CAREER:Fast refreshing holographic 3D display using highly sensitive photorefractive polymer

这项提议的目标是开发一种使用高灵敏度光折变(PR)聚合物的快速、刷新的反射几何全息3D显示器。目前可用的可刷新PR 3D显示器使用具有比许多显示器应用所需的刷新时间更慢的传输几何结构。PI提出了一种变革性的方法，使用载体倍增感光剂来开发快速刷新的反射全息图。通过对敏化剂进行适当的官能化处理，可以实现有效的电荷转移和与其他PR组分的良好相容性。将使用瞬变四波混频测量来确定样品的PR性质。智力优势：建议的工作将为在PR聚合物中使用无机和石墨烯量子点敏化剂时载体的产生、增殖和分离提供新的见解。所提出的载流子倍增方法适用于PR聚合物，因为它的运行通常需要能够快速分离电荷的外部电场。此外，使用这种高度优化的样品开发的反射几何全息3D显示将提供快速刷新时间、多个图像视角和宽视角。更广泛的影响：全息反射3D显示器将在娱乐、产品开发和城市规划等多个应用中非常有吸引力。此外，利用所建议的敏化剂增强载流子的产生和分离将对提高许多其他光电子器件和光伏器件的量子效率具有重要影响。此外，从主题领域获得的理论和实验见解将被整合到一门聚合物光子学课程中。

The objective of this proposal is to develop a fast, refreshing holographic 3D display in reflection geometry using highly sensitive photorefractive (PR) polymers. Currently available refreshable PR 3D display uses transmission geometry with refreshing time slower than that required for many display applications. The PI proposes a transformative approach that uses carrier multiplying sensitizers to develop fast refreshing reflection holograms. Efficient charge transfer and excellent miscibility with other PR components will be achieved by suitably functionalizing the sensitizer. Transient four-wave mixing measurements will be used to determine the PR properties of the samples. Intellectual Merits: The proposed work will provide new insights into carrier generation, multiplication and separation when inorganic and graphene quantum dot sensitizers are used in PR polymer. The proposed approach of carrier multiplication is appropriate for PR polymers since an external electric field capable of rapidly separating the charges is typically required for its operation. In addition, holographic 3D display in reflection geometry developed using this highly optimized sample will provide fast refreshing time, many perspectives of the image and wide viewing angles. Broader Impact: A holographic reflection 3D display will be very attractive for several applications including entertainment, product development and urban planning. Furthermore, enhancement of carrier generation and separation using the proposed sensitizers will have a significant impact on improving the quantum efficiency in many other optoelectronic and photovoltaic devices as well. In addition, the theoretical and experimental insight gained from the subject area will be integrated into a polymer photonics course.