Thermal Stress Mitigation and Improved Performance in Perovskite Solar Cells via Lattice Matched Alkali Halide Passivation DOI
Abhijit Singha, Ananta Paul, Nrita Gaur

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract This study utilizes a method to enhance the structural and thermal stability of perovskite solar cells (PSCs) by incorporating an alkali halide interlayer between electron transport layer (ETL) perovskite, which is known improve device efficiency. passivation technique significantly reduces residual stress within at room temperature (3.68 MPa → 2.56 MPa) maintains integrity under cycling (−40 85 °C) as per IEC 61215: 2016 standards. Following 50 cycles, treated film exhibits minimal increase in (≈5.34 MPa), contrast control (≈29.72 based on Williamson‐Hall 2θ – Sin 2 Ψ analysis. The incorporation wide‐bandgap halides facilitates strong lattice registry, thereby enhancing reliability. Moreover, fluorescence lifetime imaging microscopy (FLIM) confirms reduction defect formation, correlating with macroscopic studies. also increases open circuit voltage ( V OC ) (1.08 1.15 V) efficiency (17.9% 20.6%). Notably, retains ≈71% its initial PCE after whereas devices ceased operation 30 cycles due stress‐induced interfacial delamination. approach effectively prevents delamination, improving long‐term reliability and, thereby, enabling efficient thermally stable PSC deployment.

Language: Английский

Thermal Stress Mitigation and Improved Performance in Perovskite Solar Cells via Lattice Matched Alkali Halide Passivation DOI
Abhijit Singha, Ananta Paul, Nrita Gaur

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Abstract This study utilizes a method to enhance the structural and thermal stability of perovskite solar cells (PSCs) by incorporating an alkali halide interlayer between electron transport layer (ETL) perovskite, which is known improve device efficiency. passivation technique significantly reduces residual stress within at room temperature (3.68 MPa → 2.56 MPa) maintains integrity under cycling (−40 85 °C) as per IEC 61215: 2016 standards. Following 50 cycles, treated film exhibits minimal increase in (≈5.34 MPa), contrast control (≈29.72 based on Williamson‐Hall 2θ – Sin 2 Ψ analysis. The incorporation wide‐bandgap halides facilitates strong lattice registry, thereby enhancing reliability. Moreover, fluorescence lifetime imaging microscopy (FLIM) confirms reduction defect formation, correlating with macroscopic studies. also increases open circuit voltage ( V OC ) (1.08 1.15 V) efficiency (17.9% 20.6%). Notably, retains ≈71% its initial PCE after whereas devices ceased operation 30 cycles due stress‐induced interfacial delamination. approach effectively prevents delamination, improving long‐term reliability and, thereby, enabling efficient thermally stable PSC deployment.

Language: Английский

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