Sökning: "perovskites"

Visar resultat 36 - 40 av 63 avhandlingar innehållade ordet perovskites.

  1. 36. Preparation of Functional Oxide Perovskites: A Study on the Growth-Microstructure-Property Relationships of(N a,K)NbOx Thin Films

    Författare :Veronika Mozhdeh Kugler; S. Ismat Shah; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Sodium-potassium niobate is a material with ferroelectric and piezoelectric properties that has been known since 1954. Recently, perovskite structured ferroelectric thin films have gained a lot of attention due to their wide area of potential applications, including non-volatile memories, infrared sensors, optical switches, and ultrasonic transducers. LÄS MER

  3. 37. Synthetis, Structure, and Magnetic Properties of Double Perovskites of the type A2MnBO6 and A2FeBO6 (A=Ca, Sr, Ba, La; B=W, Mo, Cr)

    Författare :Abul Kalam Azad; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 38. In pursuit of next generation photovoltaics : An electronic structure study of emerging solar cell materials

    Författare :Axel Erbing; Michael Odelius; David Scanlon; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Solar cells; computational physics; density functional theory; electronic structure; molecular dynamics; Solceller; beräkningsfysik; täthetsfunktionalteori; elektronstruktur; molekyldynamik; Theoretical Physics; teoretisk fysik;

    Sammanfattning : The development of a new generation of photovoltaic technologies is an important task in order to increase the production of clean energy. Perovskite solar cells, with an exceptionally rapid development over the last decade, have transformed into perhaps the most promising candidate to provide a low-cost alternative to conventional cells. LÄS MER

  5. 39. Color Tuning for Perovskite Light-Emitting Diodes

    Författare :Hongling Yu; Feng Gao; Xiaoke Liu; Olle Inganäs; Fengling Zhang; Maksym V. Kovalenko; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Perovskite light-emitting diodes; Color tuning; Pure and mixed halide; Spectral stability; White emission;

    Sammanfattning : Metal halide perovskites (MHPs) are recognized as promising semiconductor materials for a variety of optical and electrical device applications due to their cost-effective and outstanding optoelectronic properties. As one of the most significant applications, perovskite light-emitting diodes (PeLEDs) hold promise for future lighting and display technologies, attributed to their high photoluminescence quantum yield (PLQY), high color purity, and tunable emission color. LÄS MER

  7. 40. Effects of Environment on Charge Recombination in Organo-Metal-Halide Perovskite Observed by Photoluminescence Microscopy and Spectroscopy

    Författare :Jun Li; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Environment; photoluminescence microscopy and spectroscopy; organo-metal-halide perovskite; charge recombination;

    Sammanfattning : Organo-metal-halide (OMH) perovskites form a new class of materials withperovskite crystal structure ABX3 where A is an organic molecule, B is lead (Pb)and X is a halide atom (I or Br). OMH perovskite semiconductors have been widely used in photovoltaics due to their very strong absorption of sun light, very suitable electrical properties, and the ease of preparation. LÄS MER