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dc.contributor.author Jo, Hyun Jun -
dc.contributor.author Kim, Dae-Hwan -
dc.contributor.author Kim, Chan -
dc.contributor.author Hwang, Dae-Kue -
dc.contributor.author Sung, Shi-Joon -
dc.contributor.author Kim, Jeong-Hwa -
dc.contributor.author Bae, In-Ho -
dc.date.accessioned 2018-01-25T01:14:20Z -
dc.date.available 2018-01-25T01:14:20Z -
dc.date.created 2017-04-10 -
dc.date.issued 2012-05 -
dc.identifier.issn 0374-4884 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/5362 -
dc.description.abstract The purpose of the present study is to investigate the optical and the structural properties of CuIn 1-xGa xSe 2 (CIGS) thin films with various Ga/[In+Ga] ratios grown by using the coevaporation technique. The Ga ratios were 0, 0.15, 0.29, 0.40, 0.56, 0.73, and 1. As the Ga/[In+Ga] ratio increased, the grain size of CIGS films decreased, and the X-ray diffraction (XRD) peaks of the CIGS films progressively shifted to higher diffraction angles. In the cross-sectional scanning electron microscopy (SEM) images, the grain size of the CIGS thin films near the molybdenum electrode was smaller than it was near the CIGS surface. These results indicate that the diffusion rates of elements were different. The photocurrent (PC) spectra also showed that the band gap energy of the CIGS films increased as the Ga/[In+Ga] ratio increased. Accordingly, the short-circuit current density (J SC) linearly decreased, and the open-circuit voltage (V OC) increased and saturated at high Ga/[In+Ga] ratios (x > 0.4) due to the defects on the CIGS films surface. A correlation between the Ga/[In+Ga] ratio and the number of surface defects for the CIGS films is discussed. © 2012 The Korean Physical Society. -
dc.language English -
dc.publisher Korean Physical Society -
dc.title The optical and structural properties of CuIn1-x Ga (x) Se-2 thin films fabricated with various Ga contents by using the co-evaporation technique -
dc.type Article -
dc.identifier.doi 10.3938/jkps.60.1708 -
dc.identifier.scopusid 2-s2.0-84863612986 -
dc.identifier.bibliographicCitation Journal of the Korean Physical Society, v.60, no.10, pp.1708 - 1712 -
dc.identifier.kciid ART001665772 -
dc.description.isOpenAccess FALSE -
dc.subject.keywordAuthor CIGS -
dc.subject.keywordAuthor Ga/[In plus Ga] ratio -
dc.subject.keywordAuthor Defect -
dc.citation.endPage 1712 -
dc.citation.number 10 -
dc.citation.startPage 1708 -
dc.citation.title Journal of the Korean Physical Society -
dc.citation.volume 60 -
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