Seed Free Growth of Aligned ZnO Nanowire Arrays on AZO Substrate

Liu, Liqing; Cao, Guangxia; Hong, Kunquan

doi:10.1007/s11595-018-1977-7

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…In the case of ZnO NWs, the hydrothermal growth required a starting ZnO seed layer, which can be formed by various techniques on different substrates, including conventional FTO-coated glass [41,[54][55][56]. However, zinc-oxide-based transparent electrodes such as AZO have been suggested to potentially act as efficient seed layers [48,57,58]. For these reasons, the performance of devices based on NW grown on different substrates have been compared: FTO/compact ZnO (referred as ZnOc) or bare AZO (both without ETL).…”

Section: Photovoltaic Performance As a Function Of Growing Substrate ...mentioning

confidence: 99%

Low-Temperature Hydrothermal Growth of ZnO Nanowires on AZO Substrates for FACsPb(IBr)3 Perovskite Solar Cells

et al. 2022

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Electron and hole transport layers (ETL and HTL) play an essential role in shaping the photovoltaic performance of perovskite solar cells. While compact metal oxide ETL have been largely explored in planar n-i-p device architectures, aligned nanowires or nanorods remain highly relevant for efficient charge extraction and directional transport. In this study, we have systematically grown ZnO nanowires (ZnO NWs) over aluminum-doped zinc oxide (AZO) substrates using a low-temperature method, hydrothermal growth (HTG). The main growth parameters were varied, such as hydrothermal precursors concentrations (zinc nitrate hexahydrate, hexamethylenetetramine, polyethylenimine) and growing time, in order to finely control NW properties (length, diameter, density, and void fraction). The results show that ZnO NWs grown on AZO substrates offer highly dense, well-aligned nanowires of high crystallinity compared to conventional substrates such as FTO, while demonstrating efficient FACsPb(IBr)3 perovskite device performance, without the requirement of conventional compact hole blocking layers. The device performances are discussed based on NW properties, including void fraction and aspect ratio (NW length over diameter). Finally, AZO/ZnO NW-based devices were fabricated with a recent HTL material based on a carbazole moiety (Cz–Pyr) and compared to the spiro-OMeTAD reference. Our study shows that the Cz–Pyr-based device provides similar performance to that of spiro-OMeTAD while demonstrating a promising stability in ambient conditions and under continuous illumination, as revealed by a preliminary aging test.

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Section: Photovoltaic Performance As a Function Of Growing Substrate ...mentioning

confidence: 99%

Low-Temperature Hydrothermal Growth of ZnO Nanowires on AZO Substrates for FACsPb(IBr)3 Perovskite Solar Cells

et al. 2022

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“…Because of that, CuO is usually used in combination with large-bandgap semiconductors, such as ZnO and TiO 2 , in order to improve their photocatalytic activity under solar light irradiation [15]. It was reported that the p-n heterojunction between ZnO and CuO has a high photocatalytic activity because of a better charge separation [16][17][18][19][20][21][22]. Liu et al [23] prepared CuO/ZnO nanocomposites by homogeneous coprecipitation and used them for the photocatalytic degradation of methyl orange.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

Fang¹,

Liang²,

Xu³

2020

Beilstein J. Nanotechnol.

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Inorganic semiconductor oxides loaded on composite nanofibers (CNFs) have been widely applied in environmental monitoring, industry, aviation, and transportation. In this paper, heterostructured CuO-ZnO-loaded CNF membranes (CNFMs) were prepared successfully by a combination of electrospinning, heat treatment, and hydrothermal synthesis. The influence of the synthesis parameters on morphology, structure, and properties of the CNFMs was investigated, and the optimal process parameters were determined. Then, the CNFMs obtained with optimal process parameters were applied for the photocatalytic degradation of methyl orange. It was found that the CNFMs could be reused to degrade methyl orange at least three times, and the degradation rate remained above 90%. 631

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“…Because of its narrow band gap, CuO is usually used in combination with large band gap semiconductor, such as ZnO and TiO2, to improve their photocatalytic activity under solar light irradiation [15]. It was reported that the p-n heterojunction composed of ZnO and CuO had a selective photocatalytic activity because the formation of p-n heterojunction could cause a better charge separation [16][17][18][19][20][21][22]. Liu et al [23] prepared CuO/ZnO nanocomposites by homogeneous coprecipitation method of coordination oxidation and used it for photocatalytic degradation of methyl orange.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and photocatalytic performance of hetero-structured CuO-ZnO loaded composite nanofiber membranes

Fang¹,

Yu²,

Xu³

2020

Preprint

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Owing to the nano-effect of nanofibers and special properties of semiconductor oxides, inorganic semiconductor oxides loaded composite nanofibers (CNFs) have been widely applied in environmental monitoring, industry, aviation, transportation and other fields. In this paper, the hetero-structured CuO-ZnO loaded CNF membranes (CNFMs) were prepared successfully by a combination of electrospinning technology, heat treatment and hydrothermal method. The effects of electrospinning, heat treatment and hydrothermal parameters on morphology, structure and properties of the CNFMs were investigated, and the optimal process parameters were determined. Then the hetero-structured CuO-ZnO loaded CNFMs obtained under the condition of the optimal process parameters were applied to photocatalytic degradation of methyl orange, and it was found the CNFMs could be reused to degrade methyl orange at least three times, and the degradation rate remained above 90%.

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Seed Free Growth of Aligned ZnO Nanowire Arrays on AZO Substrate

Cited by 4 publications

References 16 publications

Low-Temperature Hydrothermal Growth of ZnO Nanowires on AZO Substrates for FACsPb(IBr)3 Perovskite Solar Cells

Low-Temperature Hydrothermal Growth of ZnO Nanowires on AZO Substrates for FACsPb(IBr)3 Perovskite Solar Cells

Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

Preparation, characterization and photocatalytic performance of hetero-structured CuO-ZnO loaded composite nanofiber membranes

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