[IEEE 2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) - Taipei, Taiwan (2019.12.3-2019.12.6)] 2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) - Study and explore on the energy harvesting of the solar cell with DC/DC converter PWM system

摘要： Energy harvesting is generally defined as the collection of light, heat, vibration, and energy sources such as electromagnetic waves, and converting into electricity to provide the equipment itself with enough energy to maintain normal operation. This research uses sunlight to convert into energy output. It controls the voltage of the output by controlling the duty of the PWM technology. The system requires a DC/DC design and the output has a large capacitance. And the DC/DC post-stage filtering must be good. CIGS solar cells (efficiency of about 20%) are composed of Cu, In, Ga, and Se in a specific ratio, and have a wider wavelength range and absorption coefficient than tantalum materials.