High photoresponse sensitivity of lithium-doped ZnO (LZO) thin films for weak ultraviolet signal photodetector

Zhu, Xinghua; Xie, Qingshuang; Tian, Haibo; Zhang, Ming; Gou, Zongyan; He, Shuai; Gu, Ping; Wu, Haihua; Li, Jitao; Yang, Dingyu

doi:10.1016/j.jallcom.2019.07.074

Cited by 39 publications

(6 citation statements)

References 33 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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“…Therefore, the dopant materials and concentrations affect ZnO nanostructures' physical and chemical properties [15][16][17]. Among the dopant materials, silver (Ag) is used as a dopant material for zinc oxide nanostructures (ZnO NSs) to improve physical and chemical properties since Ag has high chemical stability and high electrical conductivity [18].…”

Section: Introductionmentioning

confidence: 99%

Effect of hydrogen-related shallow donor on the physical and chemical properties of Ag-doped ZnO nanostructures

Al‐Bataineh

Ababneh

Bahti

et al. 2022

J Mater Sci: Mater Electron

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Silver-doped zinc oxide nanostructures (Ag/ZnO NSs) with Ag content of 0 wt%, 5 wt%, 10 wt%, and 20 wt% were synthesized using a hydrothermal technique. The prepared nanostructures were annealed at 500 °C for 2 h. The samples were characterized by using scanning electron microscopy, FTIR, X-ray diffraction (XRD), and electrical conductivity. FTIR spectra confirms the presence of hydrogen-related shallow donor defects in the Ag/ZnO NSs, which bind to the oxygen vacancy ($${\text{H}}_{\text{O}}$$ H O ) and consequently plays a significant role in the physicochemical properties of the metal oxide nanostructures. The $${\text{H}}_{\text{O}}$$ H O defects are blended to O- and Zn-polar Ag-doped ZnO NSs, depending on their polarity. XRD results verified that Ag/ZnO NSs have a polycrystalline hexagonal structure. Williamson–Hall methods were used to estimate the microstructural properties of polycrystalline nanostructures. The electrical conductivity increased from 0.60 to 1.10 µS/cm, and the bandgap energy decreased from 3.36 to 3.10 eV by increasing the Ag from 0 wt% up to 20 wt%.

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“…In recent years, much attention has been paid towards p-type conductivity improvement and the betterment of the magnetic properties of ZnO, especially choosing lithium (Li) as a doping element [20,29]. The photoresponse sensitivity of ZnO NPs-based thin films has been enhanced to a great degree by Li doping with ZnO following the sol-gel process [30]. Thin film transistors are a dynamic element in such devices that employ an active matrix and can be well fabricated by alkali metal-doped ZnO [31].…”

Section: Introductionmentioning

confidence: 99%

“…Park et al have explained the performance of ZnO-based thin film transistors considering the combined effect of substitutional and interstitial doping of Li within the host matrix [31]. Zhu et al indicated that the Li Zn positions have been occupied by Li atoms within the ZnO host at lower Li concentrations [30], while Li i positions are more favorable at higher Li concentrations [42]. Park et al have enunciated incorporation of Li as Li i at a lower doping level of Li within ZnO (10 mol%) and simultaneous occupancy of interstitial as well as substitutional sites in the case of a higher doping concentration ( 10 mol%) of Li [31].…”

Section: Introductionmentioning

confidence: 99%

“…In this respect, the synthesis method plays a vital role in the potential application of Li-doped ZnO nanostructures. Synthesis of Li-doped ZnO nanostructures has been achieved through various synthesis procedures such as the sol-gel method [30], simple rapid thermal decomposition [44], chemical synthesis under a constant flow of Argon gas [45], chemical precipitation followed by calcination [36,27], and solution combustion synthesis route [43]. Each method has its own advantages and limitations.…”

Section: Introductionmentioning

confidence: 99%

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Structural, optical, and antibacterial properties of Li-doped ZnO nanoparticles synthesized in water: evidence of incorporation of interstitial Li

Mukherjee¹,

Pramanik²,

Das³

et al. 2022

Phys. Scr.

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The mode of incorporation of lithium (Li) (as substitution or interstitial position) in zinc oxide (ZnO) has its own importance as far as the potential applications of Li-doped ZnO nanoparticles (NPs) are concerned. Fabrication of p-type ZnO based semiconductors as well as defect engineering based applications demand substitution of Zn2+ by Li+. However, doping of ZnO by Li with interstitial positions can play an important role in controlling the different properties of it. In the present study, we report the successful doping of Li in ZnO NPs up to a Li concentration of 10 mol% employing a simple wet chemical precipitation method in water. Up to a Li concentration of 8 mol%, doping by substitution of Li to the Zn sites have been observed. However, for 10 mol% of Li concentration, doping by incorporation of interstitial sites in addition to the substitution have been confirmed through the complementary characterization techniques. The effects of interstitial Li in ZnO on structural, optical, and antimicrobial properties have been studied in details systematically. For all the cases (structural, optical, and antimicrobial), the properties of Li-doped ZnO NPs have been changed reversibly in the ZnO NPs after incorporation of interstitial sites by Li as compared to the substitution of Li. For example, the microstrain, band gap, and antimicrobial activity have been found to increase with increase in Li concentration up to 8 mol%. However, the microstrain, band gap, and antimicrobial activity are found the decrease for 10 mol% of Li as compared to 8 mol% of Li. This study indicated that the different properties of Li-doped ZnO NPs can be controlled suitably as per the requirements for the practical applications of ZnO based materials.

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High photoresponse sensitivity of lithium-doped ZnO (LZO) thin films for weak ultraviolet signal photodetector

Cited by 39 publications

References 33 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

Effect of hydrogen-related shallow donor on the physical and chemical properties of Ag-doped ZnO nanostructures

Structural, optical, and antibacterial properties of Li-doped ZnO nanoparticles synthesized in water: evidence of incorporation of interstitial Li

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