Double-Sided Symmetrical and Crossed Emitter Crystalline Silicon Solar Cells With Heterojunctions for Bifacial Applications

作者：Lin, Jyi-Tsong^*; Lee, Chung-Tse; Chen, Wen-Hao; Haga, Steve W.; Hu, Yu-Yan; Ho, Kon-Yu

来源：IEEE Journal of Photovoltaics, 2018, 8(2): 441-447.

DOI：10.1109/JPHOTOV.2018.2790798

• Bifacial
• heterojunction with intrinsic thin-layer (HIT)
• interdigitated back contact (IBC)
• solar cell

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 47.42 mA/cm(2) short-circuit current (J(sc)) and a 29.72% conversion efficiency (eta), due to the double-sided emitter's large area. These Jsc and. 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].

• 出版日期2018-3
• 单位中山大学