Synthesis and Characterizations of LaMnO3 Perovskite Powders Using Sol-Gel Method

Ammonium Hydroxide ◽

X Ray Diffraction ◽

X Ray ◽

Dye Sensitized ◽

Gel Technique ◽

Abstract The present research demonstrates the synthesis and characterization of LaMnO3 perovskite powders using the sol-gel technique for dye-sensitive solar cell applications. With this respect, transparent solutions were prepared from La and Mn based precursors, distilled water and citric acid monohydrate. Ammonium hydroxide was incorporated into the La-Mn solution in order to neutralize/precipitate at 24oC for 1 hour in the air. The solution was allowed to evaporate on a hot plate device at 90 °C in the air. The obtained solutions were dried at 90 oC for 24 hours to form a xerogel structure, dried at 200 oC for 2 hours and consequently annealed at 500 and 850 oC for 2 hours in the air. Thermal, structural, microstructural, optical and magnetic properties of the powders were characterized through differential thermal analysis-thermogravimetry (DTA-TG), Fourier transform infrared (FTIR), X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), scanning electron microscopy (SEM), Malvern zeta sizer (PSD), UV-vis spectrometer and vibrating sample magnetometer (VSM). The obtained results indicate promise, especially the low band range, that LaMnO3 powders can be used in dye-sensitized solar cells and can positively affect performance and efficiency.

Fabrication and Characterization of TiO2 Nanotubes for Dye-Sensitized Solar Cells

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1131.215 ◽

2015 ◽

Vol 1131 ◽

pp. 215-220

Author(s):

Emmanuel Nyambod Timah ◽

Buagun Samran ◽

Udom Tipparach

Keyword(s):

Solar Cells ◽

Anatase Phase ◽

Ammonium Fluoride ◽

X Ray Diffraction ◽

X Ray ◽

Dye Sensitized ◽

Dc Power ◽

TiO2nanotubes were successfully synthesized by anodization method of Ti foils. The electrolyte was composed of ethylene glycol (EG), ammonium fluoride (0.3%wt NH4F) and de-ionized water (2% vol H2O). A constant DC power supply of 50 V was used during anodization with anodizing times of 1 hour, 2 hours, 4 hours and 6 hours. The samples were annealed at 450 °C for 2 hours. The TiO2nanotubes were studied by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Structural analysis revealed the presence of pure Ti, and the crystalline anatase phase due to transformation of amorphous TiO2after annealing. The morphology of TiO2nanotube sizes showed an increase in tube diameter with anodizing time from approximately 50 nm to 200 nm. However, the efficiency of dye-sensitized solar cells increased with anodizing times up to a maximum of 5.74 % for anodizing time of 4 hours.

Production and characterization of TiO2 nanoparticle thin films for its application in DSSCs

Metallurgical Research & Technology ◽

10.1051/metal/2020078 ◽

2020 ◽

Vol 117 (6) ◽

pp. 622

Author(s):

Saranyoo Chaiwichian ◽

Sumneang Lunput

Keyword(s):

Thin Films ◽

X Ray Diffraction ◽

X Ray ◽

Glass Substrates ◽

Dye Sensitized ◽

Photovoltaic Efficiency ◽

Transmission Electron ◽

In this research, TiO2 nanoparticle thin films were successfully prepared on FTO glass substrates through a doctor blade technique, and its application was tested in dye-sensitized solar cells (DSSCs) with different sensitizing dyes such as methylene blue (MB) and methyl orange (MO). The physicochemical properties of intended thin films were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and UV-vis diffuse reflectance spectra (UV-vis DRS) techniques. The experimental results revealed that dipped TiO2 nanoparticle thin films into MB dye solution showed a higher photovoltaic efficiency (1.45%) when compared with the MO dye solution. A reasonable mechanism of DSSCs was also proposed.

Synthesis and characterization of ZnO nanoparticles using sol gel technique for dye sensitized solar cells applications

Journal of Physics Conference Series ◽

10.1088/1742-6596/1294/2/022022 ◽

2019 ◽

Vol 1294 ◽

pp. 022022

Author(s):

H Musleh ◽

H Zayed ◽

S Shaat ◽

H M Tamous ◽

J Asad ◽

...

Keyword(s):

Solar Cells ◽

Zno Nanoparticles ◽

Sol Gel ◽

Synthesis And Characterization ◽

Dye Sensitized ◽

Gel Technique ◽

Investigation of sol-gel processed CuO/SiO2 nanocomposite as a potential photoanode material

Materials Science-Poland ◽

10.1515/msp-2015-0097 ◽

2015 ◽

Vol 33 (4) ◽

pp. 826-834 ◽

Cited By ~ 5

Author(s):

Tenzin Tenkyong ◽

Neena Bachan ◽

J. Raja ◽

P. Naveen Kumar ◽

J. Merline Shyla

Keyword(s):

Sol Gel ◽

Cost Effective ◽

Xrd Analysis ◽

Potential Candidate ◽

X Ray Diffraction ◽

Structural Formation ◽

Dye Sensitized ◽

AbstractSynthesis and characterization of a highly efficient photoconductive nanocomposite comprising of two common metal oxides: copper oxide (CuO) and silicon dioxide (SiO2) are being reported in this paper. The CuO/SiO2 nanocomposite has been synthesized using a cost-effective and facile sol gel route. The structural, chemical and optical properties of the prepared samples have been studied using various characterization techniques. The UV-Vis analysis revealed better absorption in the case of the nanocomposite as compared to its parent materials. X-ray diffraction (XRD) analysis has been employed to determine the structural formation of the nanocomposite and the crystallite size with the use of Scherrer’s formula. The photo conductivity study of the sample showed enhanced photocurrent in the case of nanocomposite as compared to its single components, thus, presenting it as a potential candidate for solar cell applications, especially as photoanode material in the dye-sensitized solar cells (DSSC).

X-ray Characterization of Dye Adsorption in Coadsorbed Dye-Sensitized Solar Cells

The Journal of Physical Chemistry C ◽

10.1021/jp404572y ◽

2013 ◽

Vol 117 (33) ◽

pp. 17033-17038 ◽

Cited By ~ 11

Author(s):

Mitsunori Honda ◽

Masatoshi Yanagida ◽

Liyuan Han ◽

Kenjiro Miyano

Keyword(s):

Solar Cells ◽

Dye Adsorption ◽

X Ray ◽

Dye Sensitized ◽

CuO Nanostructure by Oxidization of Copper Thin Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.55-57.645 ◽

2008 ◽

Vol 55-57 ◽

pp. 645-648

Author(s):

Phathaitep Raksa ◽

A. Gardchareon ◽

N. Mangkorntong ◽

Supab Choopun

Keyword(s):

Thin Films ◽

Oxidation Reaction ◽

X Ray Diffraction ◽

Copper Thin Film ◽

X Ray ◽

Sem Image ◽

Dye Sensitized ◽

Cuo Nanostructure ◽

CuO nanostructures were synthesized by oxidizing copper thin films. The copper thin film was grown on alumina substrates by evaporation copper powder at pressure of 0.04 mtorr. The copper thin films were then oxidized 800, and 900oC for 12, 24 and 48 hr, respectively. The obtained CuO nanostructures were investigated by Energy Dispersive Spectroscopy (EDS), Field Emission Scanning Electron Microscope (FE-SEM) image, and X-Ray Diffraction (XRD). The diameter of CuO nanostructure is around 100-600 nanometers and it is depends on oxidation reaction time and temperature. These CuO nanostructures have a potential application for nanodevices such as nano gas sensor or dye-sensitized solar cells.

Study on the chemical stability of catalyst counter electrodes for dye-sensitized solar cells using a simple X-ray photoelectron spectroscopy-based method

Journal of Power Sources ◽

10.1016/j.jpowsour.2014.06.011 ◽

2014 ◽

Vol 268 ◽

pp. 25-36 ◽

Cited By ~ 9

Author(s):

Dong-Jin Yun ◽

Jungmin Kim ◽

Jongwon Chung ◽

SungHoon Park ◽

WoonJoong Baek ◽

...

Keyword(s):

Solar Cells ◽

Chemical Stability ◽

Photoelectron Spectroscopy ◽

Counter Electrodes ◽

X Ray ◽

Dye Sensitized ◽

Preparation and Characterization of N Doped TiO2/ Sepiolite Composite Materials

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.597 ◽

2011 ◽

Vol 284-286 ◽

pp. 597-600

Author(s):

Dai Mei Chen ◽

Hai Peng Ji ◽

Jian Xin Wang ◽

Jian Chen ◽

Xin Long Luan ◽

...

Keyword(s):

Composite Materials ◽

Photoelectron Spectroscopy ◽

Sol Gel ◽

X Ray Diffraction ◽

X Ray ◽

Nitrogen Doped ◽

Nitrogen Contents ◽

Scanning Electron ◽

Oxygen Atoms

Nitrogen doped TiO2/sepiolite composite materials (N-TiO2/sep) with different nitrogen contents were prepared by a sol-gel method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), respectively. XRD and SEM results showed that anatase-TiO2nanoparticles were distributed homogenously on the surface of sepiolite. XPS revealed that N atoms could incorporate into the lattice of anatase TiO2substituting the oxygen atoms sites of oxygen atoms.

Thick PLZT Films Grown by Sol-gel for Optical Device Applications

MRS Proceedings ◽

10.1557/proc-541-735 ◽

1998 ◽

Vol 541 ◽

Cited By ~ 2

Author(s):

M. Linnik ◽

O. Wilson ◽

A. Christou

Keyword(s):

Electron Microscopy ◽

Sol Gel ◽

Phase Modulator ◽

X Ray Diffraction ◽

X Ray ◽

Device Applications ◽

Gel Technique ◽

Scanning Electron

AbstractThe preparation and characterization of thick PLZT films for spatial phase modulator applications are reported. Films were fabricated on LSCO/LAO substrates by a sol-gel technique using multiple heat-treatment parameters. The crystal quality of PLZT 9/65/35 films was investigated by X-ray diffraction and scanning electron microscopy.

The Influence of Titania Electrode Modification with Lanthanide Ions Containing Thin Layer on the Performance of Dye-Sensitized Solar Cells

International Journal of Photoenergy ◽

10.1155/2012/927407 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 23

Author(s):

Maciej Zalas ◽

Maciej Klein

Keyword(s):

Solar Cells ◽

Modified Electrodes ◽

Lanthanide Ions ◽

X Ray Diffraction ◽

Photoexcited Electron ◽

X Ray ◽

Dye Sensitized ◽

Back Transfer ◽

The lanthanide and scandium groups ions (except Pm and Ac) have been used as dopants of TiO2film in dye-sensitized solar cells. The X-ray diffraction spectra show that the modification has no influence on the structure of the electrode; however, the diffuse reflectance UV-Vis measurements exhibit significant changes in the electronic properties of modified electrodes. The appearance of energy barrier preventing photoexcited electron back-transfer was confirmed for Sc, Ce, Sm, Tb, Ho, Tm, and Lu modified cells. The best photoconversion performance of 8.88 and 8.80% was found for samples modified with Ce and Yb, respectively, and it was greater by 31.4 and 30.2% than that of a unmodified cell.