Investigations into the structure, reactivity, and AACVD of aluminium and gallium amidoenoate complexes

Mears, Kristian L.; Bhide, Malavika A.; Knapp, Caroline E.; Carmalt, Claire J.

doi:10.1039/d1dt03365d

Cited by 3 publications

(3 citation statements)

References 67 publications

(68 reference statements)

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“…For single source precursors, it has been stipulated that the oxygen content in the film can be controlled by the weight % of oxygen in the precursor. [6,27] From a precursor design perspective, this relationship can be easily investigated by changing the elemental composition of the ligand and observing the effects of this on the properties of the resultant films. However, estimating oxygen content of films deposited on glass is difficult as oxygen content calculated from analytical techniques also takes into account the oxygen content of the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…For oxide materials, oxygen content of the films can have large effects on optoelectronic properties and finding a way to control this on a molecular level is the basis of good precursor design. For single source precursors, it has been stipulated that the oxygen content in the film can be controlled by the weight% of oxygen in the precursor [6,27] . From a precursor design perspective, this relationship can be easily investigated by changing the elemental composition of the ligand and observing the effects of this on the properties of the resultant films.…”

Section: Introductionmentioning

confidence: 99%

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Ethyl Zinc β‐Ketoiminates and β‐Amidoenoates: Influence of Precursor Design on the Properties of Highly Conductive Zinc Oxide Thin Films from Aerosol‐Assisted Chemical Vapour Deposition.

2022

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Highly transparent (> 85 %) and conductive (1.086 × 10 À 3 Ω cm) zinc oxide thin films have been deposited from specifically selected precursors allowing us to establish a direct correlation between their molecular structure and the optoelectronic properties of the deposited films. Mono-ligated ethyl zinc compounds of varying steric bulk: [EtZn(OC(Me)CH(Me)N( i Pr))] 2 (1), [EtZn(OC(OEt)CH(Me)N( i Pr))] 2 (2) and [EtZn(OC(OEt)CH-H(CH 3 )N(Dipp))] 2 (3) were compared with the related bis-ligated zinc complexes [Zn(OC(Me)CH(Me)N( i Pr)) 2 ] (4), [Zn(OC(OEt)CH-(Me)N( i Pr)) 2 ] (5) and [Zn(OC(OEt)CH(Me)N(Dipp)) 2 ] (6). In all cases bulkier ligands resulted in poorer electronic properties of deposited films, whilst all mono-ligated compounds were shown as superior precursors. All complexes were characterised by 1 H and 13 C{ 1 H} NMR and elemental analysis, with the structure of 6 determined by single crystal X-ray diffraction. Zinc oxide films were deposited from single and dual source (with methanol) reactions of these precursors, and analysed via XRD, XPS and EDX. Optoelectronic properties were investigated through UV/vis spectroscopy and Hall effect measurements, and morphology was examined via SEM. Tauc plots from UV/vis data indicated that Film A showed the lowest band gap of 3.31 eV. Varying the elemental composition of the precursors led to changes in the elemental composition of the resultant films, as well as changes in their structural and optoelectronic properties. Using this approach of precursor design, we have been able to tune single source precursors towards zinc oxide to deposit films with specific properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ethyl Zinc β‐Ketoiminates and β‐Amidoenoates: Influence of Precursor Design on the Properties of Highly Conductive Zinc Oxide Thin Films from Aerosol‐Assisted Chemical Vapour Deposition.

2022

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“…Much research is being carried out in the search for suitable deposition precursors and methods for functional materials that pose challenges due to their peculiar chemical properties such as geometry, reactivity, solubility e.t.c. [7,[13][14][15][16][17][18][19][20][21][22]. There is growing interest in special-group functionalized polymers, which ample literature evidence suggests are strong candidates for opto-electronics applications [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

ZnO-doped PFPAMA: a novel transparent conducting polymer for fast photodiodes

Ocaya

Erol

Al‐Sehemi

et al. 2022

J Mater Sci: Mater Electron

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In this article, a new Schottky diode based on a transparent conducting polymer 2-(4-fluorophenyl)-2-oxoethyl-2-methylprop-2-enoate (PFPAMA) that is doped up to 5% with ZnO is presented. PFPAMA A novel conducting polymer-based diode is a promising transparent polymer that is inclined towards n-type behavior with the potential to be used as an electron transport layer. Each device had the Al/p-Si:(PFPAMA:ZnO)/Al structure. The diode ideality factor was found to depend on bias and illumination but the calculated interface state density is lower than for most reported Al/p-Si diodes, suggesting that the presence of the polymer suppresses interface states. The measured electrical and photo response characteristics confirm that the resulting diodes are suitable for fast photodiodes over the intensity range of dark to 100 mW/cm 2 whose performance is optimizable by ZnO doping.

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ZnO-doped PFPAMA: a novel transparent conducting polymer for fast photodiodes

Ocaya

Erol

Al‐Sehemi

et al. 2022

Preprint

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In this article, a new Schottky diode based on a transparent conducting polymer 2-(4-fluorophenyl)-2-oxoethyl-2-methylprop-2-enoate (PFPAMA) that is doped up to 5% with ZnO is presented. PFPAMA is a promising transparent polymer that is inclined towards n-type behavior with the potential to be used as an electron transport layer. Each device had the Al/p-Si:(PFPAMA:ZnO)/Al structure. The diode ideality factor was found to depend on bias and illumination but the calculated interface state density is lower than for most reported Al/p-Si diodes, suggesting that the presence of the polymer suppresses interface states. The measured electrical and photo response characteristics confirm that the resulting diodes are suitable for fast photodiodes over the intensity range of dark to 100 mW/cm2 whose performance is optimizable by ZnO doping.

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Investigations into the structure, reactivity, and AACVD of aluminium and gallium amidoenoate complexes

Abstract: Amidoenoate complexes of Al and Ga have been synthesised and their coordination chemistry studied in relation to precursor stability. A selection of the complexes were used in aerosol assisted CVD to deposit thin films of Al2O3 and Ga2O3.

Cited by 3 publications

References 67 publications

Ethyl Zinc β‐Ketoiminates and β‐Amidoenoates: Influence of Precursor Design on the Properties of Highly Conductive Zinc Oxide Thin Films from Aerosol‐Assisted Chemical Vapour Deposition.

Ethyl Zinc β‐Ketoiminates and β‐Amidoenoates: Influence of Precursor Design on the Properties of Highly Conductive Zinc Oxide Thin Films from Aerosol‐Assisted Chemical Vapour Deposition.

ZnO-doped PFPAMA: a novel transparent conducting polymer for fast photodiodes

ZnO-doped PFPAMA: a novel transparent conducting polymer for fast photodiodes

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