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CdTe PROPERTIES AND THIN-FILM FABRICATION METHODS 623<br />

1400<br />

5<br />

600 400 200 100<br />

T<br />

[°C]<br />

1200<br />

1000<br />

800<br />

600<br />

CdTe<br />

1092°C<br />

Log<br />

[p sat /Torr]<br />

0<br />

−5<br />

−10<br />

Cd<br />

Te 2<br />

400<br />

200<br />

−15<br />

−20<br />

CdCl 2<br />

CdTe<br />

CdS<br />

0<br />

0 20 40 60 80 100<br />

Atom % Te<br />

−25<br />

0.001 0.0015 0.002 0.0025 0.003<br />

1/T<br />

[K]<br />

Figure 14.3 (a) CdTe T–x phase diagram (1 atm) [47] and (b) vapor–solid p sat versus 1/T diagram<br />

for CdTe, CdS, CdCl 2 , Cd, and Te [48]<br />

Cd, T m = 321 ◦ C, or Te, T m = 450 ◦ C [49]. A detailed examination of the T–x projection<br />

around the CdTe stoichiometric composition indicates a very narrow, ∼10 −6 at.%, symmetrical<br />

existence region at T

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