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Showing 1–9 of 9 results
Advanced filters: Author: Larissa Levina Clear advanced filters

  • A solution-processed electronic device that uses colloidal quantum dots of lead sulphide outperforms the state-of-the-art crystalline alternatives, with ease of fabrication, physical flexibility, large device areas and low cost among its benefits.

    • Gerasimos Konstantatos
    • Ian Howard
    • Edward H. Sargent
    Research
    Nature
    Volume: 442, P: 180-183

  • Previous photodetectors based on solution-processed colloidal quantum dots have demonstrated either rapid response times or high sensitivity. Researchers have now taken advantage of new insights into charge transport in these devices to build photodiodes that offer both rapid response times and high sensitivity.

    • Jason P. Clifford
    • Gerasimos Konstantatos
    • Edward H. Sargent
    Research
    Nature Nanotechnology
    Volume: 4, P: 40-44

  • Researchers report a colloidal quantum-dot solar cell that features two junctions, each designed to absorb and convert different spectral bands of light within the solar spectrum. The device offers a power conversion efficiency of 4.2% and an open circuit voltage of 1.06 V.

    • Xihua Wang
    • Ghada I. Koleilat
    • Edward H. Sargent
    Research
    Nature Photonics
    Volume: 5, P: 480-484

  • Colloidal quantum dots are promising materials for efficient low-cost solar cells and optoelectronics, but their performance does not improve with increased carrier mobility. Here, the authors show instead that the spacing between recombination centres controls the diffusion length.

    • David Zhitomirsky
    • Oleksandr Voznyy
    • Edward H. Sargent
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Organic ligands enhance the stability and the solution processability of semiconductor quantum dots, but they can impede charge transport in films of such nanoparticles. Passivation with atomic ligands now offers an alternative strategy that enables the fabrication of PbS colloidal-quantum-dot solar cells with power-conversion efficiencies of up to 6%.

    • Jiang Tang
    • Kyle W. Kemp
    • Edward H. Sargent
    Research
    Nature Materials
    Volume: 10, P: 765-771

  • Improved performance in a photovoltaic device made of colloidal quantum dots is achieved through a combination of passivation by halide anions and organic crosslinking.

    • Alexander H. Ip
    • Susanna M. Thon
    • Edward H. Sargent
    Research
    Nature Nanotechnology
    Volume: 7, P: 577-582