The 33 % Shockley–Queisser (S-Q) ceiling has stood as the ultimate barrier for single-junction photovoltaics since 1961. Now, Prof. Zhigang Li (Taizhou University) and Prof. Bingqing Wei (University of Delaware) report the first experimental breach: n-type monocrystalline Si cells delivering 50–60 % power-conversion efficiency at 30–50 K, effectively doubling the room-temperature record and opening a practical route to cryogenic and deep-space power.
Why Low-Temperature PV Matters
Innovative Design & Features
Applications & Future Outlook
This work rewrites the low-temperature PV playbook, turning the once-dreaded freeze-out regime into an ultra-efficiency window—pointing toward >50 % single-junction devices for extreme-environment energy harvesting. Stay tuned for vacuum-chamber and lunar-simulant tests from the Wei–Li joint lab!
Nano-Micro Letters
Experimental study
Surpassing Shockley–Queisser Efficiency Limit in Photovoltaic Cells
14-Jul-2025