Surpassing Shockley–Queisser Efficiency Limit in Photovoltaic Cells

Abstract

Highlights A record power conversion efficiency of 50%–60% was achieved in Si solar cells by inhibiting the lattice atoms’ thermal oscillations at low temperatures. Enhancing the light penetration depth can effectively mitigate carrier freeze-out and expand the operational temperature range of silicon cells to 10 K.

Keywords

• Single-junction Si solar cells
• Power conversion efficiency
• Shockley–Queisser model
• Carrier freeze-out effect