Heat Treatment in Molecular Precursor Method for Fabricating Metal Oxide Thin Films

Nagai, Hiroki; Sato, Mitsunobu

doi:10.5772/50676

Cited by 19 publications

(21 citation statements)

References 90 publications

(126 reference statements)

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“…The molecular-precursor method (MPM), developed by the authors, represents a simple procedure for thinfilm fabrication of various metal oxides or phosphates [13]. By using the MPM [14,15], an excellent p-type Cu 2 O thin film was first fabricated by heat treating a precursor film containing a dibutylammonium salt of Cu(II) complex with an ethylenediamine-N,N,N 0 ,N 0 -tetraacetic acid (EDTA) ligand under Ar gas flow.…”

Section: Introductionmentioning

confidence: 99%

Conductive and semi-transparent Cu thin film fabricated using molecular precursor solutions

et al. 2015

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Section: Introductionmentioning

confidence: 99%

Conductive and semi-transparent Cu thin film fabricated using molecular precursor solutions

et al. 2015

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mentioning

confidence: 99%

“…6 The MPM used to fabricate the active materials is a wet process that can be used to produce thin films of various metal oxides or phosphates, including titania with high photoreactivity, Cu 2 O as a p-type semiconductor, and biocompatible calcium phosphate compounds. [7][8][9] This method is based on the inclusion of metal complexes in coating solutions, which have many practical advantages, such as excellent stability, homogeneity, miscibility, and coatability. This is because highly stable metal complexes can be dissolved in suitable solvents, such as ethanol, after being combined with appropriate alkylamines.…”

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confidence: 99%

Photovoltaic lithium-ion battery fabricated by molecular precursor method

Nagai

Suzuki

Takahashi

et al. 2016

Funct. Mater. Lett.

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A novel thin-film lithium-ion battery (LIB) which can be charged by the light irradiation was fabricated by molecular precursor method. The unprecedented, translucent thin-film LIB, fabricated on a fluorine-doped tin oxide pre-coated glass substrate, was attained by using the active materials, titania for anode and LiCoO 2 for cathode, respectively. The averaged potential at 2.04 V was observed by applying a constant current of 0.2 mA. Then, that at 1.82 V was detected after 60 s during the sequential self-discharge process. The charging voltage of the assembled battery was 1.38 V with irradiation of 1-sun, the self-discharge voltage was 1.37 V. Based on the calibration curve of the charging voltages over constant currents ranging from 0-1.0 mA, the detected value can be theoretically reduced to the charging operation by applying a constant current of approximately 60 μA. The charge and discharge of this device was stable voltage at least 30 cycles. The two-in-one device can simultaneously generate and store electricity from solar light, the renewable energy source, and may be applied in smart windows for distributed power system according to on-site demand.Keywords: Photovoltaic device; lithium-ion batteries; translucent; molecular precursor method; thin film.Distributed power generation using renewable energy sources, such as solar light, can efficiently supply electricity according to on-site demand. If the electrodes of lithium-ion batteries (LIBs), which are the dominant power sources for most portable electronics, could function as a solar cell, the storage device could provide electricity without an electric power supply.We recently reported a transparent thin-film device that can function as a LIB. The thin-film LIB was fabricated with Li 4 Ti 5 O 12 (LTO) for the anode and Li 3 Fe 2 (PO 4 ) 3 (LFP) for the cathode on a fluorine-doped tin oxide (FTO) pre-coated glass substrate, and an electrolytic solution dissolving LiPF 6 . A wet process known as the molecular precursor method (MPM) was used to fabricate the active material thin-films with thicknesses of 100 nm on the substrates. 1 In the charge/discharge cyclic test of the LIB assembled with these electrodes, the synchronous electrochromic reactions of the LTO were clearly observed during repeated operation. Therefore, the transparent thin-film LIB has many practical applications, such as monitoring electrochemical reactions and use in electrochromic windows.Zhang et al. reported that titania particles immobilized on an anodic electrode constitute an excellent candidate for LIB active materials because of their high safety, good capacity retention, and low self-discharge. 2 In fact, titania has excellent cyclability and chemical stability and negligible toxicity in LIBs. 3,4 Additionally, anatase nanotubes have also been characterised as active materials and have been shown to have electrochemical potentials of 1.5À1.7 V versus Li/Li þ . 5 Regarding the chemical fabrication of two-in-one LIBs, we are therefore interested in the photovoltaic nature of ...

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“…As a result, the MPM represents a facile procedure for thin ilm fabrication of various metal oxides or phosphates, which are useful as electron and/or ion conductors, semiconductors, dielectric materials, etc [24,25]. Figure 1 shows the Co 3 O 4 thin ilms, which were irst fabricated using the molecular precursor solutions.…”

Section: Molecular Precursor Methodsmentioning

confidence: 99%

Molecular Precursor Method for Fabricating p-Type Cu2O and Metallic Cu Thin Films

Nagai¹,

Sato²

2017

Modern Technologies for Creating the Thin-Film Systems and Coatings

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Functional thin ilms are used in various ields of our life. Many diferent methods are used to fabricate these ilms including physical vapor deposition (PVD) and chemical processes. The chemical processes can be used to manufacture thin ilms in a relatively cheap way, as compared to PVD methods. This chapter summarizes the procedures of the molecular precursor method (MPM), a chemical process, for fabrication of both metal oxide semiconductor Cu 2 O and metallic Cu thin ilms by utilizing Cu(II) complexes in coating solutions. The MPM, recently developed and reported by the present authors, represents a facile procedure for thin ilm fabrication of various metal oxides or phosphates. This method pertinent to the coordination chemistry and materials science including nanoscience and nanotechnology has provided various thin ilms of high quality. The MPM is based on the design of metal complexes in coating solutions with excellent stability, homogeneity, miscibility, coatability, etc., which are practical advantages. The metal oxides and phosphates are useful as the electron and/or ion conductors, semiconductors, dielectric materials, etc. This chapter will describe the principle and recent achievement, mainly on fabricating the p-type Cu 2 O and metallic Cu thin ilms of the MPM.

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Heat Treatment in Molecular Precursor Method for Fabricating Metal Oxide Thin Films

Cited by 19 publications

References 90 publications

Conductive and semi-transparent Cu thin film fabricated using molecular precursor solutions

Conductive and semi-transparent Cu thin film fabricated using molecular precursor solutions

Photovoltaic lithium-ion battery fabricated by molecular precursor method

Molecular Precursor Method for Fabricating p-Type Cu2O and Metallic Cu Thin Films

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