Enhanced performance in fluorene-free organometal halide perovskite light-emitting diodes using tunable, low electron affinity oxide electron injectors.
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Abstract
Fluorene-free perovskite light-emitting diodes (LEDs) with low turn-on voltages, higher luminance and sharp, color-pure electroluminescence are obtained by replacing the F8 electron injector with ZnO, which is directly deposited onto the CH3NH3PbBr3 perovskite using spatial atmospheric atomic layer deposition. The electron injection barrier can also be reduced by decreasing the ZnO electron affinity through Mg incorporation, leading to lower turn-on voltages.
Description
Journal Title
Adv Mater
Conference Name
Journal ISSN
0935-9648
1521-4095
1521-4095
Volume Title
27
Publisher
Wiley
Publisher DOI
Rights and licensing
Except where otherwised noted, this item's license is described as Attribution 2.0 UK: England & Wales
Sponsorship
Engineering and Physical Sciences Research Council (EP/G060738/1)
European Research Council (247276)
European Research Council (247276)
The authors would like to acknowledge funding from the Cambridge Commonwealth, European and International Trusts, Rutherford Foundation of New Zealand, A*STAR National Science Scholarship, Girton College Cambridge, Gates Cambridge Scholarship, EPSRC (Reference: EP/G060738/1), the ERC Advanced Investigator Grant, Novox, ERC-2009-adG 247276 and Cambridge Display Technology.