Optical trapping enhancement from high density silicon nanohole and nanowire arrays for efficient hybrid organic–inorganic solar cells

Abstract

The SiNH arrays exhibit excellent light-absorbing structures and higher optical trapping as compared to SiNW arrays, resulting in leading performance power conversion efficiency of 11.25% in the hybrid organic–inorganic solar cells.

Silicon Quasi‐One‐Dimensional Nanostructures for Photovoltaic Applications

“…A large variety of designs have been proposed, where the intrinsic layer plays the relevant role to improve the cell efficiency. One of the issues largely debated is about the efficient removal of the metallic catalyst from the SiNWs, because it is related to wafer [38].…”

“…The universal scaling-law is an exponential decay: where R 0 (λ) is the wavelength depending-reflectance of the flat reference, d is the depth of the NHs, λ is the wavelength of the incident light, and C is a constant. Such subwavelength structures can be designed in order to increase the optical absorption of materials [38]. For instance, the indirect band gap of Si is the main cause of its low absorption in the IR region, which can be thus improved by the surface texturing.…”

“…A less known method to fabricate NHs will be also described, the focused ion beam (FIB) which lets to obtain diameters below few nm [33]. After the synthesis the SiNHs, optical properties [35][36][37][38] will be presented, highlighting for the first time the pros and cons of both structures.…”

Efficient fabrication methodology of wide angle black silicon for energy harvesting applications

“…† Reection decreases with increasing surface area due to the shorter length making it a promising material for large scale PV devices. 43 Fig . 4 shows the optical properties of different level of doping SiNWs; Fig.…”

Light trapping and power conversion efficiency of P3HT : nano Si hybrid solar cells

“…The intrinsic imbalances in carrier mobility and thermal stability present in BHJ polymer solar cells are overcome through HSCs based on a combination of polymer/organic/inorganic/nanocrystal (NC) materials. [5][6][7][8] The hybrid polymers and inorganic nanostructured materials are blended to form BHJ solar cells by considering the conducting properties of both type of materials such as solution processing of polymer semiconductors and high electron mobility of inorganic semiconductors. In an HSC, the active layer is formed by the direct interfacial connection between organic materials, such as small molecules and conducting polymers, and inorganic semiconductors such as Nc Si, TiO 2 , ZnO, PbS, CdSe, and CdS, as a nanostructured bilayered conguration.…”