Towards rare-earth-free white light-emitting diode devices based on the combination of dicyanomethylene and pyranine as organic dyes supported on zinc single-layered hydroxide

• Jeff L. Nyalosaso,
• Rachod Boonsin,
• Pierre Vialat,
• Damien Boyer,
• Geneviève Chadeyron,
• Rachid Mahiou and
• Fabrice Leroux

Beilstein J. Nanotechnol. 2019, 10, 760–770, doi:10.3762/bjnano.10.75

• -emitting diode (LED); pyranine; zinc hydroxyacetate; Introduction Light-emitting diode (LED) devices are the most developed lighting systems today. 95% of LEDs found on the market generate white light by combining the blue light of a semiconductor diode (GaN or InGaN) with the broad yellow emission of the

• +, Ni2+, Co2+ and Cu2+ and X represents an interfoliary anion such as acetate or nitrate. Similar to zinc basic salts, zinc hydroxyacetate Zn5(OH)8(CH3COO)2·2H2O (Zn-SLH) is a white solid that is suitable for our study. Thanks to its positive lamellar charge, Zn-SLH can serve as a diluting solid allowing

• variations in the molecular area of each metal atom. TG-DTA measurements (Figure 3c) carried out on the dried Zn-SLH showed mass losses of 39% upon heating to 800 °C through the decomposition of zinc hydroxyacetate up to the fully inorganic ZnO. The associated thermal events are well documented [19] and