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Showing papers by "Petko Vitanov published in 2002"

Journal Article•DOI•
Deposition, structure evolution and dielectric properties of BaTiO3 and BaxSr1−xTiO3 thin films prepared by the sol–gel method

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Petko Vitanov1, Antoaneta Harizanova1, Tatyana Ivanova1, D Velkov1, Zd Raytcheva1 •
Bulgarian Academy of Sciences1
24 Dec 2002-Vacuum
TL;DR: In this paper, the results from XPS and XRD measurement show that, at high thermal annealing at 700-800°C, there is a penetration of the Si atoms from the substrate into the layer, forming silicon oxide.

22 citations

Book Chapter•DOI•
The Behavior Of Pv Module Parameters As A Function Of Solar Cell Temperature In Hot Climates

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Petko Vitanov1, K. Ivanova1, D. Velkov1, Y. G. Kuddan1, N. Tyutyundzhiev1 •
Bulgarian Academy of Sciences1
01 Jan 2002
TL;DR: In hot climates, the use of PV modules is sometimes problematic, since their efficiency normally decreases with increasing solar cell temperature as mentioned in this paper, and the temperature behavior of PV module is thus important when considering their application for large-scale economical power generation.
Abstract: In hot climates, the use of PV modules is sometimes problematic, since their efficiency normally decreases with increasing solar cell temperature. The temperature behavior of PV modules is thus important when considering their application for large-scale economical power generation.