Alternating Current Driven Electroluminescence from ZnSe/ZnS:Mn/ZnS Nanocrystals

• Published in: Nano letters Vol. 9; no. 6; pp. 2367 - 2371
• Main Authors: Wood, Vanessa, Halpert, Jonathan E, Panzer, Matthew J, Bawendi, Moungi G, Bulović, Vladimir
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 10.06.2009
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fullerenes and related materials; Materials science; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Physics; Visible and ultraviolet spectra; Electroluminescent devices; Doping; Visible spectra; Zinc selenides; Electroluminescence; Quantum yield; Thin films; Zinc sulfide; II-VI semiconductors; Ambient temperature; Wide band gap semiconductors; Nanostructured materials; Nanocrystal
• ISSN: 1530-6984; 1530-6992; 1530-6992
• DOI: 10.1021/nl900898t

We present a novel technique for room temperature, solution-based fabrication of alternating current thin-film electroluminescent (AC-TFEL) devices using phosphor-doped nanocrystals. Synthesis for stable ZnSe/ZnS:Mn/ZnS nanocrystals that exhibit a quantum yield of 65 ± 5% is outlined, and their electroluminescence is demonstrated in structures consisting of only wide band gap ceramic layers. Both the nanocrystal and the ceramic films have minimal absorption across the visible light spectrum, enabling us to demonstrate transparent AC-TFEL devices.