Chinese scientists set world record with 28.04% efficient tandem solar cell
A team of Chinese scientists at the Institute of Chemistry, Chinese Academy of Sciences (CAS) achieved a certified steady-state power conversion efficiency of 28.04% for a perovskite-organic tandem solar cell, setting a new world record for this class of cell. The study, led by Li Yongfang and Meng Lei, was published in the journal Nature. The tandem design stacks two light-absorbing layers to capture a broader solar spectrum, marking a step toward practical, higher-efficiency solar power.
Key Facts & Details
7 points- 1Chinese scientists set a world record for perovskite-organic tandem solar cell efficiency.
- 2The cell achieved a certified 28.04% steady-state power conversion efficiency.
- 3The work was done at the Institute of Chemistry, Chinese Academy of Sciences (CAS).
- 4The study was published in the journal Nature.
- 5A tandem cell stacks two absorber layers to harvest more of the solar spectrum.
Deep Dive
- +Perovskite-based tandem cells are a leading route to exceed the efficiency limits of conventional silicon cells.
- +The record was achieved using a 'full-stage regulation' strategy with a photo-transformable additive.
Exam Focus
Which country's scientists set a world record of 28.04% efficiency for a tandem solar cell in July 2026?
Related Topics
Exam Relevance & Angle
Global world-record science feats (technology + figure + country) are exam-relevant even without an India angle.
Target Exams
Background & Context
Tandem solar cells combine complementary absorber materials to push conversion efficiency beyond single-junction limits.
Test Yourself
1 / 1In July 2026, a world-record 28.04% efficiency was reported for which technology?
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