Encapsulated perovskite in NiO nanotube for topological meta-photonic devices

光子晶体是一种用于控制光传播和光学应用的周期性结构，类似于半导体晶体，如用于电子的硅。钙钛矿是一种半导体材料，在太阳能电池和其他设备中具有潜在的应用前景。在这个项目中，pi将把钙钛矿与光子晶体结合起来，用于光的产生和吸收。为了提高钙钛矿在强光、潮湿和氧气等恶劣环境下的稳定性，钙钛矿将被限制在微小的管状材料中。即使光子晶体存在制造上的缺陷，也可以使光被局部化和放大。如果成功，该项目将导致高效率的集成激光器和太阳能电池设备。该项目将通过丰富面向毕业生和本科生（包括少数民族和代表性不足的学生）的项目，增加科学研究的新能力，扩大学生可用的实验室练习范围，并将他们培训为具有竞争力的下一代纳米技术、清洁能源和光子学技术劳动力，从而提高教育领域的能力。它还包括通过沃斯堡科学与历史博物馆针对普通公众的外展活动。技术部分目标是设计、制造和表征具有高吸收的元光子器件和拓扑光子器件，这些器件使用具有免疫局部失调拓扑结构的NiO纳米管中的封装钙钛矿。将采用三种方法：pi将研究钙钛矿/NiO纳米管在多光子暴露下的光稳定性，以及它们在发光器件中的光致发光和电致发光；梯度光子超晶体中连续统的束缚态将应用于钙钛矿/NiO纳米管活性介质激光的高质量谐振腔的设计。在不对称梯度光子超晶体中引入面内反转对称性的紊乱或破坏，从而在连续介质中实现准束缚态，从而不受NiO纳米管制造缺陷的影响；在不对称梯度光子超晶体中，钙钛矿/NiO纳米管的高阶mie共振和束缚态将被用于实现宽带高吸收。目标是在梯度光子超晶体中形成的钙钛矿/NiO纳米管中实现高效太阳能电池和电泵浦激光器。本研究将对稳定钙钛矿激光介质、微/纳米腔激光器、集成光电路、微型光学器件、光伏器件等领域产生重要影响。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

A photonic crystal is a periodic structure for manipulating light propagation and optical applications, which is analogous to semiconductor crystals such as silicon for electronics. A perovskite is a semiconductor material with potential applications in solar cells and other devices. In this project, PIs will combine perovskites with photonic crystals for light generation and absorption. The perovskites will be confined inside tiny tubular material in order to improve their stability when they are under harsh environment such as intense light, moisture, and oxygen. The photonic crystal will be made in a way that light will be localized and amplified even if the photonic crystal has a fabrication imperfection. If successful, the project will lead to high-efficiency integrated lasers and solar cell devices. This project will enhance the abilities in the education arena by enriching program offerings for graduates and undergraduates, including minority and underrepresented students, adding new capabilities in scientific research, expanding the range of laboratory exercises available to students, and training them as competitive next-generation workforce in nanotechnology, clean-energy, photonics technology. It also includes outreach activities targeting the general public via the Fort Worth Museum of Science and History. Technical partThe objective is to design, fabricate and characterize meta-photonic devices with high absorption and topological photonic devices using encapsulated perovskites in NiO nanotubes with a topological configuration that is immune to local disorders. Three approaches will be used: PIs will study the photo-stability of perovskites/NiO nanotubes under multiple-photon exposure, and their photoluminescence and electroluminescence in light emitting devices; Bound states in the continuum in the graded photonic super-crystal will be applied to the design of the resonant cavity with a very high quality factor for the lasing of the active medium of perovskites/NiO nanotubes. Disorders or broken in-plane inversion symmetry will be incorporated into asymmetric graded photonic super-crystals to achieve quasi bound states in the continuum that will be immune to the fabrication imperfection of NiO nanotubes; High-order Mie-resonances in individual NiO nanotube and bound states in the continuum will be utilized to achieve the broadband high absorption in perovskite/NiO nanotubes patterned in asymmetric graded photonic super-crystal. The goal is to achieve high-efficiency solar cells and electrically pumped laser in perovskite/NiO nanotubes patterned in the graded photonic super-crystal. The proposed research will have a significant impact on lasing medium in stabilized perovskites, micro/nano-cavity lasers, integrated optical circuit, miniature optical devices, and photovoltaic devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.