Hybrid perovskite integrated electro-optic modulator

调制器是硅光子芯片中的核心器件，将电信号转换为光信号。目前的技术是基于硅pn结。然而，这些器件不能提供低成本、小占地面积和低驱动电压的组合。存在具有提供最佳性能和低成本的组合的潜力的其他调制器技术，但是材料与硅光子器件架构不兼容。有机物的稳定性有限。 混合钙钛矿是一类新的材料，在高效发光和光致发光中找到应用。这些溶液处理的材料可以在纳米尺度上进行工程设计，以优化光电性能。在这个项目中，我们将使用混合钙钛矿来稳定有机分子，以创造高效的电光材料。我们将设计最佳的电光分子，合成它们并将它们纳入钙钛矿的层状结构中。我们将表征钙钛矿单晶的电光特性。材料和生长过程的优化将导致电光材料的展示，这些材料将大响应与低功耗和稳定性相结合。我们将设计硅光子芯片，其中调制器的足迹减少，允许的混合钙钛矿材料的性能。我们将证明片上混合钙钛矿提供了低功耗操作的手段。拟议的研究和开发将最终展示用于光通信的低功耗硅光子芯片。

Modulators are core devices in silicon photonics chips, converting electrical signals to optical signals. Current technologies are based on silicon pn junctions. However, these devices fail to provide a combination of low cost, small footprint and low driving voltages. Other modulator technologies exist that have the potential to provide a combination of optimal performance and low cost, but the materials are incompatible with silicon photonics device architectures. Organics suffer from limited stability. Hybrid perovskites are a new class of materials that find applications in efficient light emission and photovoltaics. These solution-processed materials can be engineered on the nano-scale to optimize the optoelectronic properties. In this project, we will use hybrid perovskites to stabilize organic molecules in order to create efficient electro-optic materials. We will design optimal electro-optic molecules, synthesize them and incorporate them in the layered structure of the perovskites. We will characterize single crystals of the perovskites for their electro-optic properties. Optimization of the materials and growth processes will lead to the demonstration of electro-optic materials that combine large responses with low power consumption and stability. We will design silicon photonics chips in which the modulator footprint is reduced, permitted by the performance of the hybrid perovskite materials. We will demonstrate that the on-chip hybrid perovskites provide the means for low power operation. The proposed research and development will culminate in the demonstration of low-power silicon photonics chips for optical communications.