ICFO Scientists Break 33.7% Solar Efficiency Limit, Targeting 43% Cells
Updated
Updated · Boy Genius Report · Oct 30
ICFO Scientists Break 33.7% Solar Efficiency Limit, Targeting 43% Cells
3 articles · Updated · Boy Genius Report · Oct 30
Summary
ICFO researchers in Barcelona say they have surpassed the long-standing 33.7% Shockley-Queisser efficiency ceiling for single-junction solar cells and outlined a path toward nearly 43% efficiency.
The team achieved that by turning the cell into an optical cavity that still admits sunlight but restricts photon emissions, reducing energy lost as light escapes after absorption.
Francisco Bernal Texca said the cavity-cell design adds no extra fabrication complexity compared with many other approaches aimed at beating the theoretical limit.
Most commercial panels still deliver under 25% efficiency, and the new method remains experimental, leaving a wide gap between lab potential and rooftop deployment.
If scaled, higher-efficiency cells could cut cost per watt and reduce land and material needs for solar power, according to ICFO professor Jordi Martorell.