C. Meneghini et al., STRUCTURE OF A-SI1-XCX-H ALLOYS BY WIDE-ANGLE X-RAY-SCATTERING - DETAILED DETERMINATION OF FIRST-SHELL AND 2ND-SHELL ENVIRONMENT FOR SI ANDC ATOMS, Physical review. B, Condensed matter, 50(16), 1994, pp. 11535-11545
We present a study of the structure of a-Si1-xCx:H alloys by wide-angl
e x-ray scattering. By carefully analyzing the radial distribution fun
ctions and comparing with previous extended x-ray-absorption finestruc
ture measurements, we provide a detailed and quantitative description
of local bonding around Si and C atoms. Among the results presented, m
ost noteworthy are constant interatomic distances in first and second
shells and the detection of a strong tendency for chemical order.