Bright Light-Emitting Diodes Based on Organometal Halide Perovskite Nanoplatelets

Yichuan Ling; Zhao Yuan; Yu Tian; Xi Wang; Jamie C Wang; Yan Xin; Kenneth Hanson; Biwu Ma; Hanwei Gao

doi:10.1002/adma.201503954

Bright Light-Emitting Diodes Based on Organometal Halide Perovskite Nanoplatelets

Adv Mater. 2016 Jan 13;28(2):305-11. doi: 10.1002/adma.201503954. Epub 2015 Nov 17.

Authors

Yichuan Ling¹, Zhao Yuan², Yu Tian³, Xi Wang¹, Jamie C Wang⁴, Yan Xin⁵, Kenneth Hanson⁴, Biwu Ma^{2

3}, Hanwei Gao^{1

3

5}

Affiliations

¹ Department of Physics, Florida State University, Tallahassee, FL, 32306, USA.
² Department of Chemical and Biological Engineering, FAMU-FSU College of Engineering, Tallahassee, FL, 32310, USA.
³ Materials Science Program, Florida State University, Tallahassee, FL, 32306, USA.
⁴ Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL, 32306, USA.
⁵ National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, 32310, USA.

PMID: 26572239
DOI: 10.1002/adma.201503954

Abstract

Bright light-emitting diodes based on solution-processable organometal halide perovskite nanoplatelets are demonstrated. The nanoplatelets created using a facile one-pot synthesis exhibit narrow-band emissions at 529 nm and quantum yield up to 85%. Using these nanoparticles as emitters, efficient electroluminescence is achieved with a brightness of 10 590 cd m(-2) . These ligand-capped nanoplatelets appear to be quite stable in moisture, allowing out-of-glovebox device fabrication.

Keywords: electroluminescence; halide; light-emitting diodes; nanoplatelets; organometal; perovskite; photoluminescence.