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

本提案的目的是开发一种快速，刷新全息3D显示器在反射几何使用高灵敏度的光折变（PR）聚合物。目前可用的可刷新PR 3D显示器使用透射几何结构，刷新时间比许多显示器应用所需的要慢。PI提出了一种变革性的方法，使用载波倍增敏化剂来开发快速刷新的反射全息图。 通过适当地官能化敏化剂，将实现有效的电荷转移和与其他PR组分的优异的相容性。瞬态四波混频测量将用于确定样品的PR特性。 智力优势：该工作将为无机和石墨烯量子点敏化剂用于PR聚合物时载流子的产生、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，因为其操作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显示器将提供快速刷新时间，图像的许多视角和宽视角。更广泛的影响：全息反射式3D显示器对于包括娱乐、产品开发和城市规划在内的多种应用将非常有吸引力。此外，使用所提出的敏化剂增强载流子产生和分离也将对提高许多其他光电和光伏器件中的量子效率产生显著影响。此外，从该主题领域获得的理论和实验见解将被整合到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.