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Valley Hall phases in kagome lattices
(American Physical Society, 2019)
We report the finding of the analogous valley Hall effect in phononic systems arising from mirror symmetry
breaking, in addition to spatial inversion symmetry breaking. We study topological phases of plates and
spring-mass ...
Selective Growth of Layered Perovskites for Stable and Efficient Photovoltaics
(Royal Society of Chemistry, 2018-11)
Perovskite solar cells (PSCs) are promising alternatives toward clean energy because of their high-power
conversion efficiency (PCE) and low materials and processing cost. However, their poor stability under
operation ...
Counterbalance between Surface and Confinement Effects As Studied for Amino-Terminated Poly(propylene glycol) Constraint in Silica Nanopores
(American Chemical Society, 2019)
Broadband dielectric spectroscopy (BDS) and orthopositronium annihilation lifetime spectroscopy (PALS) are combined to study the
molecular dynamics and the free volume of poly(propylene glycol) terminated
with amino end ...
Fabrication of gold nanoparticles in Therminol VP-1 by laser ablation and fragmentation with fs pulses
(IOP Science, 2014-10-22)
This letter reports on a physical method to produce highly pure, size-controlled and well-dispersed spherical gold nanoparticles (NPs) in Therminol VP-1 by pulsed laser ablation in liquids (PLAL) using a 30 fs Ti:Sapphire ...
Core/Shell Colloidal Quantum Dot Exciplex States for the Development of Highly Efficient Quantum-Dot-Sensitized Solar Cells
(American Chemical Society, 2013)
Searching suitable panchromatic QD sensitizers for expanding the light-harvesting range, accelerating charge separation, and retarding charge recombination is an effective way to improve power conversion efficiency (PCE) ...
Properties of Chromophores Determining Recombination at the TiO2–Dye–Electrolyte Interface
(American Chemical Society, 2013)
Different classes of chromophores have been developed for the dye solar cell (DSC), including as the two main classes organometallic dyes, with Ru-based complexes and Zn-porphyrin complexes, and metal-free dyes. They result ...
Quatsomes: Vesicles Formed by Self-Assembly of Sterols and Quaternary Ammonium Surfactants
(American Chemical Society, 2013)
Thermodynamically stable nanovesicle structures are of high interest for academia and industry in a wide variety of application fields, ranging from preparation of nanomaterials to nanomedicine. Here, we show the ability ...
Temperature effects in dye-sensitized solar cells
(Royal Society of Chemistry, 2013)
In the standard solar cell technologies such as crystalline silicon and cadmium telluride, increments of
temperature in the cell produce large variations in the energy conversion efficiency, which decreases at a
constant ...
Electrical pumping of potassium ions against an external concentration gradient in a biological ion channel
(AIP Publishing, 2013-07-22)
We show experimentally and theoretically that significant currents can be obtained with a biological ion channel, the OmpF porin of Escherichia coli, using zero-average potentials as driving forces. The channel rectifying ...
Impact of Oxygen Vacancy Occupancy on Charge Carrier Dynamics in BiVO4 Photoanodes
(American Chemical Society, 2019-11-27)
Oxygen vacancies are ubiquitous in metal oxides and critical to performance, yet the impact of these states upon charge carrier dynamics important for photoelectrochemical and photocatalytic applications remains contentious ...