Browsing Department of Physics, Engineering Physics and Astronomy Faculty Publications by Title
Now showing items 1-20 of 51
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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 ... -
Bipolar Electrode Array Embedded in a Polymer Light-Emitting Electrochemical Cell
(American Chemical Society (ACS), 2017-09-20)A linear array of aluminum discs is deposited between the driving electrodes of an extremely large planar polymer light-emitting electrochemical cell (PLEC). The planar PLEC is then operated at a constant bias voltage of ... -
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 ... -
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 ... -
Cesium lead halide perovskite nanostructures: tunable morphology and halide composition
(Wiley, 2017-08-25)Inorganic halide perovskite (CsPbX3) nanostructures have gained considerable interest in recent years owing to their enhanced stability and optoelectronic applications. Recent developments in the synthesis of nanostructures ... -
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 ... -
Deceleration of thermal ring closure in a glass-forming mexylaminotriazine-substituted merocyanine (MC) linked to intramolecular hydrogen bonding
(RSC, 2016-12-21)The design and synthesis of a glass-forming nitrobenzospiropyran (SP) functionalized with a mexylaminotriazine group is reported herein. The title compound was synthesized in 63% overall yield by the carbamylation of a ... -
Decoding the Polymer p–n Junction: Controlled Dedoping and Reverse Bias Electroluminescence
(Wiley, 2020)The polymer light-emitting electrochemical cell (PLEC) is a unique solid-state device possessing attractive attributes for low-cost applications, but also a junction structure that is still poorly understood. In a PLEC, ... -
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, ... -
Dynamic Bipolar Electrode Array for Visualized Screening of Electrode Materials in Light-Emitting Electrochemical Cells
(American Chemical Society (ACS), 2019-01-09)Charge injection at a metal/semiconductor interface is of paramount importance for many chemical and physical processes. The dual injection of electrons and holes, for example, is necessary for electroluminescence in organic ... -
The dynamic bipolar electrode in polymer light-emitting electrochemical cells
(Elsevier BV, 2019-05-01)The redox doping reactions in polymer light-emitting electrochemical cells (PLECs) have been analyzed to gain insight into a new type of bipolar electrode (BPE) formed within the cells. Planar (lateral) PLECs are constructed ... -
Efficiency enhancement of ternary blend organic photovoltaic cells with molecular glasses as guest acceptors
(Elsevier, 2017-11-06)Previously reported glass-forming perylenediimide (PDI-glass) and diketopyrrolopyrrole (DPP-glass) acceptors were used as ternary components to modulate the morphology and electron transport properties of bulk heterojunctions ... -
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 ... -
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 ... -
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 ... -
Fabrication of planar heterojunction CsPbBr2I perovskite solar cells using ZnO as an electron transport layer and improved solar energy conversion efficiency
(RSC, 2018-06-26)Inorganic lead halide perovskite solar cells with mixed halides have achieved reasonable power conversion efficiency with the advantage of an enhanced stability. In this work, we report the fabrication of an all inorganic ... -
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. ... -
High resolution scanning optical imaging of a frozen planar polymer light-emitting electrochemical cell: an experimental and modelling study
(Springer Science and Business Media LLC, 2017-04-01)Light-emitting electrochemical cells (LECs) are organic photonic devices based on a mixed electronic and ionic conductor. The active layer of a polymer-based LEC consists of a luminescent polymer, an ion-solvating/transport ... -
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) ... -
Interfacial Modification of the Electron Collecting Layer of Low-Temperature Solution-Processed Organometallic Halide Photovoltaic Cells Using an Amorphous Perylenediimide
(Elsevier, 2016-10-23)The efficiency of organometallic halide photovoltaic cells can be improved by interfacial modification of the titanium oxide (TiOx) electron collecting layer by a thin layer of an organic material. Enhancements of power ...