Preparation of Cu₂Sn₃S₇ Thin-Film Using a Three-Step Bake-Sulfurization-Sintering Process and Film Characterization

Table 1

Phase composition of samples sintered at various temperatures.

	(I)			(II)	(III)
	200°C	300°C	400°C	500°C	600°C	700°C
Cu2Sn3S7				○	○	○
SnO2	○	○	○	○	○	○
CuS	○	○	○		○	○
Cu4SnS4	○	○	○	○
Cu10Sn2S13	○	○	○	○	○	○