Efficient light-emitting diodes based on in-situ self-assembled Perovskite nanocrystals

Heyong Wang; Hongling Yu; Xiao-Ke Liu; Feng Gao

doi:10.1117/12.2319181

14 September 2018 Efficient light-emitting diodes based on in-situ self-assembled Perovskite nanocrystals

Heyong Wang, Hongling Yu, Xiao-Ke Liu, Feng Gao

Proceedings Volume 10736, Organic Light Emitting Materials and Devices XXII; 107361F (2018) https://doi.org/10.1117/12.2319181
Event: SPIE Organic Photonics + Electronics, 2018, San Diego, California, United States

Abstract

We introduce a simple and low-cost approach, drop-coating method, for preparation of in-situ selfassembled perovskite nanocrystals for efficient light-emitting diodes. The PL spectrum of the self-assembled NFPI₄ nanocrystals thin film prepared by the drop-coating method shows blue shift compared with that of the typical NFPI₄ thin film prepared by spin-coating method. In addition, the PL spectra of these self-assembled nanocrystals are tuned from 765 nm to 725 nm by changing usage amounts of the perovskite precursor solution. More importantly, efficient light-emitting diodes with EQEs up to 6.8% are achieved based on these self-assembled NFPI₄ nanocrystals.

Citation Download Citation

Heyong Wang, Hongling Yu, Xiao-Ke Liu, and Feng Gao "Efficient light-emitting diodes based on in-situ self-assembled Perovskite nanocrystals", Proc. SPIE 10736, Organic Light Emitting Materials and Devices XXII, 107361F (14 September 2018); https://doi.org/10.1117/12.2319181

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