. 2026 Aug 3;16(39):44403–44415. doi: 10.1039/d6ra02163h

Table 2. List of popular ultra-wide bandgap (E_g) semiconductors for comparison with that of the Rb₂SnCl₆ structure.

Material	E _g (eV)	Material	E _g (eV)	Material	E _g (eV)
AlGaN/AlN	3.4 to 6.0 (ref. 22)	β-Ga₂O₃	4.9 (ref. 22)	Diamond	5.5 (ref. 22)
BaZrO₃	4.90 (ref. 3)	Ba₂CaTeO₆	5.24 (ref. 3)	Ba₂K₂Te₂O₉	4.65 (ref. 3)
Cs₂SnCl₆	4.50 (ref. 14)	Al₂O₃	>7.0 (ref. 68)	Rb₂SnCl₆	4.41 (this work)

Table 2. List of popular ultra-wide bandgap (Eg) semiconductors for comparison with that of the Rb2SnCl6 structure.