Enhanced charge transfer activity in Au nanoparticles decorated ZnO nanorods photoanode

Iwantono, Iwantono; Saad, Siti Khatijah Md; Anggelina, Fera; Awitdrus, Awitdrus; Ramli, Muhamad Adam; Umar, Akrajas Ali

doi:10.1016/j.physe.2019.03.001

Cited by 20 publications

(4 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of these elements, Cu appears to be the most promising doping species, since it can yield either n-type or p-type doping inside a ZnO matrix, depending upon the synthetic conditions. For instance, Park et al [22] theoretically predicted p-type behavior for the Cu-doped ZnO. On the contrary, Buchholz et al [23], in a later study, observed both p-as well as n-type behaviors in Cu-ZnO structures.…”

Section: Introductionmentioning

confidence: 95%

Preparation and Characterization of Cu and Al Doped ZnO Thin Films for Solar Cell Applications

et al. 2022

View full text Add to dashboard Cite

The Al- and Cu-doped ZnO nanostructured films in this study were deposited using a sputtering technique. Investigations based on X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, Hall effect measurements, and optical transmission spectroscopy was performed to analyze the structural, electrical, and optical characteristics of the prepared Al–ZnO and Cu–ZnO nanostructured films. The analyses show that doping results in enhanced conductivity as well as improved mobility in Al–ZnO and Cu–ZnO films in comparison to pure ZnO films. The Al- and Cu-doped ZnO films exhibited low resistivity (2.9 × 10−4 Ω cm for Al–ZnO and 1.7 × 10−4 Ω cm for Cu–ZnO) along with an average transmittance of around 80% in the visible spectrum. Moreover, the optical bandgaps of undoped ZnO, Al–ZnO, and Cu–ZnO nanostructures were observed as 3.3, 3.28, and 3.24 eV, respectively. Finally, solar cells were assembled by employing ZnO nanostructured thin films as photoelectrodes, resulting in efficiencies of 0.492% and 0.559% for Al–ZnO- and Cu–ZnO-based solar cells, respectively.

show abstract

Section: Introductionmentioning

confidence: 95%

Preparation and Characterization of Cu and Al Doped ZnO Thin Films for Solar Cell Applications

et al. 2022

View full text Add to dashboard Cite

show abstract

“…When ZnO NRs act as an electron transport layer in photoelectric devices, these defects can easily lead to the serious recombination of electrons and holes, increasing surface contact resistance and inducing low device performance [ 14 ]. To overcome the rapid recombination of electrons and holes, it was reported that surface decoration with metal NPs such as Ag, Au and Pd is an effective way to reduce the surface defects of ZnO and improve the device performance in the fields of optoelectronics and sensing [ 15 , 16 , 17 ]. In recent years, LSPR provided a novel idea for improving the performance of photoelectric detectors [ 17 , 18 , 19 ]; thus, it is of interest to contribute to enhance photodetection performance via the interaction between light and electron plasma waves at the metal particle surface.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of UV Photodetector of ZnO Nanorods Decorated with Al Nanoparticles

Shang¹,

Dong²,

Zhang³

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

In this work, localized surface plasmon resonance (LSPR) mediated by aluminum nanoparticles (Al NPs) was investigated to enhance the ultraviolet (UV) response of the zinc oxide nanorods (ZnO NRs) grown by the hydrothermal method. The ZnO NRs were characterized by scanning electron microscope, energy dispersive spectroscopy, X-ray diffractometer, Raman spectrometer, ultraviolet-visible spectrophotometer and fluorescence spectrometer. The results show that the morphology and crystalline structure of the ZnO NRs could not be changed before and after decoration with Al NPs, but the absorption rates in the UV range and the photoluminescence (PL) properties were improved. The photo-to-dark current ratio of ZnO NRs with Al NPs was about 447 for 325 nm UV light (5 mW/cm2) at 3.0 V bias, with the sensitivity increasing from 9.5 to 47.8, and the responsivity increasing from 53 to 267 mA/W.

show abstract

“…[25][26][27][28] Furthermore, the addition of NRs into NP system diminishes the resistance of charge transport. [29] Latest progress reports about deposition of thin films by functional NPs layer-by-layer with presence of amine and carboxylates. [30][31][32] Nevertheless, the multilayer formation with defined pattern and order control of variable metal oxide NPs and NRs is still absent.…”

Section: Introductionmentioning

confidence: 99%

A universal concept for area‐selective assembly of metal oxide core‐shell nanoparticles, nanorods, and organic molecules via amide coupling reactions

et al. 2022

View full text Add to dashboard Cite

The deposition of nanomaterials (NMs) on substrate is a pertinent for a variety of applications in nanometer-sized electronics, mechanics, or catalysis. This paper establishes a universal and simple approach for assembly of functionalized metal oxide core nanoparticles (NPs) and nanorods (NRs) on a substrate with uniformity, area-selectivity, and full order control. Particularly, the aluminium oxide (AlO x ) NPs, titanium dioxide (TiO 2 ) NRs, and TiO 2 NPs functionalized by selfassembled monolayer (SAM) molecules are deposited on substrate alternatively layer-by-layer. This assembling is performed in solution on the pre-patterned surface with SAM molecules via amide coupling reactions in order to achieve the reaction-orthogonality. Moreover, this stacking of inorganic NPs/NRs in a terminated implementation is progressed into latter layer of TiO 2 NPs functionalized by 1-aminopyrene molecules representing an example of hybrid organicinorganic formation with fluorescence emission. The deposited layers are characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM), and total internal reflection fluorescence microscope (TIRFM). The significant versatility of stacked metal oxide core-shell NPs/NRs via based-solution method represents excellent and efficient applicability in manufacture of hybrid organicinorganic nanostructure.

show abstract

Enhanced charge transfer activity in Au nanoparticles decorated ZnO nanorods photoanode

Cited by 20 publications

References 58 publications

Preparation and Characterization of Cu and Al Doped ZnO Thin Films for Solar Cell Applications

Preparation and Characterization of Cu and Al Doped ZnO Thin Films for Solar Cell Applications

Fabrication and Performance of UV Photodetector of ZnO Nanorods Decorated with Al Nanoparticles

A universal concept for area‐selective assembly of metal oxide core‐shell nanoparticles, nanorods, and organic molecules via amide coupling reactions

Contact Info

Product

Resources

About