Wide bandgap Cu-Zn-Sn-S compound thin films for transparent semiconductors

Figures & data

Table 1. Weight and molar percentage of the chemicals used.

ratio	Cu(CH3COO)2	Zn(ac)2⋅2H2O	SnCl2⋅2H2O	CH4N2S
Weight	1.3	0.5	0.6	1.5
Molar	1.5	0.5	0.5	4

Table 2. pH and viscosity of samples a, b, and c.

Sample	pH	Viscosity (mPa  s)
a	7.212	2.3
b	7.613	2.5
c	7.012	2.4

Figure 1. SEM images of samples a, b, and c.

Table 3. Atomic and weight percentage of sample a using EDX measurements.

Element	Atomic %	Weight %
Cu	13.18	18.99
Zn	7.02	10.4
Sn	6.42	17.27
S	73.38	53.34

Table 4. Atomic and weight percentage of sample a using EDX measurements.

Element	Atomic %	Weight %
Cu	18.42	24.77
Zn	11.52	15.94
Sn	6.39	16.07
S	63.67	43.62

Table 5. Atomic and weight percentage of sample a using EDX measurements.

Element	Atomic %	Weight %
Cu	11.78	18.29
Zn	3.78	6.04
Sn	4.48	13.01
S	79.96	62.66

Figure 2. Spectroscopic transmittance of samples a, b, and c.

Figure 3. Spectroscopic reflectance of samples a, b, and c.

Figure 4. Extinction coefficient k (a) and refractive index versus wavelength (b) for samples a, b, and c.

Figure 5. Figure of merit as a function of wavelength for samples a, b, and c.

Figure 6. Current–voltage curves for samples a, b, and c.