Electroluminescent metal oxide quantum dot devices for sustainable solid state lighting technologies

用于可持续固态照明技术的电致发光金属氧化物量子点器件

• 批准号: 521224-2018
• 负责人: Radovanovic, Pavle
• 金额: $ 17.54万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=694658
• 关键词: Electroluminescent; metal; oxide; quantum; dot

General lighting accounts for more than 20 percent of the word's total electricity production, and is responsible for ca. 1.9 gigatones of carbon dioxide emission. Commercial and industrial sectors, which together constitute over 60 % of the overall lighting demand, are seeking safer, more efficient, and longer lasting alternatives to traditionally used halogen and fluorescent sources. Although solid-state lighting is seen as the long-term solution, its broader adoption in these market segments is hampered by comparatively high cost, which is partly caused by the use of strategically deficient and/or environmentally harmful elements, as well as by the design and manufacturing complexity. In partnership with two Canadian companies, Metalumen Manufacturing and OTI Lumionics, the goal of this project is to develop novel solid state lighting technologies based on robust, environmentally benign, and earth-abundant metal oxide quantum dots. Using a combination of steady-state and time-resolved spectroscopies at the ensemble and single nanostructure levels, together with theoretical modelling, we will elucidate the origin of the photoluminescence properties of these nanostructures arising from the presence of native defects. We will apply the findings of this fundamental investigation for the rational design and synthesis of novel luminescent metal oxide quantum dots with the desired spectral properties. The optimized metal oxide quantum dots will subsequently be used as electroluminescent components in novel light emitting devices that can be fabricated using simple solution coating and vacuum deposition techniques, with the potential to lower manufacturing costs. The ability to induce energy transfer in hybrid metal oxide nanoconjugates and externally manipulate defect interactions in individual nanocrystals will be used to generate white light with desired characteristics (chromaticity, correlated colour temperature, and colour rendering index) and ultimately achieve dynamic tuning of the light output. Successful realization of this project will generate new efficient and sustainable lighting technologies which will improve Canada's competitiveness, and open new market opportunities for our industrial partners.

普通照明占世界总发电量的 20% 以上，约占世界总发电量的 20% 以上。二氧化碳排放量1.9十亿吨。商业和工业部门合计占整体照明需求的 60% 以上，正在寻求更安全、更高效、更持久的传统卤素和荧光光源替代品。尽管固态照明被视为长期解决方案，但其在这些细分市场的更广泛采用受到成本相对较高的阻碍，部分原因是使用了战略上缺乏和/或对环境有害的元素，以及设计和制造的复杂性。该项目与两家加拿大公司 Metalumen Manufacturing 和 OTI Lumionics 合作，目标是开发基于坚固、环保且地球资源丰富的金属氧化物量子点的新型固态照明技术。在整体和单个纳米结构水平上结合使用稳态和时间分辨光谱，并结合理论建模，我们将阐明这些纳米结构因存在固有缺陷而产生的光致发光特性的起源。我们将应用这一基础研究的结果来合理设计和合成具有所需光谱特性的新型发光金属氧化物量子点。优化后的金属氧化物量子点随后将用作新型发光器件中的电致发光元件，这些器件可以使用简单的溶液涂覆和真空沉积技术来制造，并有可能降低制造成本。 在混合金属氧化物纳米复合物中诱导能量转移以及从外部操纵单个纳米晶体中的缺陷相互作用的能力将用于产生具有所需特性（色度、相关色温和显色指数）的白光，并最终实现光输出的动态调谐。该项目的成功实现将产生新的高效和可持续的照明技术，这将提高加拿大的竞争力，并为我们的工业合作伙伴开辟新的市场机会。