Effect of silver nanoparticle in the PEDOT: PSS counter electrode of dye sensitized solar cell

Aiswarya Anil, Sreedha Sambhudevan, C. O. Sreekala, B. Shankar
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引用次数: 1

Abstract

In this study, a conducting polymer PEDOT: PSS counter electrode is introduced in a typical DSSC (Dye Sensitized Solar Cell) with N719 dye adsorbed TiO2 nanoparticle coated FTO (Flourine doped Tin Oxide) glass as photo anode and an iodide-triiodide system as electrolyte. Counter electrode modification is done by introducing silver nano particles (NPs) along with PEDOT:PSS to heighten the performance of DSSCs. Five unlike counter electrodes are made by PEDOT: PSS, PEDOT:PSS+ 25wt% Ag np, PEDOT:PSS+ 50wt% Ag np, PEDOT:PSS+ 75wt% Ag np, PEDOT:PSS+ 100wt% Ag nanoparticles respectively,DSSCs are fabricated, photovoltaic parameters are measured and related with the standard platinum counter electrode. Themorphology of the counter electrodes is studied by FESEM analysis. The thickness of different photo cathodes is studied by ellipsometry. It is found that as the weight% of Silver nanoparticle is increasing the efficiency of the device is also increasing. The photovoltaic conversion efficiency of the device with PEDOT:PSS+75wt%Agnp is giving 3.75% efficiency. But for PEDOT: PSS+ 100wt% Agnp, the efficiency decreases to 3.05%. This is because as the weight percentage of silver nanoparticle increases, due to its metallic nature, it acts as a hole trapping material than the hole conducting material.In this study, a conducting polymer PEDOT: PSS counter electrode is introduced in a typical DSSC (Dye Sensitized Solar Cell) with N719 dye adsorbed TiO2 nanoparticle coated FTO (Flourine doped Tin Oxide) glass as photo anode and an iodide-triiodide system as electrolyte. Counter electrode modification is done by introducing silver nano particles (NPs) along with PEDOT:PSS to heighten the performance of DSSCs. Five unlike counter electrodes are made by PEDOT: PSS, PEDOT:PSS+ 25wt% Ag np, PEDOT:PSS+ 50wt% Ag np, PEDOT:PSS+ 75wt% Ag np, PEDOT:PSS+ 100wt% Ag nanoparticles respectively,DSSCs are fabricated, photovoltaic parameters are measured and related with the standard platinum counter electrode. Themorphology of the counter electrodes is studied by FESEM analysis. The thickness of different photo cathodes is studied by ellipsometry. It is found that as the weight% of Silver nanoparticle is increasing the efficiency of the device is also increasing. The photovoltaic conversion efficiency of the device with...
纳米银在染料敏化太阳能电池PEDOT: PSS对电极中的作用
本研究将导电聚合物PEDOT: PSS对电极引入到典型的DSSC(染料敏化太阳能电池)中,以N719染料吸附TiO2纳米颗粒包覆FTO(氟掺杂氧化锡)玻璃为光阳极,碘化-三碘化体系为电解质。通过引入银纳米粒子(NPs)和PEDOT:PSS对电极进行修饰,以提高DSSCs的性能。分别用PEDOT:PSS、PEDOT:PSS+ 25wt% Ag np、PEDOT:PSS+ 50wt% Ag np、PEDOT:PSS+ 75wt% Ag np、PEDOT:PSS+ 100wt% Ag纳米粒子制备了5种不同的对电极,制备了DSSCs,测量了光伏参数,并与标准铂对电极进行了对比。用FESEM分析研究了对电极的形貌。用椭偏仪研究了不同光电阴极的厚度。研究发现,随着银纳米颗粒重量的增加,器件的效率也随之提高。PEDOT:PSS+75wt%Agnp器件的光伏转换效率为3.75%。但对于PEDOT: PSS+ 100wt% Agnp,效率下降到3.05%。这是因为随着银纳米颗粒重量百分比的增加,由于其金属性质,它作为空穴捕获材料而不是空穴导电材料。本研究将导电聚合物PEDOT: PSS对电极引入到典型的DSSC(染料敏化太阳能电池)中,以N719染料吸附TiO2纳米颗粒包覆FTO(氟掺杂氧化锡)玻璃为光阳极,碘化-三碘化体系为电解质。通过引入银纳米粒子(NPs)和PEDOT:PSS对电极进行修饰,以提高DSSCs的性能。分别用PEDOT:PSS、PEDOT:PSS+ 25wt% Ag np、PEDOT:PSS+ 50wt% Ag np、PEDOT:PSS+ 75wt% Ag np、PEDOT:PSS+ 100wt% Ag纳米粒子制备了5种不同的对电极,制备了DSSCs,测量了光伏参数,并与标准铂对电极进行了对比。用FESEM分析研究了对电极的形貌。用椭偏仪研究了不同光电阴极的厚度。研究发现,随着银纳米颗粒重量的增加,器件的效率也随之提高。器件的光电转换效率…
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