Transparent conductive film
Provided is a transparent conductive film including a transparent plastic film substrate and an indium-tin composite oxide transparent conductive film laminated on at least one surface of the transparent plastic film substrate, a value of the normalized integrated intensity of a diffraction peak measured by X-ray diffractometry in the (222) plane due to a crystal of the transparent conductive film being 4 to 25 cps·°/nm.
1. A transparent conductive film comprising a transparent plastic film substrate and an indium-tin composite oxide transparent conductive film laminated on at least one surface of the transparent plastic film substrate, a value of normalized integrated intensity of a diffraction peak measured by X-ray diffractometry in a (222) plane due to a crystal of the transparent conductive film being 4 to 25 cps·°/nm,
wherein the value of normalized integrated intensity of the diffraction peak measured by X-ray diffractometry in a (222) plane due to the crystal of the transparent conductive film is obtained as follows:
the X-ray diffractometry is performed at an incident angle of the X-ray of 0.25°, with a scintillation counter detector scanned in an out-of-plane direction, and at a step interval of 0.02° and a measurement speed of 2.0°/min;
a diffraction peak curve in the (222) plane having a peak top at about 30.5(2θ) is obtained when the incident angle on the (222) plane is plotted as the horizontal axis and the intensity of a diffraction peak is plotted as the vertical axis;
integrated intensity of the diffraction peak in the (222) plane is calculated as an area of the diffraction peak curve in which background subtraction is performed; and
a value obtained by dividing the integrated intensity of the diffraction peak in the (222) plane by a thickness of the transparent conductive film is defined as the value of normalized integrated intensity of the diffraction peak measured by X-ray diffractometry in the (222) plane due to the crystal of the transparent conductive film.
2. The transparent conductive film according to claim 1 , wherein the indium-tin composite oxide transparent conductive film has a crystal grain size of 10 to 1000 nm.
3. The transparent conductive film according to claim 1 , wherein the indium-tin composite oxide transparent conductive film includes 0.5 to 10% by mass of tin oxide.
4. The transparent conductive film according to claim 1 , wherein the indium-tin composite oxide transparent conductive film has a thickness of 10 to 30 nm.