Effect of Fe doping on the crystallinity of CuO nanotubes and the efficiency of the hybrid solar cells

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• 作者：Mahmood ul haq^a ; Muzaffar Iqbal^a ; ^c ; Muhammad Aurag Zeb Gul Sial^a ; Saima Shabbir^b ; Muhammad Siddiq^a ; Azhar Iqbal^a ; ^{aiqbal@qau.edu.pk}
• 关键词：CuO nanotubes ; Fe-doping ; Band gap tuning ; Crystallinity ; Solar cells
• 刊名：Journal of Photochemistry and Photobiology A: Chemistry
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：335
• 期：Complete
• 页码：112-118
• 全文大小：1338 K
• 卷排序：335

文摘

The band gap of CuO nanotubes has been effectively tuned by Fe doping from 2.6 eV to 2.9 eV. By increasing the Fe doping content the diameters of CuO nanotubes is increased and also the density of the nanotubes. The band gap of CuO nanotubes is increased by increasing the doping content of Fe due to Burstein-Moss effect. Fe doping improves the crystallinity of CuO nanotubes and removes the deep trap levels. The removal of deep trap levels is exhibited by steady-state fluorescence measurements. The efficiency (ɳ) of the hybrid bulk-hetero junction solar cells, fabricated by P3HT and CuO nanotubes is slightly decreased by increasing the Fe doping content. This was due to decrease in the mobility of the charge carriers because of non-linear effects of electron-electron scattering in the conduction band.