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<p>Interface engineering is pivotal in mitigating Shockley–Read–Hall (SRH) recombination losses in perovskite tandem solar cells (TSCs). These losses, occurring at multiple interfaces within all-perovskite tandem solar cells, significantly limit their performance, nearing the Shockley-Queisser limit. To address this issue, various methods have been employed, including the use of different hole and electron selective contacts to minimize SRH recombination. However, it remains challenging to find a single hole-selective contact that is compatible with both wide and low bandgap perovskite, hindering the development of state-of-the-art TSCs. To overcome this obstacle, we have attempted to utilize a new hole-selective contact of 4-(7-(4-bis(4-methylphenyl) amino)-2, 5-difluorophenyl) benzol [c] [1,2,5] thiadiazol-4-yl) benzoic acid, simultaneously with wide &amp; low bandgap perovskite in two-terminal (2-T) TSCs to achieve a considerable PCE of ~ 30% via SCAPS-1D simulation. A triple cation wide-bandgap perovskite i.e., Cs<sub>0.25</sub>(MA<sub>0.17</sub>FA<sub>0.83</sub>)<sub>0.75</sub>Pb(I<sub>0.78</sub>Br<sub>0.22</sub>)<sub>3</sub> and a low bandgap perovskite, Cs<sub>0.025</sub>(MA<sub>0.2</sub>FA<sub>0.8</sub>)<sub>0.975</sub>Sn<sub>0.5</sub>Pb<sub>0.5</sub>I<sub>3</sub>, are used as absorber layers in the top and bottom sub-cells respectively, in all-perovskite TSCs. The simulation results presented in this work give a new insight to fabricate a highly efficient all-perovskite 2-T TSCs of ~ 30%.</p>

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Unlocking all-perovskite tandem solar cells to ~ 30% efficiency: a simulation and optimization approach with MPA2FPh-BT-BA as a hole selective contact

  • 期刊论文

  • 发表日期：

    2025年1月19日

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  • Ajeet Kumar Singh,
  • Sumaiya Parveen,
  • Madan Singh Chauhan,
  • Shiv Poojan Patel,
  • Dhirendra Kumar Chaudhary,
  • Prem Prakash Singh,
  • Ravi S. Singh,
  • Vineet Kumar Singh

摘要

Interface engineering is pivotal in mitigating Shockley–Read–Hall (SRH) recombination losses in perovskite tandem solar cells (TSCs). These losses, occurring at multiple interfaces within all-perovskite tandem solar cells, significantly limit their performance, nearing the Shockley-Queisser limit. To address this issue, various methods have been employed, including the use of different hole and electron selective contacts to minimize SRH recombination. However, it remains challenging to find a single hole-selective contact that is compatible with both wide and low bandgap perovskite, hindering the development of state-of-the-art TSCs. To overcome this obstacle, we have attempted to utilize a new hole-selective contact of 4-(7-(4-bis(4-methylphenyl) amino)-2, 5-difluorophenyl) benzol [c] [1,2,5] thiadiazol-4-yl) benzoic acid, simultaneously with wide & low bandgap perovskite in two-terminal (2-T) TSCs to achieve a considerable PCE of ~ 30% via SCAPS-1D simulation. A triple cation wide-bandgap perovskite i.e., Cs0.25(MA0.17FA0.83)0.75Pb(I0.78Br0.22)3 and a low bandgap perovskite, Cs0.025(MA0.2FA0.8)0.975Sn0.5Pb0.5I3, are used as absorber layers in the top and bottom sub-cells respectively, in all-perovskite TSCs. The simulation results presented in this work give a new insight to fabricate a highly efficient all-perovskite 2-T TSCs of ~ 30%.