Properties of Cu(In,Ga)Se-2 Thin Film Solar Cells on Ga Temperature Variation

Title
Properties of Cu(In,Ga)Se-2 Thin Film Solar Cells on Ga Temperature Variation
Author(s)
전찬욱박순용[박순용]이은우[이은우]이상환[이상환]허광수[허광수]강진규[강진규]김대환[김대환]이동화[이동화]이성호[이성호]
Issue Date
201011
Publisher
TAYLOR & FRANCIS LTD
Citation
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.532, pp.424 - 430
Abstract
In this paper the effect the Ga/(In+Ga) ratio, which was controlled by Ga cell temperature, on the growth behavior of Cu(In,Ga)Se-2 (CIGS) thin film and its photovoltaic performance is presented. It was found that both the grain size and the void density of CIGS layer decreased due to higher incorporation of Ga in CIGS by increasing Ga temperature. It was revealed that the CIGS films satisfying the composition ratio of Ga/(In+Ga) = 0.3 similar to 0.4 and Cu/(In+Ga) = 0.84 similar to 1.04, which were obtained at the Ga temperature of 1033 similar to 1035 degrees C, has the comparable diffraction intensity of (112) and (220) peaks. The (112)/(220) peak ratio of either Cu-rich or heavily Cu-poor CIGS films was found to deviate from unity and the solar cells made at these composition range showed lower photovoltaic performances. The highest efficiency of solar cell obtained by adjusting Ga cell temperature was 8.93% on device area of 0.16 cm(2) (fill factor, open circuit voltage, and short circuit current were 50.34%, 576 mV and 30.79 mA/cm(2), respectively).
URI
http://hdl.handle.net/YU.REPOSITORY/23360http://dx.doi.org/10.1080/15421406.2010.497091
ISSN
1542-1406
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공과대학 > 화학공학부 > Articles
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