Chang‐Ming Jiang
YOU?
Author Swipe
View article: Oxygen Incorporation as a Route to Nondegenerate Zinc Nitride Semiconductor Thin Films
Oxygen Incorporation as a Route to Nondegenerate Zinc Nitride Semiconductor Thin Films Open
Zinc nitride (Zn3N2) comprises earth-abundant elements, possesses a small direct bandgap, and is characterized by high electron mobility. While these characteristics make the material a promising compound semiconductor for various optoelec…
View article: Collective Motion of Methylammonium Cations Affects Phase Transitions and Self-Trapped Exciton Emission in A-Site Engineered MAPbI3 Films
Collective Motion of Methylammonium Cations Affects Phase Transitions and Self-Trapped Exciton Emission in A-Site Engineered MAPbI3 Films Open
Hybrid organic-inorganic halide perovskites are celebrated for their exceptional optoelectronic properties and facile fabrication processes, making them prime candidates for next-generation photovoltaic and optoelectronic devices. By incor…
View article: Collective motion of methylammonium cations affects phase transitions and self-trapped exciton emission in A-site engineered MAPbI <sub>3</sub> films
Collective motion of methylammonium cations affects phase transitions and self-trapped exciton emission in A-site engineered MAPbI <sub>3</sub> films Open
The incorporation of less polar ethylenediammonium (en 2+ ) into the A-site of MAPbI 3 interrupts the dipole–dipole interaction between MA + cations, consequently affecting the phase stability and destabilizing self-trapped excitons.
View article: Collective Motion of Methylammonium Cations Affects Phase Transition and Self-Trapped Exciton Emission in MAPbI3 Films
Collective Motion of Methylammonium Cations Affects Phase Transition and Self-Trapped Exciton Emission in MAPbI3 Films Open
Hybrid organic-inorganic halide perovskites are celebrated for their exceptional optoelectronic properties and facile fabrication methods, making them prime candidates for next-generation photovoltaic and optoelectronic devices. However, t…
View article: Collective Motion of Methylammonium Cations Affects Phase Transition and Self-Trapped Exciton Emission in MAPbI3 Films
Collective Motion of Methylammonium Cations Affects Phase Transition and Self-Trapped Exciton Emission in MAPbI3 Films Open
Hybrid organic-inorganic halide perovskites are celebrated for their exceptional optoelectronic properties and facile fabrication methods, making them prime candidates for next-generation photovoltaic and optoelectronic devices. However, t…
View article: Bixbyite‐Type Zirconium Tantalum Oxynitride Thin Films as Composition‐Tunable High Refractive Index Semiconductors
Bixbyite‐Type Zirconium Tantalum Oxynitride Thin Films as Composition‐Tunable High Refractive Index Semiconductors Open
Multinary nitrides and oxynitrides offer a range of tunable structural and optoelectronic properties. However, much of this vast compositional space remains to be explored due to the challenges associated with their synthesis. Here, reacti…
View article: Unraveling Defect-Dependent Conductivity-Type Switching in CuFe2O4 for Enhanced Photoelectrocatalytic Reduction of Benzaldehyde
Unraveling Defect-Dependent Conductivity-Type Switching in CuFe2O4 for Enhanced Photoelectrocatalytic Reduction of Benzaldehyde Open
Photoelectrocatalytic (PEC) reduction of carbonyl-containing compounds provides a sustainable approach to upgrading biomass-derived feedstocks with reduced energy requirements. However, PEC reduction has primarily focused on hydrogen evolu…
View article: Beyond Cation Disorder: Site Symmetry‐Tuned Optoelectronic Properties of the Ternary Nitride Photoabsorber ZrTaN<sub>3</sub>
Beyond Cation Disorder: Site Symmetry‐Tuned Optoelectronic Properties of the Ternary Nitride Photoabsorber ZrTaN<sub>3</sub> Open
Ternary nitrides are rapidly emerging as promising compounds for optoelectronic and energy conversion applications, yet comparatively little of this vast composition space has been explored. Furthermore, the crystal structures of these com…
View article: The Critical Role of Anharmonic Lattice Dynamics for Macroscopic Properties of the Visible Light Absorbing Nitride Semiconductor CuTaN<sub>2</sub> (Adv. Energy Mater. 19/2024)
The Critical Role of Anharmonic Lattice Dynamics for Macroscopic Properties of the Visible Light Absorbing Nitride Semiconductor CuTaN<sub>2</sub> (Adv. Energy Mater. 19/2024) Open
Solar Energy Harvesting In article number 2303059, Omer Yaffe, Ian D. Sharp, David A. Egger, and co-workers uncover pronounced anharmonic vibrational effects in the ternary nitride semiconductor, CuTaN2. These dynamic structural characteri…
View article: Zirconium Oxynitride Thin Films for Photoelectrochemical Water Splitting
Zirconium Oxynitride Thin Films for Photoelectrochemical Water Splitting Open
Transition metal oxynitrides are a promising class of functional materials for photoelectrochemical (PEC) applications. Although these compounds are most commonly synthesized via ammonolysis of oxide precursors, such synthetic routes often…
View article: The Critical Role of Anharmonic Lattice Dynamics for Macroscopic Properties of the Visible Light Absorbing Nitride Semiconductor CuTaN<sub>2</sub>
The Critical Role of Anharmonic Lattice Dynamics for Macroscopic Properties of the Visible Light Absorbing Nitride Semiconductor CuTaN<sub>2</sub> Open
Ternary nitride semiconductors are rapidly emerging as a promising class of materials for energy conversion applications, offering an appealing combination of strong light absorption in the visible range, desirable charge transport charact…
View article: Elucidating the Epitaxial Growth Mechanisms of Solution-Derived BiVO <sub>4</sub> Thin Films Utilizing Rapid Thermal Annealing
Elucidating the Epitaxial Growth Mechanisms of Solution-Derived BiVO <sub>4</sub> Thin Films Utilizing Rapid Thermal Annealing Open
Photoelectrochemical water splitting is regarded as a promising strategy for solar energy conversion, but the efficacy of metal oxide photoelectrodes is significantly limited by suboptimal charge transport. In this regard, epitaxial BiVO4 …
View article: Elucidating the Epitaxial Growth Mechanisms of Solution-Derived BiVO4 Thin Films Utilizing Rapid Thermal Annealing
Elucidating the Epitaxial Growth Mechanisms of Solution-Derived BiVO4 Thin Films Utilizing Rapid Thermal Annealing Open
Photoelectrochemical water splitting is regarded as a promising strategy for solar energy conversion. Nevertheless, the overall energy conversion efficiency achieved by metal oxide photoelectrodes has shown significant limitations because …
View article: The effect of solid solution temperature on the precipitation phase and properties of plasma arc welded joints of Inconel625 high temperature alloy
The effect of solid solution temperature on the precipitation phase and properties of plasma arc welded joints of Inconel625 high temperature alloy Open
The effect of solid solution temperature on microstructure and mechanical properties of plasma welded nickel-based high temperature alloy Incone l625 was investigated by solid solution treatment (The solid solution temperature range is 950…
View article: Designing Multifunctional Cobalt Oxide Layers for Efficient and Stable Electrochemical Oxygen Evolution
Designing Multifunctional Cobalt Oxide Layers for Efficient and Stable Electrochemical Oxygen Evolution Open
Disordered and porous metal oxides are promising earth‐abundant and cost‐effective alternatives to noble‐metal electrocatalysts. Herein, nonsaturated oxidation in plasma‐enhanced atomic layer deposition is leveraged to tune the structural,…
View article: Designing multifunctional CoOx layers for efficient and stable electrochemical energy conversion
Designing multifunctional CoOx layers for efficient and stable electrochemical energy conversion Open
Disordered and porous metal oxides are promising as earth-abundant and cost-effective alternatives to noble-metal electrocatalysts. Herein, we leverage non-saturated oxidation in plasma-enhanced atomic layer deposition to tune structural, …
View article: Solution-based synthesis of wafer-scale epitaxial BiVO<sub>4</sub> thin films exhibiting high structural and optoelectronic quality
Solution-based synthesis of wafer-scale epitaxial BiVO<sub>4</sub> thin films exhibiting high structural and optoelectronic quality Open
Epitaxial, (010)-oriented BiVO 4 films on 2′′ wafers synthesized by spin-coating and metalorganic decomposition exhibit remarkably high crystal quality. Spectroscopy reveals a large uniaxial optical anisotropy, confirming theoretical predi…
View article: Aluminum Oxide at the Monolayer Limit via Oxidant‐Free Plasma‐Assisted Atomic Layer Deposition on GaN
Aluminum Oxide at the Monolayer Limit via Oxidant‐Free Plasma‐Assisted Atomic Layer Deposition on GaN Open
Atomic layer deposition (ALD) is an essential tool in semiconductor device fabrication that allows the growth of ultrathin and conformal films to precisely form heterostructures and tune interface properties. The self‐limiting nature of th…
View article: Nanoscale Heterogeneities and Composition–Reactivity Relationships in Copper Vanadate Photoanodes
Nanoscale Heterogeneities and Composition–Reactivity Relationships in Copper Vanadate Photoanodes Open
The photoelectrochemical performance of thin film photoelectrodes can be impacted by deviations from the stoichiometric composition, both at the macroscale and at the nanoscale. This issue is especially pronounced for the class of ternary …
View article: CuBi<sub>2</sub>O<sub>4</sub>: Electronic Structure, Optical Properties, and Photoelectrochemical Performance Limitations of the Photocathode
CuBi<sub>2</sub>O<sub>4</sub>: Electronic Structure, Optical Properties, and Photoelectrochemical Performance Limitations of the Photocathode Open
As CuBi2O4 is an emerging p-type semiconductor for applications as a photocathode in photoelectrochemical (PEC) solar fuel production, there is much to be understood about the uniqueness and commonalities the material exhibits in compariso…
View article: Metastable Ta<sub>2</sub>N<sub>3</sub> with highly tunable electrical conductivity <i>via</i> oxygen incorporation
Metastable Ta<sub>2</sub>N<sub>3</sub> with highly tunable electrical conductivity <i>via</i> oxygen incorporation Open
Metastable Ta2N3 with bixbyite structure is directly deposited by reactive magnetron sputtering. Concerted experimental and computational efforts reveal the crucial role of oxygen impurity in both the synthesis and in tuning the electronic…
View article: Indirect bandgap, optoelectronic properties, and photoelectrochemical characteristics of high-purity Ta<sub>3</sub>N<sub>5</sub> photoelectrodes
Indirect bandgap, optoelectronic properties, and photoelectrochemical characteristics of high-purity Ta<sub>3</sub>N<sub>5</sub> photoelectrodes Open
The (opto)electronic properties of Ta 3 N 5 photoelectrodes are often dominated by defects, but precise control of these defects provides new insight into the electronic structure, photocarrier transport, and photoelectrochemical function.
View article: Electronic Structure and Performance Bottlenecks of CuFeO<sub>2</sub> Photocathodes
Electronic Structure and Performance Bottlenecks of CuFeO<sub>2</sub> Photocathodes Open
The path to realizing low-cost, stable, and earth-abundant photoelectrodes can be enabled through a detailed understanding of the optoelectronic properties of these materials by combining theory and experimental techniques. Of the limited …
View article: Interface engineering for light-driven water oxidation: unravelling the passivating and catalytic mechanism in BiVO<sub>4</sub> overlayers
Interface engineering for light-driven water oxidation: unravelling the passivating and catalytic mechanism in BiVO<sub>4</sub> overlayers Open
Artificial photosynthetic approaches require the combination of light absorbers interfaced with overlayers that enhance charge transport and collection to perform catalytic reactions.
View article: Physical Origins of the Transient Absorption Spectra and Dynamics in Thin-Film Semiconductors: The Case of BiVO<sub>4</sub>
Physical Origins of the Transient Absorption Spectra and Dynamics in Thin-Film Semiconductors: The Case of BiVO<sub>4</sub> Open
Transient absorption (TA) spectroscopy is uniquely suited for understanding kinetic processes initiated by light over vast ranges of time. In combination with white light probes, the recorded differential absorption spectra can contain spe…
View article: Composition-Dependent Functionality of Copper Vanadate Photoanodes
Composition-Dependent Functionality of Copper Vanadate Photoanodes Open
To understand functional roles of constituent elements in ternary metal oxide photoanodes, essential photoelectrochemical (PEC) properties are systematically analyzed on a series of copper vanadate compounds with different Cu:V elemental r…
View article: Quantification of the loss mechanisms in emerging water splitting photoanodes through empirical extraction of the spatial charge collection efficiency
Quantification of the loss mechanisms in emerging water splitting photoanodes through empirical extraction of the spatial charge collection efficiency Open
Extraction of the spatial collection efficiency allowsoperandoquantification of loss and charge transport mechanisms in new semiconductor materials.
View article: Electron dynamics in transition metal dichalcogenides utilizing attosecond transient absorption spectroscopy
Electron dynamics in transition metal dichalcogenides utilizing attosecond transient absorption spectroscopy Open
Strong enhancement of exciton binding has been observed in valence-excitons in the optical regime of 2D materials. We report direct observation of long-lived core-exciton states in transition metal dichalcogenides by attosecond transient a…
View article: Bioinspired Dimensional Transition: Structurally Deformed MoS<sub>2</sub> for Electrochemically Stable, Thermally Resistant, and Highly Efficient Hydrogen Evolution Reaction (Adv. Mater. 44/2017)
Bioinspired Dimensional Transition: Structurally Deformed MoS<sub>2</sub> for Electrochemically Stable, Thermally Resistant, and Highly Efficient Hydrogen Evolution Reaction (Adv. Mater. 44/2017) Open
A dimensional transition of 2D chemically exfoliated MoS2 into 3D structurally deformed crumpled nanostructures enables the modulation of the catalytic property, the improvement of the longterm operational stability, and the preservation o…