Fig. 2.
FESEM micrographs of ZnO nanowires prepared at different immersing times.
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F. A. Mahmoud, Ninet Ahmed. Elaboration of ZnO nanowires by solution based method, characterization and solar cell applications[J]. Journal of Semiconductors, 2018, 39(9): 093002. doi: 10.1088/1674-4926/39/9/093002
F. A. Mahmoud, N Ahmed, Elaboration of ZnO nanowires by solution based method, characterization and solar cell applications[J]. J. Semicond., 2018, 39(9): 093002. doi: 10.1088/1674-4926/39/9/093002.
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Elaboration of ZnO nanowires by solution based method, characterization and solar cell applications
doi: 10.1088/1674-4926/39/9/093002
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Abstract
ZnO nanowires (NWs) layers have been synthesized using a two-step chemical solution method on ITO glass substrates coated with ZnO seeds at different immersing times. The structures, morphology and optical properties of the synthesized ZnO NWs have been investigated. The prepared ZnO NWs have an obvious polycrystalline hexangular wurtzite structure and are preferentially oriented along the c-axis (002). FESEM micrographs showed that the prepared ZnO NWs are close to being vertically grown and more densely at higher immersing times. Poly [2-methoxy-5(2′-ethyl-hexyloxy)-1,4-phenylenevinylene], MEH-PPV, was used as an active layer to prepare three samples of MEH-PPV/ZnO solar cell based on ZnO NWs that were prepared at different immersing times. A maximum power conversion efficiency of 0.812% was achieved for MEH-PPV/ZnO solar cell prepared at a higher immersing time. The improved efficiency may be attributed to the enhancement of both open-circuit voltage and fill factor. -
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