Synthesis of new Chromophors to use in Optoelectronic applications

合成用于光电应用的新发色团

• 批准号: 2898459
• 金额: --
• 依托单位: University of Southampton
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2898459
• 关键词: Synthesis; new; Chromophors; use; Optoelectronic

Gas sensing plays a key role in enabling many different technologies used to monitor the emissions from different sources. Photonic gas sensors exhibit unique advantages of building a CMOS-compatible, cost-effective, and portable sensing system fully integrated on a single chip. In order to transmit data efficiently between sensors, so far electrically driven modulation relies on un-efficient refractive index change resulting from the modulation of carrier density in silicon either by carrier depletion, injection or accumulation. In nonlinear optical (NLO) polymers however, the electro-optic (EO) effect originates from the electronic hyperpolarisability of the organic molecules, which allows extremely high modulation speeds. Furthermore, molecular engineering of organic molecules can lead to extremely high Pockels-coefficients in polymers exceeding 10 times the value available in the lithium-niobate, the industrial standard inorganic material used in optical data transmission application. Photonic devices based on a hybrid material system merging silicon and polymer are therefore attractive since they combine the strong light confining abilities of silicon with the superior NLO properties of polymers, thereby enabling extremely fast modulation, ultra-low driving power and small geometric footprint that will enable the generation of optical transceivers and data transfer between remote sensing platforms.The PhD consists in the synthesis and development of the monomers required for EO and the preparation of the polymers that will be tested in several Photonic Devices in collaboration with the research group of Professor Frederic Gardes.

气体传感在实现用于监测不同来源排放的许多不同技术方面发挥着关键作用。光子气体传感器具有独特的优势，可以构建完全集成在单个芯片上的CMOS兼容，成本效益和便携式传感系统。为了在传感器之间有效地传输数据，到目前为止，电驱动调制依赖于由通过载流子耗尽、注入或积累对硅中的载流子密度的调制引起的无效折射率变化。然而，在非线性光学（NLO）聚合物中，电光（EO）效应源于有机分子的电子超极化性，这允许极高的调制速度。此外，有机分子的分子工程可以导致聚合物中极高的Pockels系数，其超过在光数据传输应用中使用的工业标准无机材料锂酸盐中可获得的值的10倍。因此，基于合并硅和聚合物的混合材料系统的光子器件是有吸引力的，因为它们将硅的强光限制能力与聚合物的上级NLO特性相结合，从而能够实现极快的调制，超低驱动功率和小的几何足迹，这将使光收发器的产生和遥感平台之间的数据传输。博士学位包括在合成和开发EO所需的单体和聚合物的制备，将在几个光子器件与Frederic Gardes教授的研究小组合作进行测试。