Speaker
Shiva Abbaszadeh
(University of California, Santa Cruz)
Description
In this talk, we discuss harnessing the unique properties of amorphous selenium (a-Se) and its alloy. Our exploration into Te alloying has revealed critical insights into defect states and their impact on electronic properties. By integrating density functional theory (DFT) simulations with experimental validation, we discovered that while Te incorporation reduces the band gap and mobility, the quantum efficiencies can be recovered at higher electric fields due to enhanced carrier escape from trap states. Furthermore, we demonstrated the viability of multilayer detector architectures, leveraging the combined strengths of a-Se and Se-Te to achieve superior sensitivity across a broad spectral range, particularly in the UV to red wavelengths.
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Authors
Akyl Swaby
Ms
Molly McGrath
Hamid Mirzanezhad
Katie Hellier
Shiva Abbaszadeh
(University of California, Santa Cruz)
