Table 1.

Detailed parameters of black phosphorus including lattice constant, interlayer distance, bond length, and density

Parameters	Values	Description	References
a	0.45 nm	Orthorhombic lattice constant	[37–40]
b	0.34 nm	Orthorhombic lattice constant	[37–40]
c	1.12 nm	Orthorhombic lattice constant	[37–40]
d1	0.53 nm	Maximum interlayer spacing	[41, 43]
d2	0.308 nm	Channel interlayer spacing	[41, 43]
d3	0.116 nm	Cross-channel interlayer spacing	[41, 43]
b1	0.2244 nm	Bond length in the same plane within one layer	[44]
b2	0.2244 nm	Bond length between adjacent plane within one layer	[44]
ρ	2.69 g cm−3	Single layer density	[47]