Nanostructured solar cell based on spray pyrolysis deposited ZnO nanorod array

Krunks, Malle; Katerski, Atanas; Dedova, Tatjana; Açik, Ilona Oja; Mere, Arvo

doi:10.1016/j.solmat.2008.03.002

Cited by 155 publications

(60 citation statements)

References 16 publications

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“…Previous result suggests that R g should be lower than R D Ti , consistent with the fact that the refractive index of ZnO is higher than that of air, and closer to that of TiO 2 . Consequently, outcomes from methods M1-M4 are in good agreement with the optical BG determined for ZnO nanorods despite the substrate employed and the dimensions of the nanorods 9,10 . The fluorescence spectrum of the stack sample was obtained in order to compare the energy required to stimulate fundamental electronic transitions on the ZnO nanorods, with the computed values of BG achieved within the application of all methods (M1-M4).…”

Section: Band Gap Determination Using the Kubelkamunk Methodssupporting

confidence: 62%

“…Nevertheless, the available models are not suitable for all nanostructures, particularly when a rough surface has been developed 1,2 . In fact, this is why the utilization of the spectrophotometric technique combined with standard optical equations that require the measurement of only Transmittance and Reflectance is commonly accepted [6][7][8][9][10] . As a matter of fact, for those cases when a precise definition of the BG is desired or when possible substrate interference is detected, transport theories, specifically the KubelkaMunk (K-M) method, are employed 3,4,[11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

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Optical Band Gap Estimation of ZnO Nanorods

et al. 2016

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The optical band gap energy of ZnO nanorods was estimated by different methods found in literature. These nanorods were deposited onto TiO 2 covered borosilicate glass substrates by aerosol assisted chemical vapor deposition. Characterization techniques were employed to reveal the crystalline structure, surface morphology and optical properties of the sample. The analysis proved that hexagonal cross-section ZnO nanorods in the wurtzite phase were grown onto a TiO 2 buffer thin film of anatase. Variations in the components of transmittance and reflectance were associated with the development of a rough surface. Such fluctuations were correlated with the equations employed to estimate the optical band gap. The different methods indicated band gap values of 3.17 to 3.24 eV. The energy band gap of 3.24 eV agrees to that reported in the literature for ZnO nanorods. Fluorescence spectroscopy confirmed the accuracy of the mathematical predictions since an emission at 380 nm (3.26 eV) was seen.

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Section: Band Gap Determination Using the Kubelkamunk Methodssupporting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Optical Band Gap Estimation of ZnO Nanorods

et al. 2016

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“…These advantages are of considerable interest for practical applications such as, gas sensors [1,2], piezoelectric devices [3], surface acoustic wave devices [4], solar cells [5][6][7][8],etc. Recently, ZnO thin films have been used as a window layer and contact layer for thin film solar cells with Cu(In,Ga)S 2 or Cu(In,Ga)Se 2 absorber material.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al-doped on physical properties of ZnO Thin films grown by spray pyrolysis on SnO₂: F/glass

Ajili

Jebbari

Kamoun‐Turki

et al. 2012

EPJ Web of Conferences

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Abstract. Transparent conducting thin films of aluminum-doped zinc oxide (ZnO:Al) have been deposited on SnO 2 :F/glass by the chemical spray technique, starting from zinc acetate (CH 3 CO 2 ) 2 Zn.2H 2 O and aluminum chloride AlCl 3 . The effect of changing the aluminum-to-zinc ratio y from 0 to 3 at.%, has been thoroughly investigated. It was found that the optical and electrical properties of Al doped ZnO films improved with the addition of aluminum in the spray solution until y=2%. At this Al doping percentage, the thin layers have a resistivity equal to 4.1 x 10 -4 Ω.cm and a transmittance of about 90 % in the region [600-1000] nm. XRD patterns confirm that the films have polycristalline nature and a wurtzite (hexagonal) structure which characterized with (100), (002) and (101) principal orientations. The undoped films have (002) as the preferred orientation but Al doped ones have (101) as the preferred orientation. Beyond y= 1%, peak intensities decrease considerably.

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“…[25][26][27][28][29] Furthermore, for the solution-deposition of ZnO nanorods, there is no substrate size limitation and no need for expensive and sophisticated lithographic techniques. We employ hydrogenated amorphous silicon ͑a-Si:H͒ as the absorber material rather than CdSe/CdTe, 3,7 In 2 S 3 , 9,10 CuInS 2 , 11,12 InP, and GaP, 24 since silicon is a nontoxic thin film photovoltaic material that is abundantly available. Figure 1͑a͒ represents a schematic of the nanorod solar cell design in a cross-sectional view.…”

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confidence: 99%

Nanorod solar cell with an ultrathin a-Si:H absorber layer

Kuang

Werf

Houweling

et al. 2011

Applied Physics Letters

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We propose a nanostructured three-dimensional ͑nano-3D͒ solar cell design employing an ultrathin hydrogenated amorphous silicon ͑a-Si:H͒ n-i-p junction deposited on zinc oxide ͑ZnO͒ nanorod arrays. The ZnO nanorods were prepared by aqueous chemical growth at 80°C. The photovoltaic performance of the nanorod/a-Si:H solar cell with an ultrathin absorber layer of only 25 nm is experimentally demonstrated. An efficiency of 3.6% and a short-circuit current density of 8.3 mA/ cm 2 were obtained, significantly higher than values achieved for planar or even textured counterparts with three times thicker ͑ϳ75 nm͒ a-Si:H absorber layers.

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Nanostructured solar cell based on spray pyrolysis deposited ZnO nanorod array

Cited by 155 publications

References 16 publications

Optical Band Gap Estimation of ZnO Nanorods

Optical Band Gap Estimation of ZnO Nanorods

Effect of Al-doped on physical properties of ZnO Thin films grown by spray pyrolysis on SnO₂: F/glass

Nanorod solar cell with an ultrathin a-Si:H absorber layer

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Nanostructured solar cell based on spray pyrolysis deposited ZnO nanorod array

Cited by 155 publications

References 16 publications

Optical Band Gap Estimation of ZnO Nanorods

Optical Band Gap Estimation of ZnO Nanorods

Effect of Al-doped on physical properties of ZnO Thin films grown by spray pyrolysis on SnO2: F/glass

Nanorod solar cell with an ultrathin a-Si:H absorber layer

Contact Info

Product

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Effect of Al-doped on physical properties of ZnO Thin films grown by spray pyrolysis on SnO₂: F/glass