Grazing-incidence x-ray diffraction study of pentacene thin films with the bulk phase structure

The electrical and optical properties of molecular thin films are widely used, for instance in organic electronics, and depend strongly on the molecular arrangement of the organic layers. It is shown here how atomic structural information can be obtained from molecular films without further knowledge of the single-crystal structure. C60 fullerene was chosen as a representative test material. A 250 nm C60 film was investigated by grazing-incidence X-ray diffraction and the data compared with a Bragg–Brentano X-ray diffraction measurement of the corresponding C60 powder. The diffraction patterns of both powder and film were used to calculate the pair distribution function (PDF), which allowed an investigation of the short-range order of the structures. With the help of the PDF, a structure model for the C60 molecular arrangement was determined for both C60 powder and thin film. The results agree very well with a classical whole-pattern fitting approach for the C60 diffraction patterns.

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Comprehensive X-Ray Diffraction Study of YBa$_{\bf 2}$Cu$_{\bf 3}$O$_{{\bf 7}-\ninmb{\delta}}$ Thin Films

Japanese Journal of Applied Physics ◽

10.1143/jjap.34.6036 ◽

1995 ◽

Vol 34 (Part 1, No. 11) ◽

pp. 6036-6040

Author(s):

A. Z. Moshfegh ◽

A. H. Fatollahi ◽

Y. Q. Wang ◽

Y. Y. Sun ◽

P. H. Hor ◽

...

Keyword(s):

Thin Films ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray

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Grazing incidence synchrotron X-ray diffraction study of crystal orientation in microporous films

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/s0168-583x(02)01713-5 ◽

2003 ◽

Vol 200 ◽

pp. 160-164 ◽

Cited By ~ 1

Author(s):

S. Mintova ◽

T.H. Metzger ◽

T. Bein

Keyword(s):

Diffraction Study ◽

Crystal Orientation ◽

Grazing Incidence ◽

X Ray Diffraction ◽

X Ray ◽

Microporous Films

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Synthesis and Characterizations of Strontium Substituted Hydroxyapatite Thin Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.93-94.231 ◽

2010 ◽

Vol 93-94 ◽

pp. 231-234

Author(s):

B. Hongthong ◽

Satreerat K. Hodak ◽

Sukkaneste Tungasmita

Keyword(s):

Thin Film ◽

Thin Films ◽

Chemical Composition ◽

Spin Coating ◽

Phase Structure ◽

Sol Gel ◽

Cross Linking ◽

X Ray Diffraction ◽

X Ray ◽

Sol Gel Process

Strontium substituted hydroxyapatite(SrHAp) were fabricated both in the form of powder as reference and thin film by using inorganic precursor reaction. The sol-gel process has been used for the deposition of SrHAp layer on stainless steal 316L substrate by spin coating technique, after that the films were annealed in air at various temperatures. The chemical composition of SrHAp is represented (SrxCa1-x)5(PO4)3OH, where x is equal to 0, 0.5 and 1.0. Investigations of the phase structure of SrHAp were carried out by using X-ray diffraction technique (XRD). The results showed that strontium is incorporated into hydroxyapatite where its substitution for calcium increases in the lattice parameters, and Sr3(PO4)2 can be detected at 900°C. The SEM micrographs showed that SrHAp films exhibited porous structure before develop to a cross-linking structure.

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