Electrical activity of iodine-diffused CdTe

✍ Scribed by J. Malzbender; E. D. Jones; N. Shaw; J. B. Mullin

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 759 KB
• Volume: 7
• Category: Article
• ISSN: 1616-301X
• DOI: 10.1002/(sici)1099-0712(199701)7:1<1::aid-amo242>3.0.co;2-t

✦ Synopsis

grown devices, 2 but recent studies on the diffusion of iodine into CdTe from the vapour 3 have shown that complex diffusion profiles are produced which can be fitted satisfactorily by an empirical function composed of the sum of four complementary error functions. Four values of the diffusivities (D 1 -D 4 ) were obtained from each profile (see Fig. 1 for a typical profile). The other important conclusions that were drawn from these measurements were that the total concentration of iodine at the surface of such slices was 10 23 cm -3 and that the diffusivity of the fastest-diffusing component at room temperature was 10 -14 cm 2 s -1 . 4 These results were confirmed independently by radiotracer sectioning and SIMS and close agreement was obtained 5 between the two measuring techniques.