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<p>Planar perovskite solar cells (PSCs) are confronted with issues such as inefficient light perovskite solar cells (PSCs) are confronted with issues such as inefficient light absorption, interfacial energy losses, and instability due to interfacial defects. In this study, the texturing of MgF<sub>2</sub> has been done on the double perovskite layer (made up of BDAMA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub> and PeDAMA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub>). By utilizing double perovskite with texturing of MgF<sub>2</sub>, optical losses are reduced and absorption of light spectrum is also increased. After the textured surface, 2D material is interacted over the ETL and HTL layer and optimized by varying cumulatively thickness and bulk defect density of the double perovskite absorber layer. Further, 3D material is also utilized and considered for the necessary optimization of the complete device. The current-voltage (J-V) characteristics, energy band structure, photogeneration, recombination rates, and external quantum efficiency of the optimized device have been studied. The champion PCE (27.54%) has been found at 0.005&#xa0;μm (front) and 0.01&#xa0;μm (back) thick 2D perovskite and the BDD of the 2D perovskite is found 1 × 10<sup>12</sup> cm<sup>− 3</sup>. Further, the optimized device delivered short-circuit current (J<sub>SC</sub>) of 30.6&#xa0;mA/cm², an open-circuit voltage (V<sub>OC</sub>) of 1.2&#xa0;V, and a fill factor (FF) of 75%. This consists of a These findings show the promise of this method for achieving highly efficient and stable perovskite solar cells.</p>

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Tackling interface defects and optical losses in perovskite solar cells using 2D perovskites and MgF2 texturing to achieve 27% efficiency

  • 期刊论文

  • 发表日期：

    2026年5月29日

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  • Vishal Yadav,
  • Nikhil Shrivastav,
  • Rahul Pandey,
  • Jaya Madan

摘要

Planar perovskite solar cells (PSCs) are confronted with issues such as inefficient light perovskite solar cells (PSCs) are confronted with issues such as inefficient light absorption, interfacial energy losses, and instability due to interfacial defects. In this study, the texturing of MgF2 has been done on the double perovskite layer (made up of BDAMA4Pb5I16 and PeDAMA4Pb5I16). By utilizing double perovskite with texturing of MgF2, optical losses are reduced and absorption of light spectrum is also increased. After the textured surface, 2D material is interacted over the ETL and HTL layer and optimized by varying cumulatively thickness and bulk defect density of the double perovskite absorber layer. Further, 3D material is also utilized and considered for the necessary optimization of the complete device. The current-voltage (J-V) characteristics, energy band structure, photogeneration, recombination rates, and external quantum efficiency of the optimized device have been studied. The champion PCE (27.54%) has been found at 0.005 μm (front) and 0.01 μm (back) thick 2D perovskite and the BDD of the 2D perovskite is found 1 × 1012 cm− 3. Further, the optimized device delivered short-circuit current (JSC) of 30.6 mA/cm², an open-circuit voltage (VOC) of 1.2 V, and a fill factor (FF) of 75%. This consists of a These findings show the promise of this method for achieving highly efficient and stable perovskite solar cells.