Christopher S. Blackman
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View article: Spectroscopic Insight into the Role of Surface Oxygen Vacancies in the Detection of NO <sub>2</sub> in SnO <sub>2</sub> -Based Chemoresistive Gas Sensors
Spectroscopic Insight into the Role of Surface Oxygen Vacancies in the Detection of NO <sub>2</sub> in SnO <sub>2</sub> -Based Chemoresistive Gas Sensors Open
Despite widespread use of SnO2-based conductometric gas sensors, the sensing of NO2 remains poorly described on the atomic scale, limiting the design of next-generation sensors. Here, near-ambient-pressure X-ray photoelectron spectroscopy …
View article: A Higher-Yielding Route for the Synthesis of Molecular Precursors to Thin Films of Gold by Atomic Layer Deposition
A Higher-Yielding Route for the Synthesis of Molecular Precursors to Thin Films of Gold by Atomic Layer Deposition Open
A synthetically straightforward and high-yielding route to the series of complexes [AuMe2(dtc)] (dtc = dithiocarbamate) has been developed using dialkyl-, cyclic-dialkyl-, and diaryldithiocarbamate ligands. These compounds were screened by…
View article: Interplay between CO and Surface Lattice Oxygen Ions in the Vacancy-Mediated Response Mechanism of SnO<sub>2</sub>-Based Gas Sensors
Interplay between CO and Surface Lattice Oxygen Ions in the Vacancy-Mediated Response Mechanism of SnO<sub>2</sub>-Based Gas Sensors Open
Despite having been commercially available for more than half a century, conductometric gas sensors still lack a definite description of their operation mechanism, which hinders research into improving their characteristics. With the adven…
View article: A Novel Mechanism Based on Oxygen Vacancies to Describe Isobutylene and Ammonia Sensing of p-Type Cr2O3 and Ti-Doped Cr2O3 Thin Films
A Novel Mechanism Based on Oxygen Vacancies to Describe Isobutylene and Ammonia Sensing of p-Type Cr2O3 and Ti-Doped Cr2O3 Thin Films Open
Gas sensors based on metal oxide semiconductors (MOS) have been widely used for the detection and monitoring of flammable and toxic gases. In this paper, p-type Cr2O3 and Ti-doped Cr2O3 (CTO) thin films were synthesized using an aerosol-as…
View article: Tuneable Wetting of Fluorine‐Free Superhydrophobic Films via Titania Modification to Enhance Durability and Photocatalytic Activity
Tuneable Wetting of Fluorine‐Free Superhydrophobic Films via Titania Modification to Enhance Durability and Photocatalytic Activity Open
Superhydrophobic photocatalytic self‐cleaning films are fabricated via aerosol‐assisted chemical vapor deposition (AACVD). First, superhydrophobic/SiO 2 polymer films consisting of a combination of fatty acids, polydimethylsiloxane (PDMS) …
View article: Environment-Driven Variability in Absolute Band Edge Positions and Work Functions of Reduced Ceria
Environment-Driven Variability in Absolute Band Edge Positions and Work Functions of Reduced Ceria Open
The absolute band edge positions and work function (Φ) are the key electronic properties of metal oxides that determine their performance in electronic devices and photocatalysis. However, experimental measurements of these properties ofte…
View article: Zinc Oxide Nanostructure Deposition into Sub-5 nm Vertical Mesopores in Silica Hard Templates by Atomic Layer Deposition
Zinc Oxide Nanostructure Deposition into Sub-5 nm Vertical Mesopores in Silica Hard Templates by Atomic Layer Deposition Open
Nanostructures synthesised by hard-templating assisted methods are advantageous as they retain the size and morphology of the host templates which are vital characteristics for their intended applications. A number of techniques have been …
View article: Solid Electrolyte Interphase Formation in Tellurium Iodide Perovskites during Electrochemistry and Photoelectrochemistry
Solid Electrolyte Interphase Formation in Tellurium Iodide Perovskites during Electrochemistry and Photoelectrochemistry Open
Halide perovskites are promising photoelectrocatalytic materials. Their further development requires understanding of surface processes during electrochemistry. Thin films of tellurium-based vacancy-ordered perovskites with formula A2TeI6,…
View article: A Single-Step Route to Robust and Fluorine-Free Superhydrophobic Coatings via Aerosol-Assisted Chemical Vapor Deposition
A Single-Step Route to Robust and Fluorine-Free Superhydrophobic Coatings via Aerosol-Assisted Chemical Vapor Deposition Open
Robust fluorine-free superhydrophobic films were produced from a mixture of two fatty acids (stearic acid and palmitic acid), SiO2 nanoparticles, and polydimethylsiloxane. These simple and nontoxic compounds were deposited via aerosol-assi…
View article: Facile synthesis of Ag nanoparticles-decorated WO3 nanorods and their application in O2 sensing
Facile synthesis of Ag nanoparticles-decorated WO3 nanorods and their application in O2 sensing Open
Here we describe a two-step aerosol-assisted chemical vapour deposition (AACVD) synthesis method for the fabrication of Ag nanoparticles (NPs) decorated WO3 nanorods (NRs), evaluating the use of different organometallic silver precursors. …
View article: Direct <i>in situ</i> spectroscopic evidence of the crucial role played by surface oxygen vacancies in the O<sub>2</sub>-sensing mechanism of SnO<sub>2</sub>
Direct <i>in situ</i> spectroscopic evidence of the crucial role played by surface oxygen vacancies in the O<sub>2</sub>-sensing mechanism of SnO<sub>2</sub> Open
NAP-XPS characterisation of SnO 2 under operando conditions shows that resistance change, band bending and surface O-vacancy concentration are correlated with ambient O 2 concentration, challenging current preconceptions of gas sensor func…
View article: Atomistic Descriptions of Gas-Surface Interactions on Tin Dioxide
Atomistic Descriptions of Gas-Surface Interactions on Tin Dioxide Open
Historically, in gas sensing literature, the focus on “mechanisms” has been on oxygen species chemisorbed (ionosorbed) from the ambient atmosphere, but what these species actually represent and the location of the adsorption site on the su…
View article: CCDC 1978578: Experimental Crystal Structure Determination
CCDC 1978578: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Robust Protection of III–V Nanowires in Water Splitting by a Thin Compact TiO<sub>2</sub> Layer
Robust Protection of III–V Nanowires in Water Splitting by a Thin Compact TiO<sub>2</sub> Layer Open
Narrow-band-gap III-V semiconductor nanowires (NWs) with a suitable band structure and strong light-trapping ability are ideal for high-efficiency low-cost solar water-splitting systems. However, due to their nanoscale dimension, they suff…
View article: Chemical vapour deposition (CVD) of nickel oxide using the novel nickel dialkylaminoalkoxide precursor [Ni(dmamp′)<sub>2</sub>] (dmamp′ = 2-dimethylamino-2-methyl-1-propanolate)
Chemical vapour deposition (CVD) of nickel oxide using the novel nickel dialkylaminoalkoxide precursor [Ni(dmamp′)<sub>2</sub>] (dmamp′ = 2-dimethylamino-2-methyl-1-propanolate) Open
We describe CVD of nickel oxide (NiO) thin films using a new precursor [Ni(dmamp′)2], synthesised using a readily commercially available dialkylaminoalkoxide ligand (dmamp′), which is applied to synthesis of a hole transport-electron block…
View article: Robust Protection of III-V Nanowires in Water Splitting by a Thin Compact TiO$_2$ Layer
Robust Protection of III-V Nanowires in Water Splitting by a Thin Compact TiO$_2$ Layer Open
Narrow-bandgap III-V semiconductor nanowires (NWs) with a suitable band structure and strong light-trapping ability are ideal for high-efficiency low-cost solar water-splitting systems. However, due to their nanoscale dimension, they suffe…
View article: Comparative study of spin-coated and vapour deposited nickel oxides for detecting VOCs
Comparative study of spin-coated and vapour deposited nickel oxides for detecting VOCs Open
Nickel oxide (p-type) sensors are developed to detect volatile organic compounds (VOCs). In the presented work, NiO sensors are fabricated and tested towards acetone, ethanol, toluene, hexane, methanol, and n-propanol vapours between 5 to …
View article: Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO <sub>2</sub>
Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO <sub>2</sub> Open
Transparent conducting oxides (TCOs) are ubiquitous in modern consumer electronics. SnO2 is an earth abundant, cheaper alternative to In2O3 as a TCO. However, its performance in terms of mobilities and conductivities lags behind that of In…
View article: Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO2
Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO2 Open
Transparent conducting oxides (TCOs) are ubiquitous in modern consumer electronics. SnO2 is an earth abundant, cheaper alternative to In2O3 as a TCO however, its performance in terms of electrical properties lags behind that of In2O3. Base…
View article: Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO2
Resonant Ta Doping for Enhanced Mobility in Transparent Conducting SnO2 Open
Transparent conducting oxides (TCOs) are ubiquitous in modern consumer electronics. SnO 2 is an earth abundant, cheaper alternative to In 2 O 3 as a TCO however, its performance in terms of electrical properties lags behind that of In 2 O …
View article: Surface Oxygen Vacancies: Dynamics of Photo‐Induced Surface Oxygen Vacancies in Metal‐Oxide Semiconductors Studied Under Ambient Conditions (Adv. Sci. 22/2019)
Surface Oxygen Vacancies: Dynamics of Photo‐Induced Surface Oxygen Vacancies in Metal‐Oxide Semiconductors Studied Under Ambient Conditions (Adv. Sci. 22/2019) Open
Surface oxygen vacancy defects are some of the most reactive sites but are notoriously difficult to detect, often healing upon exposure to air. In article number https://doi.org/10.1002/advs.201901841, Ivan P. Parkin, Stefan A. Maier, and …
View article: Dynamics of Photo‐Induced Surface Oxygen Vacancies in Metal‐Oxide Semiconductors Studied Under Ambient Conditions
Dynamics of Photo‐Induced Surface Oxygen Vacancies in Metal‐Oxide Semiconductors Studied Under Ambient Conditions Open
Surface‐enhanced Raman spectroscopy (SERS) is a powerful analytical technique commonly used in the detection of traces of organic molecules. The mechanism of SERS is of a dual nature, with Raman scattering enhancements due to a combination…
View article: A Multi-MOx Sensor Approach to Measure Oxidizing and Reducing Gases
A Multi-MOx Sensor Approach to Measure Oxidizing and Reducing Gases Open
This report summarizes our recent work on a p-type/n-type Multi-MOx gas sensor platform for simultaneously measuring oxidizing and reducing gases.