"Stacking light-generating layers in 'tandem' light-emitting diodes (LEDs) can enhance performance, but achieving efficient and stable tandem LEDs made with perovskite materials has remained a challenge."
"A tandem perovskite-based device that seems to benefit from 'recycling' of photons between stacked layers demonstrates highly efficient performance, surpassing the combined emissions of two single-unit devices."
Tandem devices stack multiple light-emitting layers to increase output and device efficiency. Perovskite materials offer strong emission but have posed challenges for efficient, stable tandem LED fabrication. A tandem perovskite device achieves superior performance by recycling photons between stacked layers, enabling reabsorption and additional emission that boosts overall light output. The tandem device's emission surpasses the combined emissions of two equivalent single-unit devices, indicating synergistic gains from the stacked architecture. Photon recycling and optimized layer interactions contribute to the improved external emission without simply summing individual unit outputs.
Read at Nature
Unable to calculate read time
Collection
[
|
...
]