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Enhanced performance in fluorene-free organometal halide perovskite light-emitting diodes using tunable, low electron affinity oxide electron injectors.

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.

SUBMITTER: Hoye RL

PROVIDER: S-EPMC4515082 | biostudies-other | 2015 Feb

REPOSITORIES: biostudies-other

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Enhanced performance in fluorene-free organometal halide perovskite light-emitting diodes using tunable, low electron affinity oxide electron injectors.

Hoye Robert L Z RL Chua Matthew R MR Musselman Kevin P KP Li Guangru G Lai May-Ling ML Tan Zhi-Kuang ZK Greenham Neil C NC MacManus-Driscoll Judith L JL Friend Richard H RH Credgington Dan D

Advanced materials (Deerfield Beach, Fla.) 20150109 8

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. ...[more]

PMID: 25573086

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