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000811834 1001_ $$0P:(DE-Juel1)136680$$aZhang, Chao$$b0$$eCorresponding author
000811834 245__ $$aImpact of transparent conductive oxide front side texture on the open-circuit voltage of a-Si:H solar cells
000811834 260__ $$aWeinheim$$bWiley-VCH$$c2016
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000811834 520__ $$aHigh efficiency thin-film silicon solar cells require texturing of the front contacts for advanced light management. However, optically favorable textures may be challenging in terms of the electrical performance. Solar cells deposited on very rough front contacts show a reduced open-circuit voltage, Voc, as compared to flat TCOs. This contribution focuses on the impact of rough surfaces on the Voc in a-Si:H solar cells deposited on six different textured front TCOs. With various i-layer thicknesses from 100 to 400 nm the origin of the Voc loss is investigated. Based on our results we propose that the reduction of Voc in a-Si:H solar cells are mainly due to defective regions in the bulk material induced by very rough textures. It is also seen that enlarging the i-layer thickness can improve the Voc of solar cells when grown on very rough textures. By using variable illumination intensity measurements the existence of shunts could be evidenced.
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000811834 7001_ $$0P:(DE-Juel1)130268$$aMerdzhanova, Tsvetelina$$b1
000811834 7001_ $$0P:(DE-Juel1)130830$$aMeier, Matthias$$b2
000811834 7001_ $$0P:(DE-Juel1)145392$$aSommer, Nicolas$$b3
000811834 7001_ $$0P:(DE-Juel1)130212$$aAstakhov, Oleksandr$$b4$$eCorresponding author
000811834 773__ $$0PERI:(DE-600)1481091-8$$a10.1002/pssa.201532961$$gVol. 213, no. 7, p. 1942 - 1948$$n7$$p1942 - 1948$$tPhysica status solidi / A$$v213$$x1862-6300$$y2016
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