Influence of WO3-Based Antireflection Coatings on Current Density in Silicon Heterojunction Solar Cells

Abstract

Antireflection coatings (ARCs) with an indium thin oxide (ITO) layer on silicon heterojunction solar cells (SHJ) have garnered significant attention, which is due to their potential for increasing current density (Jsc) and enhancing reliability. We propose an additional tungsten trioxide (WO3) layer on the ITO/Si structure in this paper in order to raise the Jsc and demonstrate the influence on the SHJ solar cell. First, we simulate the Jsc characteristics for the proposed WO3/ITO/Si structure in order to analyze Jsc depending on the thickness of WO3 using an OPAL 2 simulator. As a result, the OPAL 2 simulation shows an increase in Jsc of 0.65 mA/cm2 after the 19 nm WO3 deposition on ITO with a doping concentration of 6.1 × 1020/cm2. We then fabricate the proposed samples and observe an improved efficiency of 0.5% with an increased Jsc of 0.75 mA/cm2 when using a 20 nm thick WO3 layer on the SHJ solar cell. The results indicate that the WO3 layer can be a candidate to improve the efficiency of SHJ solar cells with a low fabrication cost.

Facile preparation of a water-based antireflective SiO2 film with high transmittance for perovskite solar cells

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Emerging Frontiers of 2D Transition Metal Dichalcogenides in Photovoltaics Solar Cell

“…The history of solar cells can be traced back to 1954 [1] and has undergone three generations of development: from the initial silicon-based solar cells [2,3] to the second generation of inorganic thin-film solar cells (CdTe-, GaAs-, and InP-based), and then to the third generation of new concept solar cells. There are various types of solar cells available, with popular options including amorphous silicon solar cells, perovskite solar cells, and dye-sensitized solar cells (DSSC).…”