The effect of heat treatment on spin-on oxide glasses in solar cell application

Bándy, Enikő; Foldvary, A.; Rencz, M.

doi:10.1109/therminic.2013.6675238

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…SOG consists of a polysilicate polymer, ethanol (C 2 H 6 O), 2-propanol (C 3 H 8 O), acetone (CH 3 COCH 3 ), and water (H 2 O). Heat treatment of SOG at high temperatures removes impurities and solvents, insulating it like SiO 2 based on the Si-O structure [ 36 ]. SOD comprises ethanol (C 2 H 6 O), water (H 2 O), and phosphorus silicate polymer, with a 15% internal phosphorus mass ratio.…”

Section: Methodsmentioning

confidence: 99%

Synaptic Plasticity Modulation of Neuromorphic Transistors through Phosphorus Concentration in Phosphosilicate Glass Electrolyte Gate

Mah,

Park,

Cho

2024

Nanomaterials

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This study proposes a phosphosilicate glass (PSG)-based electrolyte gate synaptic transistor with varying phosphorus (P) concentrations. A metal oxide semiconductor capacitor structure device was employed to measure the frequency-dependent (C-f) capacitance curve, demonstrating that the PSG electric double-layer capacitance increased at 103 Hz with rising P concentration. Fourier transform infrared spectroscopy spectra analysis facilitated a theoretical understanding of the C-f curve results, examining peak differences in the P-OH structure based on P concentration. Using the proposed synaptic transistors with different P concentrations, changes in the hysteresis window were investigated by measuring the double-sweep transfer curves. Subsequently, alterations in proton movement within the PSG and charge characteristics at the channel/PSG electrolyte interface were observed through excitatory post-synaptic currents, paired-pulse facilitation, signal-filtering functions, resting current levels, and potentiation and depression characteristics. Finally, we demonstrated the proposed neuromorphic system’s feasibility based on P concentration using the Modified National Institute of Standards and Technology learning simulations. The study findings suggest that, by adjusting the PSG film’s P concentration for the same electrical stimulus, it is possible to selectively mimic the synaptic signal strength of human synapses. Therefore, this approach can positively contribute to the implementation of various neuromorphic systems.

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Section: Methodsmentioning

confidence: 99%

Synaptic Plasticity Modulation of Neuromorphic Transistors through Phosphorus Concentration in Phosphosilicate Glass Electrolyte Gate

Mah,

Park,

Cho

2024

Nanomaterials

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“…Depending on the heat-treatment conditions, such as the temperature, time, and ambient gas, impurities and solvents were removed from the interior of the SOG. SOG treated at high temperatures for an adequate duration exhibited excellent insulation properties akin to SiO 2 , thereby enhancing its electrical stability [36]. SOD comprised components of a phosphorus silicate polymer with a phosphorus mass ratio of 15% of the total mass ratio of SOD.…”

Section: Synthesis Of Psg and Sog Filmsmentioning

confidence: 99%

Enhancement of the Synaptic Performance of Phosphorus-Enriched, Electric Double-Layer, Thin-Film Transistors

Mah,

Park,

Cho

2024

Electronics

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The primary objective of neuromorphic electronic devices is the implementation of neural networks that replicate the memory and learning functions of biological synapses. To exploit the advantages of electrolyte gate synaptic transistors operating like biological synapses, we engineered electric double-layer transistors (EDLTs) using phosphorus-doped silicate glass (PSG). To investigate the effects of phosphorus on the EDL and synaptic behavior, undoped silicate spin-on-glass-based transistors were fabricated as a control group. Initially, we measured the frequency-dependent capacitance and double-sweep transfer curves for the metal-oxide-semiconductor (MOS) capacitors and MOS field-effect transistors. Subsequently, we analyzed the excitatory post-synaptic currents (EPSCs), including pre-synaptic single spikes, double spikes, and frequency variations. The capacitance and hysteresis window characteristics of the PSG for synaptic operations were verified. To assess the specific synaptic operational characteristics of PSG-EDLTs, we examined EPSCs based on the spike number and established synaptic weights in potentiation and depression (P/D) in relation to pre-synaptic variables. Normalizing the P/D results, we extracted the parameter values for the nonlinearity factor, asymmetric ratio, and dynamic range based on the pre-synaptic variables, revealing the trade-off relationships among them. Finally, based on artificial neural network simulations, we verified the high-recognition rate of PSG-EDLTs for handwritten digits. These results suggest that phosphorus-based EDLTs are beneficial for implementing high-performance artificial synaptic hardware.

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Influence of selected reactive oxygen species on the photocatalytic activity of TiO2/SiO2 composite coatings processed at low temperature

Romero-Morán

Sánchez-Salas

Molina

2021

Applied Catalysis B: Environmental

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The effect of heat treatment on spin-on oxide glasses in solar cell application

Cited by 4 publications

References 6 publications

Synaptic Plasticity Modulation of Neuromorphic Transistors through Phosphorus Concentration in Phosphosilicate Glass Electrolyte Gate

Synaptic Plasticity Modulation of Neuromorphic Transistors through Phosphorus Concentration in Phosphosilicate Glass Electrolyte Gate

Enhancement of the Synaptic Performance of Phosphorus-Enriched, Electric Double-Layer, Thin-Film Transistors

Influence of selected reactive oxygen species on the photocatalytic activity of TiO2/SiO2 composite coatings processed at low temperature

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