Improved Indium-Free Transparent ZnO/Metal/ZnO Electrode through a Statistical Experimental Design Method

Table 2

Experimental results and ratios for the resistance (Ω/sq) and the transmittance (%) at the wavelength of 550 nm for ZAZ stacked layers (Taguchi orthogonal array table of ()).

Exp. number	(W)	(nm)	(°C)	Error	Resistance		Transmittance @ 550 nm
					(Smaller is better)		(Larger is better)
	Adopted levels (parameters)				Raw data (Ω/sq)	ratio (dB)	Raw data (%)	ratio (dB)
1	1 ()	1 ()	1 (200)	1	155.11	−43.81	45	33.06
2	1 ()	2 ()	2 (300)	2	2.83	−9.04	61	35.71
3	1 ()	3 ()	3 (400)	3	5.94	−15.48	47	33.44
4	2 ()	1 ()	2 (300)	3	250.36	−47.97	43	32.67
5	2 ()	2 ()	3 (400)	1	2.54	−8.10	66	36.39
6	2 ()	3 ()	1 (200)	2	4.76	−13.55	50	33.98
7	3 ()	1 ()	3 (400)	2	21.03	−26.46	52	34.32
8	3 ()	2 ()	1 (200)	3	3.69	−11.34	68	36.65
9	3 ()	3 ()	2 (300)	1	2.78	−8.88	56	34.96