# New method for high-efficiency perovskite-silicon tandem solar cells

Researchers developed a fully thermal evaporation process for perovskite/silicon tandem solar cells using a formamidinium-based eutectic mixture. This approach enables more uniform, scalable manufacturing of high-efficiency tandem devices, which could lower the cost and boost the deployment of next-generation solar power.

**Importance:** 3/5

## Sources

### Science
- [Nature](https://www.nature.com/articles/s41586-026-10970-1) — 2026-08-05