ZnO Nanowires and Their Application for Solar Cells

Peng, Qiang; Qin, Yuancheng

doi:10.5772/17923

Cited by 12 publications

(10 citation statements)

References 63 publications

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“…3(b). The nanowires obtained by chemical and physical vapor deposition have generally good crystalline quality and important length (more often they are in nanobelt morphology) (Peng et al 2011). Fang et al (2006) successfully synthesized aligned ZnO nanofibers in a dense array form and on a Zn substrate by hydrothermal treatment of Zn foil in an ammonia/alcohol/water mixed solution.…”

Section: Zinc Oxide Nanowiresmentioning

confidence: 99%

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A review of zinc oxide photoanode films for dye-sensitized solar cells based on zinc oxide nanostructures

Tyona¹,

Osuji²,

Ezema³

2013

Advances in nano research

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Zinc oxide (ZnO) is a unique semiconductor material that exhibits numerous useful properties for dye-sensitized solar cells (DSSCs) and other applications. Various thin-film growth techniques have been used to produce nanowires, nanorods, nanotubes, nanotips, nanosheets, nanobelts and terapods of ZnO. These unique nanostructures unambiguously demonstrate that ZnO probably has the richest family of nanostructures among all materials, both in structures and in properties. The nanostructures could have novel applications in solar cells, optoelectronics, sensors, transducers and biomedical sciences. This article reviews the various nanostructures of ZnO grown by various techniques and their application in DSSCs. The application of ZnO nanowires, nanorods in DSSCs became outstanding, providing a direct pathway to the anode for photo-generated electrons thereby suppressing carrier recombination. This is a novel characteristic which increases the efficiency of ZnO based dye-sensitized solar cells.

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Section: Zinc Oxide Nanowiresmentioning

confidence: 99%

“…SEM (a-c) and TEM (d) images of ZnO nanowire arrays hydrothermally grown on Zn foil at 150 o C for 2 days(Peng et al 2011) …”

mentioning

confidence: 99%

A review of zinc oxide photoanode films for dye-sensitized solar cells based on zinc oxide nanostructures

Tyona¹,

Osuji²,

Ezema³

2013

Advances in nano research

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“…In the last few years, an emerging solar cell design is to transfer the typical planar structure into a 3-dimensional one by utilizing 1-dimensional nanostructures to build devices in an "up and out" fashion [5][6][7]. There are three main reasons that make the 3-dimensional design more favorable.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional structures based on ZnO/CdS and ZnO/(Zn,Mg)O core–shell nanowires embedded in Cu(In,Ga)S2 for solar cell applications

Armstrong

Cui

2015

Solar Energy Materials and Solar Cells

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a b s t r a c tThin film and core-shell nanowire heterostructures containing copper indium gallium sulfide Cu(In,Ga)S 2 (CIGS) as light absorber are fabricated by low cost, solution based processes. The unique structures consist of ZnO and CdS or (Zn,Mg)O core-shell nanowire arrays embedded inside CIGS thin films for solar cell applications. Nontoxic (Zn,Mg)O buffer layer deposited by atomic layer deposition is proven to be suitable for replacing solution grown CdS for fabricating CIGS nanowire solar cells. A systemic comparison of device performance is made between the CIGS nanowire solar cells and their thin film counterparties with different final treatment temperatures. Overall, the nanowire devices show higher efficiency than the corresponding planar structures fabricated under similar conditions. Effect of nanowire on the solar cell performance is further studied by using nanowires of various lengths, which reveals that the longer nanowire arrays resulted in a higher short circuit current. This study represents the first working CIGS nanowire solar cells reported so far and provides an opportunity for investigating the mechanism of nanowire solar cells using a well-defined material system.

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“…Metal oxides, such as titanium dioxide (TiO 2 ) and zinc oxide (ZnO), are the best candidates as semiconductor material. In this study, the material used as the photo electrode is ZnO, since it has direct band gap energy and high exciton binding energy around ~60 meV, (Peng & Qin, 2011;Raoufi, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effect of Citric Acid Addition upon the Precipitation Process on the Nanostructural Characteristics of ZnO Nanoparticles

Akbar¹,

Yuwono²,

Sofyan³

et al. 2015

IJTech

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Zinc oxide (ZnO) nanoparticles have been investigated in depth, due to their potential as a semiconductor material in dye sensitized solar cell applications. In this current research, ZnO nanostructure was synthesized using a simple precipitation technique with the addition of citric acid (C 6 H 8 O 7 ) as the capping agent. Various ratios of ZnO and citric acid were prepared, i.e. 1:1, 2:1, 4:1 and calcination temperatures of 150 and 400°C were used to investigate the effect of those parameters on the ZnO nanostructure and its crystallinity. The nanostructure characteristics, i.e. nanocrystallite size, crystallinity, and optical properties were determined by using x-ray diffraction (XRD), scanning electron microscopy (SEM), and ultra-violet visible (UV-Vis) spectroscopy, respectively. The investigation results showed that ZnO nanostructure was formed as spherical shapes and rods in the range of 19.8-30.8 nm with the lowest band gap energy (E g ) of 3.15 eV obtained under conditions of a 4:1 ratio and calcined at 400°C. Considering nanostructural characteristics, the ZnO nanostructures in this study would be suitable for application as a semiconductor oxide layer in a dye sensitized solar cell.

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ZnO Nanowires and Their Application for Solar Cells

Cited by 12 publications

References 63 publications

A review of zinc oxide photoanode films for dye-sensitized solar cells based on zinc oxide nanostructures

A review of zinc oxide photoanode films for dye-sensitized solar cells based on zinc oxide nanostructures

Three-dimensional structures based on ZnO/CdS and ZnO/(Zn,Mg)O core–shell nanowires embedded in Cu(In,Ga)S2 for solar cell applications

Effect of Citric Acid Addition upon the Precipitation Process on the Nanostructural Characteristics of ZnO Nanoparticles

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