This study presents a zinc oxide (ZnO) film deposited on a glass substrate by ultrasonic spraying pyrolysis. The ZnO nanostructure was formed by treating the as-deposited ZnO films with hydrogen. The root-mean-square (RMS) roughness increases from 5.83 nm to 12.53 nm during the treatment for 20 min, but slightly decreases to 11.87 nm at a treatment time of 30 min. In the range 400-500 nm, the t...

Background : Zinc oxide (ZnO) is a wide, direct band gap II-VI oxide semiconductor. ZnO has large exciton binding energy at room temperature, and it is a good host material for obtaining visible and infrared emission of various rare-earth ions. Methods : Europium oxide (Eu2O3) doped ZnO films are prepared on quartz substrate using radio frequency (RF) magnetron sputtering with doping concentrat...

Al-doped ZnO (AZO) thin films with various Al concentrations were synthesized on Si(001) substrates with native oxide layers by atomic layer deposition process. The effects of the Al concentration on the microstructural characteristics of the AZO thin films grown at 250 degrees C and the correlation between their microstructural characteristics and electrical properties of the AZO thin films we...

H was intentionally incorporated into as-deposited ZnO films by plasma exposure treatment. The resistivity of ZnO films was reduced to the order of 10(-3) Ω cm after H plasma treatment, and high conductive stability was identified using a post-annealing process. To find an explanation for the stable conductivity, first-principle calculation was performed. Results predicted that H atoms trapped ...

Thin films comprising semiconductor nanocrystals are emerging for applications in electronic and optoelectronic devices including light emitting diodes and solar cells. Achieving high charge carrier mobility in these films requires the identification and elimination of electronic traps on the nanocrystal surfaces. Herein, we show that in films comprising ZnO nanocrystals, an electron acceptor t...

We report a rapid, self-catalyzed, solid precursor-based thermal plasma chemical vapor deposition process for depositing a conformal, nonporous, and optically transparent nanocrystalline ZnO thin film at 130 Torr (0.17 atm). Pure solid zinc is inductively heated and melted, followed by ionization by thermal induction argon/oxygen plasma to produce conformal, nonporous nanocrystalline ZnO films ...

In this study, cellulose nanocrystals/zinc oxide (CNCs/ZnO) nanocomposites were dispersed as bifunctional nano-sized fillers into poly(vinyl alcohol) (PVA) and chitosan (Cs) blend by a solvent casting method to prepare PVA/Cs/CNCs/ZnO bio-nanocomposites films. The morphology, thermal, mechanical and UV-vis absorption properties, as well antimicrobial effects of the bio-nanocomposite films were ...

ZnO is a promising material suitable for variety of novel electronic applications including sensors, transistors, and solar cells. Intrinsic ZnO film has inferiority in terms of electronic properties, which has prompted researches and investigations on doped ZnO films in order to improve its electronic properties. In this work, aluminum (Al) doped ZnO (AZO) with various concentrations and undop...

Different layered ZnO/MEH:PPV composite solar cells have been fabricated to assess the role of the ZnO backing layer on the open circuit voltage of nanowire composite solar cells. Comparisons between cells using a ZnO layer prepared by spray pyrolysis and by sputtering and oxidising a Zn layer are compared. Cells with a sputtered Zn layer which is then oxidised show a significantly improved ope...

We report substantially enhanced photoluminescence (PL) from hybrid structures of graphene/ZnO films at a band gap energy of ZnO (∼3.3  eV/376  nm). Despite the well-known constant optical conductivity of graphene in the visible-frequency regime, its abnormally strong absorption in the violet-frequency region has recently been reported. In this Letter, we demonstrate that the resonant excitatio...