# Researchers demonstrate perovskite films with certified 25.9% solar efficiency

_Published Sunday, November 8, 2026 at 6:06 PM EST · Science · Latest · Tier 2 — Notable_

![Researchers demonstrate perovskite films with certified 25.9% solar efficiency — Primary](https://scx2.b-cdn.net/gfx/news/2026/skku-develops-ultra-lo-1.jpg)

Researchers led by Sungkyunkwan University demonstrated perovskite solar cells with certified power conversion efficiency of 25.9% using a crystal-growth process that reduces defects. Their study, published in Science, also demonstrated an LED with external quantum efficiency of 26.1% using the same device architecture.

Heating a mixture of methylammonium chloride and a zinc halide to around 100°C creates a liquid layer at crystal boundaries, helping small grains merge. The chloride subsequently evaporates, while remaining zinc helps suppress defects. The films reached a charge-carrier lifetime of approximately 295 μs. The results demonstrate device performance in research, with the researchers describing commercialization as a future application.

## Sources

- [Phys.org](https://phys.org/news/2026-11-liquid-crystal-growth-perovskite-defects.html)

---
Canonical: https://techandbusiness.org/newswire/92_cF3KEhbCKfpp6AzfSJy
Published: 2026-11-08T23:06:26.196Z
Story chronology: 2026-11-08T22:00:01.000Z
Retrieved: 2026-11-09T01:02:26.291Z
Publisher: Tech & Business (techandbusiness.org)