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CMP
Credit: Jack Hobhouse

Prof Henry Snaith FRS

Professor of Physics

Sub department

  • Condensed Matter Physics

Research groups

  • Snaith group
  • Advanced Device Concepts for Next-Generation Photovoltaics
Henry.Snaith@physics.ox.ac.uk
Robert Hooke Building, room G21
  • About
  • Publications

Solution-processed all-perovskite multi-junction solar cells

Joule Elsevier 3:2 (2019) 387-401

Authors:

David McMeekin, Suhas Mahesh, Nakita Noel, Matthew Klug, Jongchul Lim, Jonathan Warby, James Ball, Laura Herz, Michael Johnston, Henry Snaith
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T.B.A

Fundacio Scito (2019)
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Vacuum-deposited Cs2AgBiBr6. Photovoltaic devices and fundamental characterization.

Fundacio Scito (2019)

Authors:

Giulia Longo, Suhas Mahesh, Jongchul Lim, Pabitra Nayak, Henry J Snaith
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Facile synthesis of stable and highly luminescent methylammonium lead halide nanocrystals for efficient light emitting devices

Journal of the American Chemical Society American Chemical Society 141:3 (2019) 1269-1279

Authors:

Yasser Hassan, Olivia J Ashton, JH Park, G Li, Nobuya Sakai, Bernard Wenger, Amir-Abbas Haghighirad, Nakita K Noel, MH Song, BR Lee, RH Friend, HJ Snaith

Abstract:

Metal halide perovskites are promising candidates for use in light emitting diodes (LEDs), due to their potential for color tunable and high luminescence efficiency. While recent advances in perovskite-based light emitting diodes have resulted in external quantum efficiencies exceeding 12.4% for the green emitters, and infrared emitters based on 3D/2D mixed dimensional perovskites have exceeded 20%, the external quantum efficiencies of the red and blue emitters still lag behind. A critical issue to date is creating highly emissive and stable perovskite emitters with the desirable emission band gap to achieve full-color displays and white LEDs. Herein, we report the preparation and characterization of a highly luminescent and stable suspension of cubic-shaped methylammonium lead triiodide (CH3NH3PbI3) perovskite nanocrystals, where we synthesize the nanocrystals via a ligand-assisted reprecipitation technique, using an acetonitrile/methylamine compound solvent system to solvate the ions and toluene as the antisolvent to induce crystallization. Through tuning the ratio of the ligands, the ligand to toluene ratio, and the temperature of the toluene, we obtain a solution of CH3NH3PbI3 nanocrystals with a photoluminescence quantum yield exceeding 93% and tunable emission between 660 and 705 nm. We also achieved red emission at 635 nm by blending the nanocrystals with bromide salt and obtained perovskite-based light emitting diodes with maximum electroluminescent external quantum efficiency of 2.75%.
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Investigation of the excitonic properties of hybrid and fully inorganic perovskite using magneto-spectroscopy

(2019) 1506-1506

Authors:

Zhuo Yang, Alessandro Surrente, Krzysztof Galkowski, Atsuhiko Miyata, Rebecca Sutton, Amir Abbas Haghighirad, Henry Snaith, Duncan Maude, Paulina Plochocka, Robin Nicholas
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