Preparation and photoluminescence of alumina membranes with ordered pore arrays

Du, Youwei; Cai, Wei; Mo, Chimei; Chen, J.; Zhang, L. D.; Zhu, Xin‐Guang

doi:10.1063/1.123976

Cited by 235 publications

(188 citation statements)

References 9 publications

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“…The presence of oxygen vacancies has generally been considered to be responsible for the PL of anodic alumina (8, 9). Du et al (8) and Li et al (9) have attributed the blue emission band to singly ionized oxygen vacancies (F + centres) in AAMs formed in oxalic acid solution. In crystalline Al 2 O 3 , it has been shown experimentally that the F + centre can emit a PL peak at about 413 nm (3.0 eV) (16,17).…”

Section: Experimental Results and Analysesmentioning

confidence: 99%

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Huang

2007

Luminescence

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Photoluminescence (PL) of anodic alumina membranes (AAMs) with ordered nanopore arrays fabricated in oxalic acid has been investigated under different annealing temperatures. X-ray diffraction reveals the structural transition from the amorphous state to crystallization. PL measurements show that a blue PL band occurs in the wavelength range 300-600 nm. The differential thermal analysis (DTA) and thermogravimetric analysis (TG) results revealed plentiful oxalic ions incorporated into the prepared AAMs. The PL band of AAMs could be attributed to the co-actions of the oxygen vacancies (F(+) and F centres) and the luminescent centres transformed from oxalic impurities. With the increase of the annealing temperature, the intensities of PL increase first, and at 500 degrees C reach a maximum value, then decrease. The PL phenomenon is intimately related to the temperature-induced structural transitions. There are three optical centres in the annealed AAMs; the first is originates from the F centres, the second is correlated with F(+) centres and the third is associated with the oxalic impurities incorporated in the AAMs.

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Section: Experimental Results and Analysesmentioning

confidence: 99%

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Huang

2007

Luminescence

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“…Several methods have been used to confine or impregnate dyes in APA cavities [13]. Spectroscopic investigations are of use for in the confinement studies also of dye molecules [14][15][16][17]. The present work aimed to confirm that APA surface able to host macromolecules in to its pores.…”

Section: Fluorescence Intensity Measurementsmentioning

confidence: 51%

Protein Confinement in the Anodic Porous Alumina Microarray

Larosa¹,

Fiordoro²,

Nicolini³

et al. 2017

NanoWorld J

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Alternative approaches to solve the complexity of protein function in the proteomic field required new arrays in nano-micro-scale dimension. Anodic Porous Alumina (APA), a geometrically ordered inorganic oxide, grown from ultrapure aluminum by anodic oxidation, was used in this work as an ordered array for the confinement of protein molecules by spin-coating technique. This microor nanostructured material can be used in different ways, both for the traditional fluorescence approach and for novel label-free methods. The aim of the present study is the proof of principle that the protein molecules can enter the APA micropores, as shown by fluorescein-labeled lysozyme confined into the APA template. Fluorescence intensity measurement as well as Raman Spectroscopy confirm that protein was incorporated into the APA micropores.

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“…400 ∼ 600 nm range has been obtained with a maximum at about 450 nm. 15 Itou et al reported that PL emission bands centered at 330, 413 and 503 nm originate from F + (an oxygen vacancy occupied by one electron), F (an oxygen vacancy occupied by two electrons) and F 2 (an oxygen divacancy with four electrons) centers, respectively, in α-Al 2 O 3 nanostructures. 16 PL spectra from anodic alumina membranes exhibited two emission bands at around 405 and 455 nm, associated with F and F + centers, respectively.…”

Section: Resultsmentioning

confidence: 99%

Post deposition annealing effect on the properties of Al2O3/InP interface

Kim

Choi

2018

AIP Advances

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Post deposition in-situ annealing effect on the interfacial and electrical properties of Au/Al2O3/n-InP junctions were investigated. With increasing the annealing time, both the barrier height and ideality factor changed slightly but the series resistance decreased significantly. Photoluminescence (PL) measurements showed that the intensities of both the near band edge (NBE) emission from InP and defect-related bands (DBs) from Al2O3 decreased with 30 min annealing. With increasing the annealing time, the diffusion of oxygen (indium) atoms into Al2O3/InP interface (into Al2O3 layer) occurred more significantly, giving rise to the increase of the interface state density. Therefore, the out-diffusion of oxygen atoms from Al2O3 during the annealing process should be controlled carefully to optimize the Al2O3/InP based devices.

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Preparation and photoluminescence of alumina membranes with ordered pore arrays

Cited by 235 publications

References 9 publications

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

The effect of high‐temperature annealing on optical properties of porous anodic alumina formed in oxalic acid

Protein Confinement in the Anodic Porous Alumina Microarray

Post deposition annealing effect on the properties of Al2O3/InP interface

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