UV Treatment of Flexible Copper Nanowire Mesh Films for Transparent Conductor Applications

Table 1 ID, sheet resistance (Rs) and transmittance values (T _550 nm, T _{350–750 nm} and T _{750–2500 nm}) of various TCEs

Sample ID	Ink concentration/mg mL⁻¹	Post-treatment	Rs/Ω sq⁻¹	T _550 nm	T _{350–750 nm}	T _{750–2500 nm}
ITO/ref	n.a.	n.a.	10	90	84	50
#1	20	220 °C/1 h	25	61	61	65
#2	20	230 °C/1 h	743	46	45	57
#3	10	UV/2 min	42	87	87	89
#4	10	UV/4 min	103	89	89	91
#5	20	UV/2 min	31	67	67	68
#6	20	UV/4 min	49	70	71	74
#7	20	UV/6 min	236	73	73	76

The values are given for a commercial, glass-supported, ITO TCE and for either thermally or UV-treated, PET-supported Cu NW TCEs. T _550 nm corresponds to the transparency at a wavelength of 500 nm, and T _{350–750 nm} and T _{750–2500 nm}, to the average transparency in the ranges 350–750 nm and 750–2500 nm, respectively
n.a. not applicable