Bio-inspired Multispectral-Polarization Imaging Devices with Perovskite Nanocrystals for UV and Visible Spectral Sensing
Abstract
Our research objective is to investigate and design a single-chip bio-inspired imaging sensors that integrate two-color perovskite nanocrystals (PNCs) and metasurface optical filters with vertically stacked silicon imaging technology, to capture both polarization and multispectral information spanning from deep UV and possibly X-rays to the visible spectrum. PNCs offer unique optoelectronic properties, such as high quantum yield, broad absorption spectra, and tunable bandgap, making them a promising material for imaging sensors. Integrating PNCs with CMOS imaging technology has the potential to improve UV spectral selectivity and develop highly sensitive imaging sensors. Additionally, meta-surface optical filters can enhance the sensor s performance by providing spectral selectivity and polarization sensitivity. Our proposed novel imaging device will enable us to delve deeper into two fundamental principles of PNCs. The first objective is to comprehensively understand the impact of surface passivation and polymer coatings on the optoelectronic properties of PNCs, including their stability and quantum efficiency. Our second objective is to explore excited-state energy transfer and fluorescence quenching in two-color PNCs. By investigating how the confinement of two-color PNCs affects excited-state energy transfer and fluorescence quenching, we can gain insights into the physical mechanisms that govern their behavior. This knowledge will be crucial in developing improved PNC-based devices. Amidst the current global challenges and restructuring in the semiconductor industry, our pro- posed research aims to explore novel fabrication techniques for sensitive imaging devices to address national security challenges. The integration of nano-materials, meta-materials, and vertically stacked photodetectors will push the boundaries beyond the current state-of-the-art semiconductor technology, providing much-needed innovation in this industry.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2025
- Source ID
- FA95502410112
Entities
People
- Viktor Gruev
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Illinois Urbana–Champaign