Photoelectric conversion device

A photoelectric conversion device comprising:

• a photoelectric conversion element that comprises a photoelectric conversion cell comprising:
• an electrode substrate;
• a counter substrate facing the electrode substrate;
• an oxide semiconductor layer disposed on the electrode substrate or the counter substrate;
• a dye supported on the oxide semiconductor layer;
• and
• an electrolyte disposed between the electrode substrate and the counter substrate, wherein the electrolyte comprises a redox pair;
• a voltage converter that boosts a voltage output from the photoelectric conversion element;
• an electric storage that is charged up to a voltage output from the voltage converter;
• a load that applies a voltage of the electric storage;
• a voltage monitor that monitors a voltage of the electric storage;
• a main switch that switches between:
• a first state where the voltage output from the voltage converter is applied to the electric storage but not the load, and
• a second state where the voltage output from the voltage converter is not applied to either the electric storage or the load;
• and
• a controller that controls the main switch such that:
• when the monitored voltage of the electric storage reaches a full charge voltage of the electric storage, the electric storage is discharged and a voltage is applied to the load by switching the main switch to the second state, and
• when the monitored voltage of the electric storage becomes less than the full charge voltage of the electric storage, the electric storage is charged by switching the main switch to the first state.