Department of Physics, Engineering Physics and Astronomy Faculty Publications
Recent Submissions
-
Low-Cost Molecular Glass Hole Transport Material for Perovskite Solar Cells
(IOP Publishing, 2021-02-16)The availability of low-cost hole transport materials (HTMs) that are easy to process is crucial for the eventual commercialization of perovskite solar cells (PSCs), as the commonly used HTM (Spiro-OmeTAD) is expensive, ... -
Mechanical Strength Characterization and Modeling of Hydroxyapatite / Tricalcium Phosphate Biocomposite Using the Diametral-Compression Test
(EDP Sciences, 2021-03-17)This study reports the enhanced mechanical resistance of the composite bioceramics of hydroxyapatite (HAP) and tricalcium phosphate (b-TCP) used as bone substitute. HAP/b-TCP mixture was prepared by wet mixing of powders ... -
Frontiers in Photosensor Materials and Designs for New Image Sensor Applications
(Institute of Electrical and Electronics Engineers, 2020-12-08)Certain applications of image sensors require capabilities that are beyond the technology of current image sensors such as automated quality inspection systems based on color discrimination under varying levels of illumination. ... -
Influence of Polymer Gate Dielectric on Organic Field-Effect Transistors: Interdependence of Molecular Weight, Solvent Polarity, and Surface Energy—A Case Study with PMMA and Pentacene
(Wiley, 2021-10-26)The semiconductor/dielectric interface controls the performance of organic field-effect transistors (OFETs). Herein, the influence of both the molecular weight and the polarity of the solvent of a poly(methyl methacrylate) ... -
Electronic Transport in the Biopigment Sepia Melanin
(American Chemical Society, 2020-07-05)Eumelanin is the most common form of the pigment melanin in the human body, with diverse functions including photoprotection, antioxidant behavior, metal chelation, and free radical scavenging. Melanin also plays a role ... -
Capacitance performance of NiO thin films synthesized by direct and pulse potentiostatic methods
(Springer, 2019-07-20)Transition metal oxides have applications into energy storage devices such as electrochemical supercapacitors. We deposited nickel oxide (NiO) thin films using electrodeposition under direct and pulse potentiometry. The ... -
Enhancement of the capacitance properties and the photoelectrochemical performances of P3HT film by incorporation of nickel oxide nanoparticles
(Springer, 2018-11-15)P3HT films were modified by incorporation of different amounts of nickel oxide (NiO). The nickel oxide powder was synthe- sized by chronoamperometry. The composites were further dissolved and deposited by the spin-coating ... -
Photonic crystal based broadband graphene saturable absorber
(OSA Publishing, 2019-10-01)The enhanced saturable absorption (SA) of a one- dimensional (1D) photonic crystal (PC) made from polymers and graphene composites by spin-coating is observed. It shows obvious bandgaps at two wavelengths in transmittance. ... -
Synthesis and properties of alumina-hydroxyapatite composites from natural phosphate for phenol removal from water
(Elsevier, 2019-07-01)Phenol is very abundant in the aquatic environment and therefore requires an effective treatment using porous and low-cost adsorbents. Alumina-hydroxyapatite composites were prepared from natural phosphate ore in the ... -
Development of sulfonate-functionalized hydroxyapatite nanoparticles for cadmium removal from aqueous solutions
(Elsevier, 2019-05-01)Sulfonate-functionalized hydroxyapatite was successfully synthesized by organo- functionalization using natural phosphate and Benzenedisulfonate molecules. The modified apatites were characterized using multiple techniques, ... -
Enhanced Near-Infrared Electroluminescence from a Neodymium Complex in Organic Light-Emitting Diodes with a Solution-Processed Exciplex Host
(American Institute of Physics, 2019-01-24)We report enhanced near-infrared (NIR) electroluminescence from a Nd3þ-complex with thenoyltrifluoroacetone and 1,10-phe- nanthroline ligands. The NIR-emitting complex was blended into an exciplex-forming co-host system ... -
Nonlinear Optical Signatures of Transition from Semiconductor to Semimetal in PtSe2
(Wiley, 2019-07-08)The demand for an ultrabroad optical material with a bandgap tunable from zero to at least 1~2 eV has been one of the driving forces for exploring new two-dimensional (2D) materials since the emergence of graphene, transition ... -
Copper oxide nanoparticle doped bulk-heterojunction photovoltaic devices
(Elsevier, 2019-06-01)Organic and metal oxide-based hybrid solar cells have drawn attention for their improved device performance along with mechanical stability and cost-effectiveness. We investigated the incorporation of various concentrations ... -
Revisiting the Optimal Nano-Morphology: Towards Amorphous Organic Photovoltaics
(Wiley, 2019-06-01)Organic photovoltaic cells commonly use an active layer with a polycrystalline bulk heterojunction. However, for simplifying the fabrication process, it may be worthwhile to use an amorphous active layer to lessen the ... -
Two-photon absorption towards pulse modulation in mechanically exfoliated and CVD monolayer cascaded MoS2 structures
(Chinese Optics Letters, 2019-07-16)Mechanical exfoliation (ME) and chemical vapor deposition (CVD) MoS2 monolayers have been extensively studied, but the large differences of nonlinear optical performance between them have never been clarified. Here, we ... -
Bulk luminescent solar concentrators based on organic-inorganic CH3NH3PbBr3 perovskite fluorophores
(Elsevier, 2018-12-17)In this paper, we report characterization and performance results of lead bromide perovskite luminescent solar concentrator. CH3NH3PbBr3 fluorophores are synthesized by sonication method and examined by their X-ray diffraction ... -
Self-Reconstructing All Optical Poling in Polymer Fibers
(Optical Society of America, 2013-08-05)Self-sustained all-optical poling second-harmonic generation (SHG) experiments are conducted in single-core and multicore dye-doped poly(methyl methacrylate) optical fibers. By tuning the polarization of the fundamental ... -
3D Hybrid perovskites solid solution: A facile approach for deposition of nanoparticles and thin films via B-site substitution
(Royal Society of Chemistry, 2019-03-12)Mixed metal halide perovskite is gaining a paramount interest due to efficient band gap tenability and improved optical properties compared to their single metal halide perovskite. Compositional change in lead halide ... -
Photoinduction of spontaneous surface relief gratings on Azo DR1 Glass
(Optical Society of America, 2016-06-23)Surface relief gratings were spontaneously photoinduced from a collimated Nd:YAG laser beam at 532 nm on thin films of a disperse red 1 functionalized glass-forming compound. Pattern formation was studied by measuring the ... -
Stress Testing Polymer Light-Emitting Electrochemical Cells: Suppression of Voltage Drift and Black Spot Formation
(Wiley, 2018)The stress characteristics of the polymer light-emitting electrochemical cells (PLECs) are comprehensively evaluated by varying a host of material and operational parameters. PLECs with the lowest salt concentration of ...
RSS 1.0