Abstract
Silicon nanowire (SiNW) arrays show an excellent light-trapping characteristic and high mobility for carriers. Surface plasmon resonance of silver nanoparticles (AgNPs) can be used to increase light scattering and absorption in solar cells. We fabricated a new kind of SiNW/organic hybrid solar cell by introducing AgNPs. Reflection spectra confirm the improved light scattering of AgNP-decorated SiNW arrays. A double-junction tandem structure was designed to manufacture our hybrid cells. Both short-circuit current and external quantum efficiency measurements show an enhancement in optical absorption of organic layer, especially at lower wavelengths.
Highlights
Organic solar cells have emerged as potential energy conversion devices for several advantages, including flexibility, lightweight, semi-transparent characteristics, and ability to large-scale production at low temperature [1,2,3]
We report an efficient approach for enhancing the power conversion efficiency (PCE) of Silicon nanowire (SiNW)/poly(3-hexylthiophene) (P3HT):[6]-phenyl-C61-butyric acid methyl ester (PCBM) hybrid solar cells by decorating AgNPs on the SiNW surface
Electrons generated in the SiNWs will be collected at the Al electrode
Summary
Organic solar cells have emerged as potential energy conversion devices for several advantages, including flexibility, lightweight, semi-transparent characteristics, and ability to large-scale production at low temperature [1,2,3]. The most crucial problems many of these devices face are limited mobility of charge carriers and rapid recombination To mitigate these problems, some special methods, such as reducing the thickness of the active layer of solar cell and incorporating inorganic materials with high carrier mobility, have been taken for effective charge separation [4,5,6]. Some special methods, such as reducing the thickness of the active layer of solar cell and incorporating inorganic materials with high carrier mobility, have been taken for effective charge separation [4,5,6] One of these inorganic materials is silicon nanowires (SiNWs) [7,8,9]. They can significantly reduce reflection and induce strong light trapping between
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