Abstract: A power tracking device and a power tracking method is disclosed herein. The power tracking device includes a power voltage setting circuit, a switch, a switching signal circuit, and a voltage memory circuit. The switching signal circuit is configured for sending a first control signal to the switch. When the switch receives the first control signal and electrically isolates the power source and the power voltage setting circuit, the voltage memory circuit stores an open circuit voltage of the power source and sends a setting voltage relative to the open circuit voltage, and when the switch receives the first control signal and electrically connects the power source and the power voltage setting circuit, the power voltage setting circuit sets an output voltage of the power source to correspond with the setting voltage.

Abstract: A power tracking device and a power tracking method is disclosed herein. The power tracking device includes a power voltage setting circuit, a switch, a switching signal circuit, and a voltage memory circuit. The switching signal circuit is configured for sending a first control signal to the switch. When the switch receives the first control signal and electrically isolates the power source and the power voltage setting circuit, the voltage memory circuit stores an open circuit voltage of the power source and sends a setting voltage relative to the open circuit voltage, and when the switch receives the first control signal and electrically connects the power source and the power voltage setting circuit, the power voltage setting circuit sets an output voltage of the power source to correspond with the setting voltage.

Abstract: A solar cell module is provided and includes a first solar cell and a second solar cell. The first solar cell includes a first metal substrate, a first photoelectric conversion layer, a first top electrode layer, a first P-N junction semiconductor, and a first bottom electrode layer. The second solar cell includes a second metal substrate, a second photoelectric conversion layer, a second top electrode layer, a second P-N junction semiconductor, and a second bottom electrode layer. The first photoelectric conversion layer and the first P-N junction semiconductor are respectively located on two opposite sides of the first metal substrate. The second photoelectric conversion layer and the second P-N junction semiconductor are respectively located on two opposite sides of the second metal substrate. The second bottom electrode layer is located on the second P-N junction semiconductor, and is electrically coupled to the first metal substrate.