121 citations · 543 across the 11 of their papers we have counts for
11 papers
Large diameter TiO nanotubes enable integration of conformed hierarchical and blocking layers for enhanced dye-sensitized solar cell efficiency
Abdelhamid Elzarka, Ning Liu, Imgon Hwang +2
In the present work we grow anodic TiO nanotube layer with tube diameter ~ 500 nm and an open tube mouth. We use this morphology in dye-sensitized solar cells (DSSCs) and show…
Highly Conducting Spaced TiO Nanotubes Enable Defined Conformal Coating with Nanocrystalline NbO and High Performance Supercapacitor Applications
Selda Ozkan, Nhat Truong Nguyen, Imgon Hwang +2
In this work, we report on the electrochemical behavior of nitrided spaced TiO nanotubes conformally coated with a nanocrystalline NbO layer and find for these hierarch…
Effect of Low Oxygen Annealing on Photoelectrochemical Water Splitting Properties of -FeO
Yoichi Makimizu, Nhat Truong Nguyen, Hyo-Jin Ahn +4
Photoelectrochemical (PEC) water splitting is a promising method for conversing solar energy into chemical energy stored in the form of hydrogen. Nanostructured hematite (-Fe$_2…
Magneli phases doped with Pt for photocatalytic hydrogen evolution
Ewa Wierzbicka, Maximilian Domaschke, Nikita Denisov +8
Defined substoichiometric titanium oxides (TiO with ) called Magneli phases have been investigated mostly for their unusual high conductivity and metal-lik…
Spaced TiO Nanotube Arrays Allow for High Performance Hierarchical Supercapacitor Structure
Nhat Truong Nguyen, Selda Ozkan, Imgon Hwang +2
In this work we describe the synthesis and electrochemical properties of nitridated hierarchical TiO nanotubes as an electrode for supercapacitors. The hierarchical TiO nan…
Black Magic in Gray Titania: Noble-Metal-Free Photocatalytic H2 Evolution from Hydrogenated Anatase
Ning Liu, Xuemei Zhou, Nhat Truong Nguyen +5
"Black" TiO2 has gained increasing interest because of its outstanding properties and promising applications in a wide range of fields. Among the outstanding features of the materi…
Electrical Transport Properties of Polycrystalline and Amorphous TiO2 Single Nanotubes
Markus Stiller, Jose Barzola-Quiquia, Pablo Esquinazi +5
The electrical transport properties of anodically grown TiO2 nanotubes was investigated. Amorphous nanotubes were anodically grown on titanium foil and transformed through annealin…
TiO2 nanotubes with laterally spaced ordering enable optimized hierarchical structures with significantly enhanced photocatalytic H2 generation
Nhat Truong Nguyen, Selda Ozkan, Imgon Hwang +2
In the present work we grow self-organized TiO2 nanotube arrays with a defined and controlled regular spacing between individual nanotubes. These defined intertube gaps allow to bu…
Hierarchical DSSC structures based on single walled TiO2 nanotube arrays reach back-side illumination solar light conversion efficiency of 8%
Seulgi So, Imgon Hwang, Patrik Schmuki
In the present work we introduce a path to the controlled construction of DSSCs based on hierarchically structured single walled, self-organized TiO2 layers. In a first step we des…
Single-walled TiO2 Nanotubes: Enhanced Carrier-transport Properties by TiCl4-Treatment
Imgon Hwang, Seulgi So, Mohamed Mokhtar +4
In the present work we report significant enhancement of the photoelectrochemical properties of self-organized TiO2 nanotubes by a combined de-coring of classic nanotubes followed…
Tantalum nitride nanotube photoanodes: establishing a beneficial back-contact by lift-off and transfer to titanium nitride layer
Lei Wang, Anca Mazare, Imgon Hwang +1
In this work we introduce the use of TiN/Ti2 N layers as a back contact for lifted-off membranes of anodic Ta3N5 nanotube layers. In photoelectrochemical H2 generation experiments…