Perovskite Crystals for Tunable White Light Emission
By Sandeep Kumar Pathak, Nobuya Sakai, F. W. R. Rivarola, S. Stranks, Jiewei Liu, G. Eperon, C. Ducati, K. Wojciechowski, J. Griffiths, A. Haghighirad and 3 more. 2015
362 citations recorded by the source corpus.
A significant fraction of global electricity demand is for lighting. Enabled by the realization and development of efficient GaN blue light-emitting diodes (LEDs), phosphor-based solid-state white LEDs provide a much higher efficiency alternative to incandescent and fluorescent lighting, which are being broadly implemented. However, a key challenge for this industry is to achieve the right photometric ranges and application-specific emission spectra via cost-effective means. Here, we synthesize organic–inorganic lead halide-based perovskite crystals with broad spectral tuneability. By tailoring the composition of methyl and octlyammonium cations in the colloidal synthesis, meso- to nanoscale 3D crystals (5–50 nm) can be formed with enhanced photoluminescence efficiency. By increasing the octlyammonium cations content, we observe platelet formation of 2D layered perovskite sheets; however, these platelets appear to be less emissive than the 3D crystals. We further manipulate the halide composition of the p...
Subfields: Electrical and Electronic Engineering, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/a72d4a8019afc02fe68266da5129ab2be5c51836
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In Electrical and Electronic Engineering
In Materials Chemistry
Citations in the corpus
- Quantum Dots-Converted Light-Emitting Diodes Packaging for Lighting and Display: Status and Perspectives (2016, background): “Recently, metal halides perovskite QDs [106,107] show very narrow FWHM of 10 nm.”