← No. 024 FRI 23 OCT 2026

A bendable two-layer solar cell converts about one-third of light.

perovskite–silicon tandem

Published online on Nov 10, 2025, a team reported a lab‑certified, flexible two‑layer solar cell that converts 33.6% of sunlight. It kept 91% of its output after 5,000 bends around a 17.6‑mm radius, held about 90% after 1,000 hours of damp‑heat, and lasted more than 2,000 hours under steady light. It shows high efficiency and toughness in the same thin, bendable device.

Why it’s interesting

Fig. 024 Two stacked ribbons bend around a central ring; the black arc spans about one‑third of the circle to encode the certified 33.6% efficiency.

Why it’s interesting

Flexible used to mean fragile or low efficiency. This device shows a thin, curved cell can reach top‑tier conversion while surviving thousands of bends and harsh lab tests.

The longer version

Stacking two light‑absorbing layers lets a solar cell catch different colors more efficiently. In November 2025, researchers reported a flexible perovskite‑on‑silicon tandem with a certified efficiency of 33.6%.

They checked durability as well as output: after 5,000 bends around a 17.6‑mm radius, it kept 91% of its initial performance; after 1,000 hours in damp‑heat it held about 90%; under continuous illumination its T80 lifetime exceeded 2,000 hours. These results were reported in a peer‑reviewed paper published online on Nov 10, 2025.

Edition: No. 024
Date: Friday 23 October 2026
Subject: perovskite–silicon tandem
Period: November 10, 2025
Field: technology
Evidence: 3 sources, 1 primary

See how we got here

Found after 21 research paths · Selected from 6 candidates

01 Solar cells Sunlight turned into electricity.
02 Tandem stacks Two layers split the spectrum.
03 Perovskite–silicon A high‑efficiency pairing in labs.
04 Flexible substrates Cells that bend without cracking.
05 Reliability tests Bends, damp‑heat, steady light.
06 33.6% flexible tandem Certified result published 2025‑11‑10.
→ A bendable two-layer solar cell converts about one-third of light.

Sources

Nothing publishes without independent sources. How we verify →

1
Flexible perovskite/silicon tandem solar cells with 33.6% efficiency
PubMed (NIH/NLM) · 2025 · government Primary

All key numerical claims (33.6% certified; 91% after 5,000 bends at 17.6 mm; ~90% after 1,000 h damp‑heat; T80 >2,000 h; Epub date 2025‑11‑10).

pubmed.ncbi.nlm.nih.gov
2
Chinese researchers achieve milestone breakthrough in flexible solar cells
Arab Times (Xinhua reprint) · 2026 · journalism

Independent news report citing the Nature study and stating a certified 33.6% efficiency on an ultrathin 60‑µm silicon substrate.

arabtimesonline.com
3
Flexible perovskite/silicon tandem solar cells with 33.6% efficiency
Nature Index · 2025 · reference

Confirms article title and online publication date (2025‑11‑10).

nature.com

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