Table 2.

Temperature dependence of FWHM of E_2g^high peak and G peak are fitted by Γ_ph = Γ_ph⁰ + ct, and the constants of Γ_ph⁰ and c are given in the table

Flake	Phonon	Thickness	Γ ph 0	c
h-BNs	E2ghigh	16.2 nm	13.62 cm− 1	4.707 × 10−4 cm−1 °C
	E2ghigh	36.2 nm	13.69 cm− 1	1.727 × 10−3 cm−1 °C
Graphenes	G	16.5 nm	8.061 cm− 1	2.533 × 10− 3 cm−1 °C
	G	35.6 nm	8.874 cm−1	3.604 × 10− 3 cm−1 °C