Hybrid perovskite integrated electro-optic modulator

调制器是硅光子学芯片的核心器件，用于将电信号转换为光信号。目前的技术是基于硅pn结。然而，这些设备无法提供低成本，小占地面积和低驱动电压的组合。存在其他具有提供最佳性能和低成本组合潜力的调制器技术，但材料与硅光子器件架构不兼容。有机物的稳定性有限。混合钙钛矿是一种新型材料，在高效发光和光伏方面有广泛的应用。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，合成它们并将它们整合到钙钛矿的层状结构中。我们将对钙钛矿单晶的电光性质进行表征。材料和生长过程的优化将导致电光材料的演示，该材料结合了大响应与低功耗和稳定性。我们将设计硅光子芯片，其中调制器占地面积减少，允许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。拟议的研究和发展将最终展示用于光通信的低功率硅光子芯片。

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.