Thermoelectric performance of silicon nanowires

Gang Zhang; Qingxin Zhang; Cong-Tinh Bui; Guo-Qiang Lo; Baowen Li
May 2009
Applied Physics Letters;5/25/2009, Vol. 94 Issue 21, p213108
Academic Journal
With finite element simulation and analytic modeling, the thermoelectric performance of silicon nanowires (SiNWs) is studied. Large cooling temperature is observed which increases remarkably as thermal conductivity of SiNW decreases. Moreover, high cooling power density of 6.6×103 W/cm2 is achieved which is about 600 times larger than that of commercial thermoelectric modules. Moreover, SiNW cooler can reach the coefficient as high as 61%. All these features make SiNW a very promising material in application of on-chip temperature controlling and heat dissipating for hot spots inside integrated circuits.


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