| 摘要 |
To provide an electrode substrate 1 that has a transparent conductive layer 11, a current-collecting metal layer 12 that is provided on the transparent conductive layer 11, and an insulating layer 14 that covers the current-collecting metal layer 12 on a base plate, wherein, when a thermal expansion coefficient of the base plate 10 is defined as ±, and a thermal expansion coefficient of the insulating layer 14 is defined as ², ± > ² is satisfied, and in which the thickness of the transparent conductive layer 11 is 0.05 to 5 µm. The electrode substrate 1 can lower the resistance of the electrode substrate 1. Moreover, it is possible to provide an electrode substrate that can suppress degradation of the characteristics due to leak current from the metal wiring to the electrolyte solution and corrosion of the current-collecting metal layer and a photoelectric conversion element that is suitably used in a solar battery.
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