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Showing 1 to 6 of 6 for “"PLQE"”.
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Halide Perovskites for Photovoltaics and Light-Emitting Diodes
… regions. Terahertz measurements coupled with PLQE and transient PL results reveal that the high carrier mobilities are the main reason behind the high efficiency of tin-rich samples. A novel perovskite-polymer-bulk heterostructure is introduced and studied comprehensively. Correlations between …
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Silicon rich nitride for silicon based laser devices
… in Si-nc embedded in SRN was demonstrated with a PLQE (Photoluminescence Quantum Efficiency) of 7%. This effect was confirmed through several experiments and first principle calculations. Thue Morse aperiodic structures were fabricated with light emitting SRN and SiO2 materials, for the first …
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Materials, methods and concepts for 21st century solar cells
… higher photoluminescence quantum efficiencies (PLQEs) than has previously been observed. Furthermore, zinc iodide is shown to increase these materials’ tolerance to oxygen substantially. It is shown that zinc iodide increases the mixing of lead and tin, removing tin rich (oxygen sensitive) …
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Multisource Evaporation of Perovskite Solar Cells
… 1.62 eV. To understand the non-radiative loss, PLQE measurements have been performed, and the surface passivation treatment by Ethane-1,2-diammonium iodide (EDAI) leads to an improvement in VOC and fill factor. The narrow bandgap perovskite with Pb/Sn composition is prepared and the film …
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Enhancing Fluorescence and Charge Transport in Disordered Organic Semiconductors
High performance optoelectronic applications require simultaneously high mobility ($\mu$) and high quantum efficiency of fluorescence ($\Phi$). While this has been realised for organic small molecule semiconductors, applications such as high efficiency organic photovoltaics and bright organic …
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Charge Carrier Relaxation in Halide Perovskite Semiconductors for Optoelectronic Applications
Lead halide perovskites have shown remarkable device performance in both solar cells and LEDs. Whilst the research efforts so far have been mainly focussed on device optimisation, little is known about the photophysical properties. For example, the nature of the bandgap is still debated and an …