A CuO Nanowire-Based Alternating Current Oxide Powder Electroluminescent Device with High Stability
| Autor: | Zhilin Peng, Adrian H. Kitai, Siwei Ma |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Fabrication Nanowire Oxide Phosphor 02 engineering and technology Electroluminescence 010402 general chemistry 7. Clean energy 01 natural sciences Catalysis law.invention chemistry.chemical_compound law Electric field Thermal oxidation business.industry General Chemistry General Medicine 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Optoelectronics Alternating current business 0210 nano-technology |
| Zdroj: | Angewandte Chemie. 130:11437-11442 |
| ISSN: | 0044-8249 |
| Popis: | An AC-driven powder electroluminescent (EL) device has been achieved by constructing a CuO nanowire-Zn2 GeO4 :Mn phosphor heterogeneous junction. The CuO nanowires enhance the local electric field, resulting in electroluminescence of an oxide-based phosphor in EL devices owing to field injection at the nanowire tips. The CuO nanowire array was synthesized by an in situ thermal oxidation method at 400 °C in air and employed as an electric field enhancement layer in the EL device. The heterogeneous structures were created through drop coating of a phosphor suspension on the CuO nanowire array. The initial EL device tests show good luminescent performance with very promising brightness maintenance for over 360 h, with a loss of luminescent intensity of under 1 % at over 10 cd m-2 luminance. The fabrication method offers the prospect of simple, low-cost, large-scale EL devices with the potential to solve the limited operational lifetime of sulfide-based AC powder EL devices. |
| Databáze: | OpenAIRE |
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