Controlling Crystal Growth via an Autonomously Longitudinal Scaffold for Planar Perovskite Solar Cells.
Xiaopeng DuanXiang LiLicheng TanZengqi HuangJia YangGengling LiuZhuojia LinYiwang ChenPublished in: Advanced materials (Deerfield Beach, Fla.) (2020)
Sequential deposition is certified as an effective technology to obtain high-performance perovskite solar cells (PVSCs), which can be derivatized into large-scale industrial production. However, dense lead iodide (PbI2 ) causes incomplete reaction and unsatisfactory solution utilization of perovskite in planar PVSCs without mesoporous titanium dioxide as a support. Here, a novel autonomously longitudinal scaffold constructed by the interspersion of in situ self-polymerized methyl methacrylate (sMMA) in PbI2 is introduced to fabricate efficient PVSCs with excellent flexural endurance and environmental adaptability. By this strategy perovskite solution can be confined within an organic scaffold with vertical crystal growth promoted, effectively inhibiting exciton accumulation and recombination at grain boundaries. Additionally, sMMA cross-linked perovskite network can release mechanical stress and occupy the main channels for ion migration and water/oxygen permeation to significantly improve operational stability, which opens up a new strategy for the commercial development of large-area PVSCs in flexible electronics.
Keyphrases
- perovskite solar cells
- room temperature
- solid state
- high efficiency
- tissue engineering
- solar cells
- wastewater treatment
- cross sectional
- heavy metals
- signaling pathway
- dna damage
- risk assessment
- human health
- resistance training
- oxidative stress
- stress induced
- body composition
- heat stress
- highly efficient
- metal organic framework