Evaluation of electronic transport and optical response of two-dimensional Fe-doped TiO2 thin films for photodetector applications

Kara, Fatih; Kurban, Mustafa; Çoşkun, Burhan

doi:10.1016/j.ijleo.2020.164605

Cited by 38 publications

(9 citation statements)

References 14 publications

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“…The generation of hot carriers not only improved the detection of green light (515 nm, ≈5 × 10 −3 A W −1 ) but also extended the detection range to red (630 nm, ≈5 × 10 −4 A W −1 ), and even to the NIR (780 nm, 10 4 A W −1 ). The 808 nm laser-annealed Au NPs/IZO PD offered good reliability and stability, performing with dynamic detection and keeping its operating lifetime for more than 22 d. Even though the high potential for use in solutions based on this technique has been performed, other kinds of MO functional nanostructure (ZnO:Cd-La, and TiO 2 :Ni) [59,60] or thin film (TiO 2 :Fe, ZnO:Al, and ZnO:Li) [61][62][63] composed from sol-gel network are still worth to be tested for optimizing the photoresponsivity or response speed. Furthermore, from our work, the initial trials of fabricating Au NPs/IZO PD on 3D printable polymer substrates for UV (365 nm) detection were accomplished under a low power 808 nm laser-annealing process.…”

Section: Discussionmentioning

confidence: 99%

Exploiting Thermoplasmonic Effects for Laser‐Assisted Preparation of Au Nanoparticles/InZnO Thin Film with Visible Range Photodetection Properties

Lin

Khitous

Zan

et al. 2021

Advanced Optical Materials

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To achieve such excellent electrical properties, thin-film deposition by a high-vacuum system, such as sputtering, have been widely used. [9][10][11] Such processes usually require high cost for device fabrication. In contrast, the use of solution-based materials, especially for metal precursors used in sol-gel chemistry, has attracted significant interest over the past few years. [12][13][14][15][16][17] To achieve a thin-film oxide material based on the solgel method, a high-temperature thermal annealing process is usually necessary. It is necessary to remove the organic ligands and promote the condensation reaction to obtain a metal-oxide (MO) thin film from a xerogel structure. However, high-temperature treatment may limit further applications on flexible or plastic substrates. To date, a few techniques have been reported to overcome these drawbacks. Deep ultraviolet (DUV) or near-infrared (NIR) annealing have already been proposed as the critical step for fabricating thin-film oxide semiconductor devices. Kim et al., [18] Bolat et al., [19] and Moon et al. [20] showed that DUV or NIR annealing at low environmental temperatures can be successfully used to obtain thin-film devices with good carrier mobility and electrical properties. Furthermore, we recently showed that the use of NIR dyes can significantly improve the NIR laser curing of sol-gel indium-zinc-oxide (IZO) materials and allow their use as gas sensors. [21] One of the key parameters for the laser curing of MO precursors is to generate high absorption and efficient conversion to thermal energy. Because the sol-gel layers have an intrinsic low absorption in the NIR, it is necessary to add absorbers in the thin film to generate a local temperature increase. Highly conjugated organic molecules (NIR dyes), carbon black, and carbon nanotubes are potential candidates. Gold nanoparticles (Au NPs) have also proved their utility. Under light excitation, significant thermal effects can be generated, which are known as thermoplasmonic effects. [22][23][24][25][26][27] They correspond to the damping of a plasmon resonance, which creates a temperature increase at the surface of NP that depends on several parameters such as irradiance of the incident light, irradiated area, light wavelength, nature and morphology, surface density, nature of the surrounding medium, and the substrate. [28] In specific conditions, temperature increases such as several hundreds of degrees are achievable and have been used to trigger several Here, a new method is proposed for preparing gold nanoparticles (Au NPs)/ indium-zinc-oxide (IZO) nanocomposite thin films based on photothermal mechanisms with near-Infrared (NIR) laser annealing, which allows integrating the nanomaterial on fragile substrates such as thin glass, plastic sheets, or 3D printed pieces. The Au NPs are first prepared by NIR laser dewetting of a thin Au layer. Then, the Au NPs are used to locally cure the semiconductor material and provide suitable electronic properties owing to their efficient thermoplasmonic effect...

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Section: Discussionmentioning

confidence: 99%

Exploiting Thermoplasmonic Effects for Laser‐Assisted Preparation of Au Nanoparticles/InZnO Thin Film with Visible Range Photodetection Properties

Lin

Khitous

Zan

et al. 2021

Advanced Optical Materials

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“…Literatürde yapılan çalışmalar katkılama işleminin çalışılan malzemenin elektronik, yapısal ve optik özelliklerini geliştirerek, istenilen özellikte bir malzeme elde etmemize yardımcı olmaktadır [22,23].Örneğin, CaMnO 3 üzerine yapılan çalışmalarda, Zhang ve diğerleri [5], Sr katkısının CaMnO 3 sisteminin TE özelliklerini geliştirebileceğini rapor etmişlerdir. Zhan ve diğerleri [24], Dy katkısının CaMnO 3 yapısına eklenmesi ile elektriksel iletkenliğin geliştirilebilir olduğunu belirtmişlerdir.…”

Section: Igi̇ri̇şunclassified

Kobalt Katkılı Kalsiyum Manganez Oksit Numunelerin Sentez ve Karakterizasyonu

Ateş

Köytepe

Kayğili

2020

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Bu çalışmada, kobalt katkılı kalsiyum manganez oksit numunelerinin faz bileşimleri, kristal yapıları, yüzey morfolojileri ve termal özellikleri karakterize edildi. Co miktarının bu oksit yapı üzerindeki etkileri belirlendi. Xışını kırınımı (XRD) sonuçları, kalsiyum manganez oksit fazlarının oluşumuna işaret etmektedir. Fourier dönüşümlü kızılötesi (FTIR) analizleri, her bir numune için peroksit yapısının oluşumunu doğrulamaktadır. Termal analiz sonuçları, üretilen numunelerin termal olarak kararlı olduklarını göstermektedir. Numunelerin taramalı elektron mikroskobu (SEM) gözlemleri ve enerji dağılımlı X-ışını (EDX) analizleri, Co katkısının morfolojiye etki ettiğini ve kalsiyum manganez oksit yapıya nüfuz ettiğini desteklemektedir.

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“…Titanium dioxide TiO 2 is a versatile transition-metal oxide that has a large number of applications such as protective coatings [1][2], Photodetector [3], optical thin films [4][5], microelectronic devices [6], self-cleaning [7][8][9], and photocatalyst for the breakdown of organic contaminants in wastewaters [10][11][12][13]. All these applications are a traduction of their attractive properties such as high transmission in the visible region, wide band gap for anatase phase (3.4 eV), and high photocatalytic activity under UV light [14].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of Al/Ni-doped TiO2 films synthesized by sol-gel method: Effect of sunlight photocatalysis on the catalysts properties

Temam¹,

Djani²,

Rahmane³

et al. 2021

Preprint

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Photocatalytic activity of semiconductors is affected by the nature of metal dopant. To study the effect of non-transition and transition metal on the physical and optical properties of TiO2 based photocatalysts; Al and Ni-doped TiO2 thin films respectively were prepared via a sol-gel dip-coating method. The effect of the photocatalysis process on the properties of TiO2 based thin films was investigated. The photocatalytic activity was calculated from methylene blue dye degradation under sunlight irradiation. XRD results show that un-doped TiO2 films were grown with anatase phase, whereas, the Ni and Ni/Al-doped TiO2 films show Ti4O7 single phase. The presence of Al preferred the rutile phase. No phases related to NiO or Al2O3 were detected. Ni-TiO2 photocatalyst shows high photocatalytic activity (~ 93%) thanks to the high content of O and Ti, wide bandgap (3.35 eV), low crystal size (6.87 nm), high film thickness (288 nm), and high surface roughness (44.5 nm). After photocatalysis, all the films show a decrease in O content and thickness, whereas the indirect bandgap values were increased which suggesting the reuse with low photocatalytic activity.

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Evaluation of electronic transport and optical response of two-dimensional Fe-doped TiO2 thin films for photodetector applications

Cited by 38 publications

References 14 publications

Exploiting Thermoplasmonic Effects for Laser‐Assisted Preparation of Au Nanoparticles/InZnO Thin Film with Visible Range Photodetection Properties

Exploiting Thermoplasmonic Effects for Laser‐Assisted Preparation of Au Nanoparticles/InZnO Thin Film with Visible Range Photodetection Properties

Kobalt Katkılı Kalsiyum Manganez Oksit Numunelerin Sentez ve Karakterizasyonu

Photocatalytic activity of Al/Ni-doped TiO2 films synthesized by sol-gel method: Effect of sunlight photocatalysis on the catalysts properties

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