Effect of Post‐Hydrothermal Treatments on the Physical Properties of ZnO Layer Derived from Chemical Bath Deposition

Sholehah, Amalia; Yuwono, Akhmad Herman; Sofyan, Nofrijon; Hudaya, Chairul; Amal, Muhamad Ikhlasul

doi:10.14716/ijtech.v8i4.9487

Cited by 6 publications

(5 citation statements)

References 13 publications

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“…Apart from that, the ability of DSSC-based materials is also influenced by the structure of the oxide layer associated with characteristic of high surface area to absorb sensitizing dyes so that system performance can be maximized. In this case, the semiconductor layers most often used in DSSC are usually metal oxide materials such as TiO2, ZnO, CdSe, CdS, WO3, Fe2O3, SnO2, Nb2O5, and Ta2O5 (Wang et al, 2014;Sholehah et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Solar Cells with TiO2 Nanoparticles Sensitized using Natural Dye Extracted from Mangosteen Pericarps

Sofyan¹,

Ridhova²,

Yuwono³

et al. 2017

IJTech

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With the increasingly shrinking reserves of fossil-based energy, as well as the damaging effects of the use of fossil-based energy sources such as the greenhouse effect and global warming, efforts are needed to find energy alternatives. One device being developed as an alternative source of renewable energy by utilizing solar energy source is dye-sensitized solar cells (DSSC) that works using simple photosynthetic-electrochemical principle in the molecular level. In this device, the inorganic oxide semiconductors such as TiO2 has a great potential for the absorption of the photon energy from the solar, especially in the form of TiO2 nanoparticle structure. In this study, a commercial TiO2 nanoparticle was used. The asreceived TiO2 nanoparticle was characterized using X-ray Diffraction (XRD) and scanning electron microscope (SEM). For sensitizer, natural dye extracted from mangosteen (Garcinia mangostana L.) pericarps was used. The extracted natural dye was characterized using Fourier transform infrared (FTIR) for the functional groups, whereas the ultra violet-visible (UV-Vis) was used to examined the absorption activity of the extracted natural dye. The performance of DSSC was analyzed through a precision current versus potential different (I-V) curve analyzer. The maximum power conversion efficiency (PCE) of the mangosteen natural dye was given by yhe one extracted using ethanol containing 20% distilled water as compared to the commercial organic dye with PCE of 4.02%. This result is convincing and promising for the next development.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Solar Cells with TiO2 Nanoparticles Sensitized using Natural Dye Extracted from Mangosteen Pericarps

Sofyan¹,

Ridhova²,

Yuwono³

et al. 2017

IJTech

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“…Pada umumnya, sintesis nanorods ZnO menggunakan metode CBD belum mampu menghasilkan struktur vertikal tegak sempurna di atas substrat [11]. Struktur vertikal tegak sempurna dari rods di atas substrat dapat ditingkatkan dengan membuat lapisan bibit pada substrat.…”

Section: Pendahuluanunclassified

Pengaruh Perlakuan Hidrotermal Terhadap Morfologi, Sifat Optik Dan Sifat Listrik Lapisan Tipis Nanorods Zno

Suhaimi¹

2020

metal.

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Zinc oxide nanorods (ZnO NRs) is a semiconductor material that has been widely applied in various fields. In this research, ZnO NRs were successfully grown on ITO substrates by chemichal bath deposition (CBD) method. The process begins with making a seed solution using an ecimolar mixture of Zn-Nitrate and hexamethylentetramine (HMTA) at 00C for one hour with 0.015 M concentration. Furthermore, making a layer of seeds using spin coating technique. ZnO NRs were grown using the CBD method at 900C for three hours then treated with variations which are hydrothermal method treatment and non-hydrothermal method treatment at 1500C for three hours. Samples were given characterization treatment using SEM, XRD, UV-Vis and four-point probe. SEM results showed that hydrothermal treatment was able to increase the coverage of nanorods on the substrate to be more prevelently and was able to increase the vertical structure of the nanorods. The results of XRD analysis showed that samples given hydrothermal treatment experienced an increase in the crystallite size. The amount of crystallite size in the sample treated with variation of non-hydrothermal treatment and hydrothermal treatment was 71, 198 and 165.696 nm. Hydrothermal treatment of nanorods samples decreased the sample diameter from 288,252 nm to 125,824 nm. The transmittance value of the samples decreased in the presence of hydrothermal treatment which is 56.53% to 38.67%. The hydrothermal treatment was able to reduce the energy bandgap (Eg) of the sample, while the sample of non-hydrothermal treatment showed value of the Eg was 3.22 eV. Meanwhile, the value of Eg after hydrothermal treatment was 3.17 eV. The resistivity value of ZnO NRs with hydrothermal treatment was 0.833 x 10-4 Ωcm, while the resistivity value of non-hydrothermal treatment was 1.126 x 10-4 Ωcm. Key words: zinc-oxide nanorods, chemical bath deposition, hydro-thermal

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“…The nanoflower structures from both types of ZnO can be seen in Figure 1. There was the potential for the ZnO seed layer to fail during the hydrothermal process due to the high temperature, longer duration process, and high pressure (Sholehah et al, 2017).…”

Section: Hydrothermalmentioning

confidence: 99%

ZnO Nanorods Formation for Dye-Sensitized Solar Cells Applications

Winantyo¹,

Murakami²

2017

IJTech

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Different morphologies of zinc oxide (ZnO) can be obtained through various synthesizing methods, such as that of the water bath. By synthesizing under various conditions, different ZnO morphologies can be seen as the result of the water bath method. Replacing ZnO nanoparticles with vertically aligned ZnO nanorods results in a much higher energy conversion efficiency. Yet vertically aligned nanorods can only be grown through difficult and expensive methods. Several researchers have studied the growth of one-dimensional (1D) nanorods on homogeneous film with various growth conditions. However, there has been little in the way of research on ZnO nanorods grown on ZnO seed layers using the water bath method. In this research, vertically aligned nanorods with an optimum size ratio were formed through a simple water bath method. This method reveals that the ZnO nanorods are well aligned and grown with a high density and uniformity on the substrate. Their X-ray diffraction patterns reveal that the nanorods are grow in the [001] direction. The density, diameter, and length of the ZnO nanorods can be altered by changing the growing condition. All of the samples were characterized using a scanning electron microscope, X-ray diffraction, and micro Raman spectroscopy. To investigate crystal growth, zinc nitrate and zinc acetate were used when preparing the solution. The results demonstrate that the morphology and alignment of ZnO nanorods are determined by the precursor's type and deposition time.

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Effect of Post‐Hydrothermal Treatments on the Physical Properties of ZnO Layer Derived from Chemical Bath Deposition

Cited by 6 publications

References 13 publications

Fabrication of Solar Cells with TiO2 Nanoparticles Sensitized using Natural Dye Extracted from Mangosteen Pericarps

Fabrication of Solar Cells with TiO2 Nanoparticles Sensitized using Natural Dye Extracted from Mangosteen Pericarps

Pengaruh Perlakuan Hidrotermal Terhadap Morfologi, Sifat Optik Dan Sifat Listrik Lapisan Tipis Nanorods Zno

ZnO Nanorods Formation for Dye-Sensitized Solar Cells Applications

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