Cosolvent Strategy in Blade-Coating Phenethylammonium Iodide Passivation Layers for Perovskite Solar Cells DOI

Wanqi Luo,

J. Liu, Xiaoran Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Perovskite solar cells (PSCs) often suffer from defects due to rapid crystallization in solution-based fabrication. Surface passivation using phenethylammonium iodide (PEAI) can mitigate these defects, but traditional spin-coating methods limit their scalability. Blade-coating offers a cost-effective alternative, yet blade-coating PEAI layers isopropanol (IPA) based solution face the challenge of uneven coverage and perovskite degradation. Here, we introduce dibutyl alcohol (TBA) as cosolvent enhance viscosity solution, forming stable liquid column during blade-coating. This improves uniformity reduces level IPA-induced corrosion. As result, PSC efficiency increased 21.6% 23.0%, with an improved open circuit voltage 1.14 1.17 V. The films also exhibited excellent moisture stability, maintaining performance for 3000 h at 24 °C 50-60% RH. study presents scalable, sustainable strategy large-area films, advancing industrial viability PSCs.

Language: Английский

Surface Modification with Diaza-Crown Ether for High-Efficiency and Stable Inverted Perovskite Solar Cells DOI

B.Y. Li,

Haixia Mao,

Yingjie Xing

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 27, 2025

The presence of positively charged cationic defects and residual PbI2 on the perovskite surface has hindered improvement device performance long-term stability. Herein, 4,10-diaza-15-crown 5-ether (DA15C5), a diaza-crown ether featuring multiple N atom O donors, is developed to modify surface. Owing strong chemical interactions between DA15C5 both Pb2+ A-site cations, films are effectively passivated, thereby suppressing nonradiative recombination promoting charge transport at cathode interface. Furthermore, treatment promotes formation two-dimensional (2D) phase by reacting with PbI2, which optimizes energy-level alignment enhances film Consequently, open-circuit voltage (VOC) fill factor (FF) solar cells (PSCs) improved significantly, achieving an impressive power conversion efficiency (PCE) 24.75%. Moreover, environmental thermal stabilities DA15C5-treated PSCs markedly enhanced. unencapsulated retains over 80% initial PCE after heating 1400 h 85 °C in N2 atmosphere maintains 78% 550 air 40 ± 10% relative humidity (RH). This study proposes as molecular modulator achieve efficient stable PSCs.

Language: Английский

Citations

0
Cosolvent Strategy in Blade-Coating Phenethylammonium Iodide Passivation Layers for Perovskite Solar Cells DOI

Wanqi Luo,

J. Liu, Xiaoran Sun

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: May 12, 2025

Perovskite solar cells (PSCs) often suffer from defects due to rapid crystallization in solution-based fabrication. Surface passivation using phenethylammonium iodide (PEAI) can mitigate these defects, but traditional spin-coating methods limit their scalability. Blade-coating offers a cost-effective alternative, yet blade-coating PEAI layers isopropanol (IPA) based solution face the challenge of uneven coverage and perovskite degradation. Here, we introduce dibutyl alcohol (TBA) as cosolvent enhance viscosity solution, forming stable liquid column during blade-coating. This improves uniformity reduces level IPA-induced corrosion. As result, PSC efficiency increased 21.6% 23.0%, with an improved open circuit voltage 1.14 1.17 V. The films also exhibited excellent moisture stability, maintaining performance for 3000 h at 24 °C 50-60% RH. study presents scalable, sustainable strategy large-area films, advancing industrial viability PSCs.

Language: Английский

Citations

0