InP-Based Thermionic Coolers
CALIFORNIA UNIV SANTA CRUZ SCHOOL OF ENGINEERING
Pagination or Media Count:
Thermoelectric coolers are important elements of many optoelectronic systems. Current commercial coolers are based on non-conventional semiconductors such as BiTe. In this paper we analyze the prospect of InP based material to fabricate coolers that can be integrated with optoelectronic components. Experimental results are shown where thermionic emission current in InGaAsInGaAsP heterostructures is used to enhance the cooling power of conventional bulk material. About one degree cooling over 1 micrometer thick barrier is observed i.e. a cooling power of 200-300Wsq cm. Calculations for InGaAsInAlAs superlattices show that single stage cooling by as much as 20-30 degrees should be possible.
- Electricity and Magnetism
- Electrooptical and Optoelectronic Devices