Passivated Quasi-2D Perovskite Film
PLQY 100% · 96% after 30 days
A multifunctional molecule additive simultaneously passivates perovskite cations and anions, significantly reducing defects and enhancing both PL efficiency and stability for efficient and stable luminescent solar concentrators.
Mingze, Sun · Ying, Chen · Shubing, Tian · Zhang, Mingming · Haokun, Jiang · Liu, Kang · Xu, Jixiang · Dai, Fangxu · Wang, Lei · Zhou, Zhongmin · Xing, Jun
Advanced Functional Materials 2025
Specifications
- Photoluminescence quantum yield
- {'zh': '100', 'en': '100'} %
- PL intensity retention after 30 days
- {'zh': '96', 'en': '96'} %
Advantages
Fewer defects, brighter emission
The multifunctional molecule passivates both perovskite cations and anions, reducing defect sites and enabling a photoluminescence quantum yield of 100%.
Keeps 96% brightness over 30 days
The hydrophobic long alkyl chain prevents water erosion and the bulky groups hinder ion migration; the film retains 96% of its initial PL intensity after 30 days of indoor storage.
Applications
- perovskite solar cells：The film's high PLQY and stability make it a promising emissive layer to enhance light harvesting and conversion in perovskite solar cells.
- quantum dot luminescence：Quasi-2D perovskite nanocrystals with 100% PLQY can replace conventional quantum dots as highly efficient emitters.
- flexible optoelectronics：Solution-processed and air-stable, this film is suitable for large-area emissive and concentrating devices on flexible substrates.
- optical sensors：Strong emission and large Stokes shift reduce self-absorption, improving signal-to-noise ratio in optical sensors.