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000201190 1001_ $$0P:(DE-HGF)0$$aKim, Do Yun$$b0$$eCorresponding Author
000201190 245__ $$aEffect of Substrate Morphology Slope Distributions on Light Scattering, nc-Si:H Film Growth, and Solar Cell Performance
000201190 260__ $$aWashington, DC$$bSoc.$$c2014
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000201190 520__ $$aThin-film silicon solar cells are often deposited on textured ZnO substrates. The solar-cell performance is strongly correlated to the substrate morphology, as this morphology determines light scattering, defective-region formation, and crystalline growth of hydrogenated nanocrystalline silicon (nc-Si:H). Our objective is to gain deeper insight in these correlations using the slope distribution, rms roughness (σrms) and correlation length (lc) of textured substrates. A wide range of surface morphologies was obtained by Ar plasma treatment and wet etching of textured and flat-as-deposited ZnO substrates. The σrms, lc and slope distribution were deduced from AFM scans. Especially, the slope distribution of substrates was represented in an efficient way that light scattering and film growth direction can be more directly estimated at the same time. We observed that besides a high σrms, a high slope angle is beneficial to obtain high haze and scattering of light at larger angles, resulting in higher short-circuit current density of nc-Si:H solar cells. However, a high slope angle can also promote the creation of defective regions in nc-Si:H films grown on the substrate. It is also found that the crystalline fraction of nc-Si:H solar cells has a stronger correlation with the slope distributions than with σrms of substrates. In this study, we successfully correlate all these observations with the solar-cell performance by using the slope distribution of substrates.
000201190 536__ $$0G:(DE-HGF)POF2-111$$a111 - Thin Film Photovoltaics (POF2-111)$$cPOF2-111$$fPOF II$$x0
000201190 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x1
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000201190 7001_ $$0P:(DE-HGF)0$$aSantbergen, Rudi$$b1
000201190 7001_ $$0P:(DE-HGF)0$$aJäger, Klaus$$b2
000201190 7001_ $$0P:(DE-HGF)0$$aSever, Martin$$b3
000201190 7001_ $$0P:(DE-HGF)0$$aKrč, Janez$$b4
000201190 7001_ $$0P:(DE-HGF)0$$aTopič, Marko$$b5
000201190 7001_ $$0P:(DE-HGF)0$$aHänni, Simon$$b6
000201190 7001_ $$0P:(DE-Juel1)136680$$aZhang, Chao$$b7$$ufzj
000201190 7001_ $$0P:(DE-Juel1)130248$$aHeidt, Anna$$b8
000201190 7001_ $$0P:(DE-Juel1)130830$$aMeier, Matthias$$b9$$ufzj
000201190 7001_ $$0P:(DE-HGF)0$$avan Swaaij, René A. C. M. M.$$b10
000201190 7001_ $$0P:(DE-HGF)0$$aZeman, Miro$$b11
000201190 773__ $$0PERI:(DE-600)2467494-1$$a10.1021/am5054114$$gVol. 6, no. 24, p. 22061 - 22068$$n24$$p22061 - 22068$$tACS applied materials & interfaces$$v6$$x1944-8252$$y2014
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000201190 9141_ $$y2015
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