Table 2.

Summary of “endpoint” lattice thermal conductivity data from various authors and the ε parameter used to produce a best fit for each author's data [8, 9, 12, 107].

Reference	Lattice thermal conductivity (W/mK)			Best fit ε parameter for chalcogen sublattice
	Bi2Te3	Bi2Te2Se	Bi2Se3	Te/Se(1)	Te/Se(2)
Birkholz [8]	1.65	1.26	2.39	7.7	75.2
Rosi et al. [9]	1.30	1.24	2.00	0	72.8
Goldsmid [12]	1.54	1.23			82.7
Champness et al. [16]	1.77	1.35	1.74	13.7	169.3
Average	1.56	1.27	2.04	7.1	100.0