Efficient and low-cost light-emitting electrochemical cells of graphene quantum dots

高效低成本石墨烯量子点发光电化学电池

• 批准号: 493924-2016
• 负责人: Ding, Zhifeng
• 金额: $ 13.89万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=642018
• 关键词: Efficient; low; cost; light; emitting

Canada currently spends $35 billion for electricity. The consumption of electrical energy in the lighting sector is ca. 20%. Lighting represents the ideal playing field for saving energy and reducing greenhouse gases. Light-emitting electrochemical cells (LECs) are one of the simplest kinds of lighting devices. They consist of very thin layer of light emitting materials sandwiched by two electricity contacts and emit white light as our fluorescent tubes used for lighting upon connection of electricity. LECs consume much less power and emit light stronger than our lighting bulbs. On the other hand, carbon is rich on the earth. Graphene is a flat sheet of bonded carbon atoms or a stack of these sheets, while grapheme quantum dots (GQDs) are pieces of these sheets as small as several nanometers (nm, 1 billionth meter). GQDs are luminescent and can be used in the above LECs. This proposal addresses our strategies of making LECs, using low cost GQDs. We will develop this kind of LECs on industry standard printed circuit boards (PCBs) or flexible PCBs, which are easy to use for lighting, and have a long durability. This project extends our patent-pending technology of one-pot electrochemical preparation of luminescent GQDs to the best performance and lowest cost ones. The LECs are expected to generate greater than 10% energy efficiency. Within three years, the strategic project will deliver prototypes of LECs in 10 cm x 10 cm pieces of GQD LEC devices. The strategic project will lead to the following benefits to Canada: (a) Wealth creation including new start-ups to produce the lighting products; new business in the value chain of these new start-ups; new and attractive employment opportunities; and (b) The health and environmental benefits include those associated with the green manufacturing considerations explained in the proposal, and with the introduction of green fabrication to reduce energy consumption, global warming potential in the next 100 years (GWP100), and other environmental loads.

加拿大目前的电力支出为 350 亿美元。照明领域的电能消耗约为。 20%。照明代表了节能和减少温室气体排放的理想环境。发光电化学电池（LEC）是最简单的照明设备之一。它们由非常薄的发光材料层组成，夹在两个电触点之间，并发出白光，就像我们的荧光灯管在通电时用于照明一样。 LEC 的功耗比我们的灯泡低得多，而且发出的光更强。另一方面，地球上的碳含量丰富。石墨烯是由碳原子键合而成的平板或这些薄片的堆叠，而石墨烯量子点（GQD）是这些薄片的小至几纳米（纳米，十亿分之一米）的碎片。 GQD 具有发光性，可用于上述 LEC。该提案解决了我们使用低成本 GQD 制造 LEC 的策略。我们将在行业标准印刷电路板（PCB）或柔性PCB上开发这种LEC，它们易于用于照明，并且具有较长的耐用性。该项目将我们正在申请专利的一锅电化学制备发光 GQD 技术扩展到性能最佳、成本最低的技术。 LEC 预计将产生超过 10% 的能源效率。三年内，该战略项目将交付采用 10 cm x 10 cm GQD LEC 器件的 LEC 原型。该战略项目将为加拿大带来以下好处： (a) 创造财富，包括新的初创企业生产照明产品；这些新初创企业价值链中的新业务；新的、有吸引力的就业机会； (b) 健康和环境效益包括与提案中解释的绿色制造考虑因素相关的效益，以及引入绿色制造以减少能源消耗、未来 100 年全球变暖潜力 (GWP100) 和其他环境负荷的效益。