Encapsulated perovskite in NiO nanotube for topological meta-photonic devices

光子晶体是用于操纵光传播和光学应用的周期性结构，其类似于用于电子学的半导体晶体，例如硅。钙钛矿是一种半导体材料，在太阳能电池和其他器件中具有潜在的应用。在这个项目中，PI将联合收割机钙钛矿与光子晶体结合，用于光的产生和吸收。钙钛矿将被限制在微小的管状材料中，以提高它们在强光、潮湿和氧气等恶劣环境下的稳定性。光子晶体将以这样的方式制造，即使光子晶体具有制造缺陷，光也将被局部化和放大。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。该项目将通过丰富研究生和本科生（包括少数民族和代表性不足的学生）的课程设置，增加科学研究的新能力，扩大学生可获得的实验室练习范围，并将他们培养为具有竞争力的下一代纳米技术，清洁能源，光子技术劳动力，来提高教育竞技场的能力。它还包括通过沃斯堡科学和历史博物馆针对公众的外联活动。技术部分目标是设计，制造和表征具有高吸收和拓扑光子器件的元光子器件，该器件使用NiO纳米管中封装的钙钛矿，具有对局部无序免疫的拓扑配置。将采用三种方法：PI将研究钙钛矿/NiO纳米管在多光子曝光下的光稳定性，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谱中的束缚态将用于设计具有非常高品质因子的谐振腔，用于激发钙钛矿/NiO纳米管的活性介质。无序或打破面内反转对称性将被纳入非对称梯度光子超晶体中，以实现连续介质中的准束缚态，这将不受NiO纳米管的制造缺陷的影响;单个NiO纳米管中的高阶Mie共振和连续介质中的束缚态将被用于实现在非对称梯度光子超晶体中图案化的钙钛矿/NiO纳米管中的宽带高吸收。其目标是在梯度光子超晶体中图案化的钙钛矿/NiO纳米管中实现高效率的太阳能电池和电泵浦激光。该研究将对稳定钙钛矿、微/纳米腔激光器、集成光路、微型光学器件和光伏器件中的激光介质产生重大影响。该奖项反映了NSF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.