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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
Authors
Park, SY[Park, Soon-Yong]Lee, EW[Lee, Eun-Woo]Lee, SH[Lee, Sang-Hwan]Lee, SH[Lee, Sung Ho]Huh, KS[Huh, Kwang Soo]Kang, JK[Kang, J. K.]Kim, DH[Kim, D. -H.]Lee, DH[Lee, D. H.]Jeon, CW[Jeon, Chan-Wook]
DGIST Authors
Kang, JK[Kang, J. K.]Kim, DH[Kim, D. -H.]; Lee, DH[Lee, D. H.]
Issue Date
2010
Citation
Molecular Crystals and Liquid Crystals, 532, 424-430
Type
Article
Article Type
Article
Keywords
Cell TemperatureCIGS FilmsCo-EvaporationCo-EvaporationsComposition RangesComposition RatioCopperCu-PoorCu(In, Ga)SeCu(In, Ga)Se2Diffraction IntensityDisplay DevicesEvaporationFill-FactorGalliumGrain SizeGrowth BehaviorOpen Circuit VoltagePeak RatiosPhotovoltaic PerformanceSemiconducting Selenium CompoundsSolar CellSolar CellsSolar Power GenerationTemperature VariationThin-Film Solar CellsThin-FilmsThin FilmThree-Stage ProcessVapor DepositionVoid Density
ISSN
1542-1406
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)Se2 (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∼0.4 and Cu/(In+Ga)=0.84∼1.04, which were obtained at the Ga temperature of 1033∼1035°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 0.16cm2 (fill factor, open circuit voltage, and short circuit current were 50.34%, 576mV and 30.79mA/cm2, respectively). Copyright © Taylor & Francis Group, LLC.
URI
http://hdl.handle.net/20.500.11750/3539
DOI
10.1080/15421406.2010.497091
Publisher
Taylor and Francis Ltd.
Related Researcher
Files:
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Collection:
Convergence Research Center for Wellness1. Journal Articles


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