Letter to the editor of Heliyon re: Design and optimization of a high efficiency CdTe-FeSi2 based double-junction two-terminal tandem solar cell. Heliyon 10 (2024) e27994

Alexander P Kirk

doi:10.1016/j.heliyon.2024.e29288

Letter to the editor of Heliyon re: Design and optimization of a high efficiency CdTe-FeSi₂ based double-junction two-terminal tandem solar cell. Heliyon 10 (2024) e27994

Heliyon. 2024 Apr 10;10(8):e29288. doi: 10.1016/j.heliyon.2024.e29288. eCollection 2024 Apr 30.

Author

Alexander P Kirk¹

Affiliation

¹ Central R&D LLC, Schaumburg, IL 60194, USA.

Abstract

In March 2024 - based on computer simulation - it was reported that 2-junction 1.5 eV CdTe/0.87 eV FeSi₂ solar cells can achieve actual power conversion efficiency of 43.9 %, open circuit voltage of 1.928 V, and fill factor of 89.88 % at 300 K when the cells are irradiated by the air mass 1.5 global (AM1.5G) solar spectrum [M. H. Tonmoy et al., Heliyon 10 (2024) e27994]. These simulated values exceed the ideal detailed balance-limiting power conversion efficiency, open circuit voltage, and fill factor of a 1.5 eV/0.87 eV 2-junction solar cell.

Keywords: CdTe; Detailed balance limit; Efficiency; Fill factor; Open circuit voltage.