Large excitonic effects in an ultrawide bandgap two-dimensional semiconductor PbF4

Key Points

• Significant excitonic effects were observed in PbF4, indicating its unique properties as a semiconductor.
• The excitonic effects were characterized across a range of excitation levels, showing robust responses at varying conditions.
• Analysis of PbF4's electronic structure demonstrates its ultrawide bandgap capabilities and their implications for device applications.
• These findings highlight the potential of PbF4 as a promising semiconductor, suggesting further exploration in practical applications.