Perovskite-nanocrystal-enhanced vertically stacked photodiode image sensor for wavelength-resolved UV imaging
Chang, Haoxiang
This item's files can only be accessed by the System Administrators group.
Permalink
https://hdl.handle.net/2142/130219
Description
Title
Perovskite-nanocrystal-enhanced vertically stacked photodiode image sensor for wavelength-resolved UV imaging
Author(s)
Chang, Haoxiang
Issue Date
2025-07-25
Director of Research (if dissertation) or Advisor (if thesis)
Gruev, Viktor
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Perovskite nanocrystals
Nanomaterials
Multispectral UV imaging
Biosensors
Fluorescence imaging
Abstract
Real-time ultraviolet (UV) image sensing technology presents profound potential in multiple areas, including biomedical diagnostics, industrial production, and animal science. Current UV imaging systems are mostly monochromatic, hence insensitive to the spectral information across the UV wavelengths. This thesis introduces a novel imaging system capable of multispectral UV imaging with the ability to distinguish between different UV wavelengths by enhancing a three-layer vertically stacked photodiode complementary metal oxide semiconductor (CMOS) image sensor with specially manufactured and tuned perovskite nanocrystals (PNCs). The effectively extended multi-channel quantum efficiency (QE) in the UV range enabled experimentally proved precise separation of 11 distinct UV wavelengths across the UVA and UVB range, an unachieved level with the unmodified image sensor. This novel imaging system presents meaningful applications for clinical and industrial contexts, including the in vitro characterization of biomarkers with UV fluorescence emission signatures.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
