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  Nanostructure of thin silicon films by combining HRTEM, XRD and Raman spectroscopy measurements and the implication to the optical properties

Gajović, A., Gracin, D., Djerdj, I., Tomašić, N., Juraić, K., & Su, D. S. (2008). Nanostructure of thin silicon films by combining HRTEM, XRD and Raman spectroscopy measurements and the implication to the optical properties. Applied Surface Science, 254(9), 2748-2754. doi:10.1016/j.apsusc.2007.10.014.

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 Creators:
Gajović, Andreja, Author
Gracin, Davor, Author
Djerdj, Igor, Author
Tomašić, Nenad, Author
Juraić, Krunoslav, Author
Su, Dang Sheng1, Author              
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: Silicon; Solar cells; Nanostructures; Optical properties Electron microscopic investigations on thin films
 Abstract: A series of thin silicon films with different degrees of crystallinity were prepared by decomposition of silane gas highly diluted with hydrogen, in radiofrequency glow discharge. The crystallite size, shape, and the portion of crystalline phase were investigated by high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), Raman spectroscopy (RS), and X-ray powder diffraction (XRD). The absorption coefficient (a) was calculated from the measurement of UV–vis-transmittance. By using RS, the volume fractions of the crystalline phase were estimated from the ratio of the integrated intensities of transversal optical (TO)-related crystalline and amorphous bands. These results were in excellent agreement with the mean crystallite sizes measured in HRTEM images and crystallite sizes refined from XRD measurements. The red shift of absorption, appearing as a result of the increase of the crystal fraction, depends on the size and distribution of nanocrystals.

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Language(s): eng - English
 Dates: 2008
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 318914
DOI: 10.1016/j.apsusc.2007.10.014
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Title: Applied Surface Science
Source Genre: Journal
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Pages: - Volume / Issue: 254 (9) Sequence Number: - Start / End Page: 2748 - 2754 Identifier: -