Energy scavenging devices and manufacturing thereof

摘要

This invention is related to energy scavenging device and in particular, to energy harvesting or scavenging from the environmental radiation covering from solar spectrum and thermal radiation. Energy harvesting device is an integrated device comprising the devices that capture the radiation and converted into electrons, and also energy management devices to manage the converted energy either to store, to operate the electronic devices, and/or recharge the batteries. The energy scavenging devices integrates several device capabilities such as energy conversion, management, and storing the energy, on a common platform. Herein a design of a device capable to scavenge or harvest the energy from environment radiation is disclosed. A primary objective of this invention is to provide a design of a scavenging device that harvests the energy from environment radiation, operates 24/7, thereby generate and store, manage the energy as required.

主权项

1. An energy generating device comprising:
a daylight energy harvesting unit; a power management unit located in close physical proximity to and electrically connected to said daylight energy harvesting unit; and an infrared energy harvesting unit located in close physical proximity to and electrically connected to said power management unit;
wherein said power management unit consists of a CMOS-based integrated circuit configured to manage and control the energy scavenged by said energy harvesting unit such that said power management unit regulates voltage output, wherein said power management unit comprises at least one capacitor for temporarily storing energy;wherein said daylight energy harvesting unit and said power management unit are bonded so as to be discretely integrated;wherein said infrared energy harvesting unit and said power management unit are bonded so as to be discretely integrated;wherein said daylight energy harvesting unit is stacked above said power management unit, and said power management unit is stacked above said infrared energy harvesting unit;wherein said daylight energy harvesting unit comprises an absorption material selected from the group consisting of Si, amorphous silicon, Si:Ge, GaN, GaAs, InGaAs, InP, CdTe, CdS, and polymer; andwherein said infrared energy harvesting unit comprises an absorption material selected from the group consisting of InGaAs, InP, InSb, and HgCdTe.