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Showing 1 to 8 of 8 for “"CH3NH3PbI3"”.
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Lead Free CH3NH3SNI3 Perovskite Thin-Film with P-type Semiconducting Nature and Metal-like Conductivity
<p>CH3NH3SnI3 and CH3NH3PbI3 have become very promising light absorbing materials for photovoltaic devices over the last several years. CH3NH3PbI3 based perovskite solar cells have reached a solar-to-electricity conversion efficiency of ~ 22%. Nevertheless, CH3NH3PbI3 perovskite solar cells contain …
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Deposition and characterisation of perovskite thin films
… thin films.Films of methylammonium lead iodide CH3NH3PbI3 were dopedwith Cl and Br ions to investigate the intrinsic differences of theseperovskites. As a result of doping, photoluminescence (PL) spectraconfirmed optoelectronic influence evidenced by changes in banggap energy. Bromine treated …
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Synthetic exploration of halide perovskites and germanium semiconductors
… (CH3)3Sb2I9 layers restrict the growth of CH3NH3PbI3, resulting in CH3NH3PbI3 nanocrystals. Compared to the bulk perovskites, the antimony-capped nanocrystals show stronger photoluminescence. With a direct bandgap of 1.6 eV and a corner-sharing octahedral network crystal structure that are …
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Developing microwave probes for investigating opto-electronic processes in photovoltaic materials
… the charge carrier mobilities and lifetimes of CH3NH3PbI3 lead halide perovskite thin films using TRMC. The spectrally resolved TRMC apparatus enabled the investigation of charge decay dynamics at a range of excitation energies, mimicking the solar spectrum. We differentiate between direct and …
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Charge Carrier Relaxation in Halide Perovskite Semiconductors for Optoelectronic Applications
… signal shows a rise over 2 picoseconds in CH3NH3PbI3 while carriers cool to the band edge. This shows that luminescence of hot carriers is slower than that of cold carriers, as is found in direct gap semiconductors. We conclude that electrons and holes show strong overlap in momentum space, …
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Characterization and application of Pb-based organometal halide perovskite
… was confirmed by X-ray diffraction, and CH3NH3PbI3 shows a tetragonal phase with lattice parameters a=b=8.872 Å and c =12.637 Å. The morphology investigation shows that solution spin-casting method produces needle-shaped crystals, leading to a partial surface coverage and limited …
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First Principle Modeling of Hybrid Halide Perovskites for Optoelectronic Applications
… halide perovskites shows that the benchmark HP CH3NH3PbI3 (MAPI) has the largest splitting, indicating promising potential for applications in ultrafast optical detectors, while other mixed HPs may be used as spin-injection and transport materials. Finally, the band offset method for studying …
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Development and characterization of solar energy conversion devices based on nanocomposite semiconductors
… in order for the mixed halide perovskite (CH3NH3PbI3-xClx) to infiltrate exhibited a maximum power conversion efficiency of 12.86% which improved the efficiency of the PSCs with the pristine TiO2 over 28%. This is attributed to the better interfacial connection between …