the increased photoluminescence emission intensities in P3HT films. In addition, incorporation of the PS-AgNPs decreased the series resistance and increased the photocurrent of t...