Abstract
In this paper, we propose symmetrical and crossed bifacial crystalline silicon solar cells with heterojunctions employing a double-sided emitter, for use in environments with ambient light. We perform real measurement-based simulation analysis by using Silvaco TCAD Atlas. At an albedo level of 30%, our symmetrically structured solar cell achieves a $\text{47.42}\,{\text{ mA/cm}}^{\text{2}}$ short-circuit current ( J sc) and a 29.72% conversion efficiency ( η ), due to the double-sided emitter's large area. These J sc and η values are, respectively, 14.2% and 16.1% better than for a conventional Interdigitated Back Contact (IBC) [1] . The crossed structure obtains an 84.34% fill factor (FF) and a 29.81% conversion efficiency, due to its surrounding electric field. Conversion efficiency is increased by 16.4% compared with a conventional IBC solar cell [1] . Also, conversion efficiencies for the symmetrical and crossed bifacial SHJs are increased by 11.60% and 11.94%, respectively, compared with the state-of-the-art IBC solar cells [2] .
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