High-Performance Planar Broadband Hot-Electron Photodetection through Platinum–Dielectric Triple Junctions
Xiaoyan Yang,
Yongmei Wang,
Yaoyao Li
et al.
Abstract:Recently, planar and broadband hot-electron photodetectors (HE PDs) were established but exhibited degraded performances due to the adoptions of the single-junction configurations and the utilizations of absorbable films with thicknesses larger than the electronic mean free path. In this work, we present a five-layer design for planar HE PDs assisted by triple junctions in which an ultrathin Pt layer dominates the broadband and displays strong optical absorption (>0.9 from 900 nm to 1700 nm). Optical studie… Show more
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