Self-disintegrating seed boosts perovskite solar cell efficiency to 23.73%

• Revolutionary perovskite solar cell with record-breaking efficiency of 23.73% and impressive stability. Innovative 'self-disintegrating seed' strategy optimizes morphology and enhances performance.

Researchers from multiple institutions in China have developed a perovskite solar cell with a record-breaking efficiency of 23.73% using a 'self-disintegrating seed' strategy. This innovative approach also resulted in impressive stability and fill factor values. The team achieved this by reducing nonradiative recombination and residual stress through the self-disintegrating seed strategy, which released functional cations to optimize morphology, modify interfaces, and release stress within the perovskite film.

The self-disintegrating seed, made of 2D (4-FBZA)2PbI4, enhanced the crystallization process of the perovskite film by providing large-size nucleation centers for perovskite grains. This strategy improved carrier lifetime, promoted hole transport, and achieved commendable long-term humidity stability. The device also demonstrated a power conversion efficiency of 23.73%, an open-circuit voltage of 1.133 V, a short-circuit current density of 25.21 mA cm2, and a fill factor of 83.07%, outperforming a reference device without the self-disintegrating seed strategy.

How did researchers in China achieve record-breaking efficiency in perovskite solar cells?

• The researchers utilized a 'self-disintegrating seed' strategy, using a 2D (4-FBZA)2PbI4 seed to enhance the crystallization process of the perovskite film.
• This approach provided large-size nucleation centers for perovskite grains, improving carrier lifetime and promoting hole transport within the solar cell.
• The self-disintegrating seed strategy also optimized the morphology of the perovskite film, modifying interfaces and releasing stress to enhance overall efficiency.
• The perovskite solar cell achieved a record-breaking efficiency of 23.73%, along with an open-circuit voltage of 1.133 V, a short-circuit current density of 25.21 mA cm2, and a fill factor of 83.07%.
• The innovative strategy not only improved efficiency but also demonstrated impressive long-term humidity stability, making it a promising advancement in the field of renewable energy.