Vacuum Processability of Self-Assembled Monolayers and Their Chemical Interaction with Perovskite Interfaces DOI Creative Commons
Hyeji Han, Siwon Yun, Zobia Irshad

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(7), P. 1782 - 1782

Published: April 2, 2025

Self-assembled monolayers (SAMs) have gained significant attention as an interfacial engineering strategy for perovskite solar cells (PSCs) due to their efficient charge transport ability and work function tunability. While solution-based methods such dip-coating spin-coating are widely used SAM deposition, challenges non-uniform coverage, solvent contamination, limited control over molecular orientation hinder scalability reproducibility. In contrast, vacuum deposition techniques, including thermal evaporation, overcome these limitations by enabling the formation of highly uniform materials with precise thickness arrangement. Importantly, chemical interactions between layers, coordination bonding Pb2+ ions, play important role in passivating surface defects, modulating energy levels, promoting crystallization. These not only enhance wettability but also improve overall quality stability films. This review highlights advantages vacuum-deposited SAMs, strong layers improving properties critical scalable applications.

Language: Английский

LiOH Additive Triggering Beneficial Aging Effect of SnO2 Nanocrystal Colloids for Efficient Wide-Bandgap Perovskite Solar Cells DOI
Yuanbo Zhou, Jie Chen, Weidong Zhu

et al.

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

Published: Jan. 14, 2025

Commercial SnO2 nanocrystals used for producing electron transporting layers (ETLs) of perovskite solar cells (PSC) are prone to aggregation at room temperature and contain many structural defects. Herein, we report that the LiOH additive can simultaneously delay donate beneficial aging effect nanocrystals. The resulting ETLs show desired characteristics, including a broadened absorption range, reduced defects, improved properties, decreased work function. Meanwhile, Cs0.15FA0.65MA0.20Pb(I0.80Br0.20)3 films with wide bandgap 1.68 eV grown on them exhibit pure phase, higher crystallinity, fewer better buried-interface contact, more aligned energy levels each other than ones based without treatment. Hence, average efficiencies boosted from (18.79 ± 0.40)% (20.16 0.36)% wide-bandgap PSCs, wherein champion efficiency 21.12% is achieved. In addition, as-obtained PSCs possess good thermal humidity stability.

Language: Английский

Citations

1
Enhancing Stability in 1.78 eV Wide-Bandgap Inverted Perovskite Solar Cells via GlyHCl-Induced Inhibition of Phase Segregation DOI
Xinyu Zhao, Weisheng Li,

Xuefei Jia

et al.

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112294 - 112294

Published: March 1, 2025

Language: Английский

Citations

0
Vacuum Processability of Self-Assembled Monolayers and Their Chemical Interaction with Perovskite Interfaces DOI Creative Commons
Hyeji Han, Siwon Yun, Zobia Irshad

et al.

Energies, Journal Year: 2025, Volume and Issue: 18(7), P. 1782 - 1782

Published: April 2, 2025

Self-assembled monolayers (SAMs) have gained significant attention as an interfacial engineering strategy for perovskite solar cells (PSCs) due to their efficient charge transport ability and work function tunability. While solution-based methods such dip-coating spin-coating are widely used SAM deposition, challenges non-uniform coverage, solvent contamination, limited control over molecular orientation hinder scalability reproducibility. In contrast, vacuum deposition techniques, including thermal evaporation, overcome these limitations by enabling the formation of highly uniform materials with precise thickness arrangement. Importantly, chemical interactions between layers, coordination bonding Pb2+ ions, play important role in passivating surface defects, modulating energy levels, promoting crystallization. These not only enhance wettability but also improve overall quality stability films. This review highlights advantages vacuum-deposited SAMs, strong layers improving properties critical scalable applications.

Language: Английский

Citations

0