High Efficiency TE Generator

Hot-Side Temperature (∞C)200 400 600 800 1000

Eff

icie

ncy

(%)

0

5

10

15

20

25

30

35

Bi2Te 3/Sb 2Te

3/Bi

2Se 3  

Ba-

Yb-

CoS

b 3

Ce-

Fe-C

oSb 3

La3T

e 4

Commercial TEGs

ZT=0.7

ZT=1.5 Sheetak Thin F

ilm TEGs

•  Unique  thermoelectric  energy  converter  “bricks”  –  High  efficiency  (>  20%)  exploiFng  state-‐of-‐the-‐art  materials  –  Robust,  fault  tolerant  designs  –  CTE  mismatch  tolerant,  oxidaFon  resistant,  and  diffusion  free  contacts  

•  Target  Sheetak  product  :  0.5-‐5    kW  

SnS

e

Dicing 6” wafers Packaging

3 µm Bi0.5Sb1.5Te3.2

BaYbCoSb3 films

PVD, CVD

Surface Array

Integrated TE

5  x  5  μm2  

4-Die IR Image

LOW-‐COST   HIGH-‐RELIABILITY  HIGH-‐EFFICIENCY   CTE-‐MATCHED  

Advanced Dielectrics

Thin Film TEG/TEC

High  Temperature  OperaFon  

1000×  ReducAons  in  Materials  Usage  Results  in  10×  Lower  Module  Cost  High  Temperature  OperaAon  and  High  Efficiency  Results  in  Lower  System  Cost  

Developmental Needs

Build  fully  funcFonal  &  reliable  high  temperature  TEG  module  •  High  temperature  bonding  •  OxidaFon  resistant  coaFngs  •  CTE  mismatch  management  •  Diffusion  barriers