Electrical power generation from moderate-temperature radiative thermal sources [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 006.6 Computer graphics
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. National Nuclear Security Administration ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: p. 1341-1345 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 255605
• Chủ đề: 1. 30 direct energy conversion

Tóm tắt

Moderate-temperature thermal sources (100� to 400�C) which radiate waste heat are often the by-product of mechanical work, chemical or nuclear reactions, or information processing. We demonstrate conversion of thermal radiation into electrical power using a bipolar grating-coupled complementary metal-oxide-silicon (CMOS) tunnel diode. A two-step photon-assisted tunneling charge pumping mechanism results in separation of charge carriers in pn-junction wells leading to a large open-circuit voltage developed across a load. Electrical power generation from a broadband blackbody thermal source has been experimentally demonstrated with converted power densities of 27 to 61 microwatts per square centimeter for thermal sources between 250� and 400�C. Scalable, efficient conversion of radiated waste heat into electrical power can be used to reduce energy consumption or to power electronics and sensors.