. Author manuscript; available in PMC: 2019 Oct 23.

Published in final edited form as: ACS Nano. 2018 Sep 28;12(10):10045–10060. doi: 10.1021/acsnano.8b04620

Table 1.

Summary of the electronic transport properties obtained from our combined four-point probe and TRTS measurements on solution-synthesized colloidal nanocrystals of 2D SnS. For comparison, a summary of previously reported transport properties obtained from Hall measurements on both single-crystalline and thin films of SnS is provided. All SnS samples are undoped and results are at room temperature. See also supporting information, Table S1.

SnS Material	Conductivity (S / cm)	Mobility (cm² / V·s) [direction undefined]	Majority Carrier Concentration (cm⁻³)	Mobility (cm² / V·s) [approximated zigzag]	Mobility (cm² / V·s) [approximated armchair]
Nanoribbons, this work	0.097 (zigzag)	holes: 4.8 electrons: 22	1.04 ×10¹⁷, holes [p-type]	holes: 5.8 electrons: 29	holes: 3.9 electrons: 16
Square nanosheets, this work	0.043 (in-plane)	electrons: 130 holes: 29	2.07 ×10¹⁵, electrons [n-type]	electrons: 170 holes: 35	electrons: 97 holes: 23
Single crystals, consensus from literature	~0.01 - ~ 0.2	10 - 90	10¹³ - 10¹⁷, holes	(1.15 - 2.5 times higher μ in zigzag direction relative to armchair)
Thin films, consensus from literature	~0.001 - ~ 0.07	0.8 - 37	10¹⁴ - 10¹⁷, holes 10¹⁵, electrons	--	--