Highly Efficient Planar Hot Electron Emitters Based on Ultrathin Pyrolyzed Polymer Films.

ABSTRACT: Miniaturized integrated hot electron emitters are highly sought after for application in chemical analytics and field-applicable systems. Here, we present the use of ultrathin pyrolyzed polymer films (PPFs) as the gate electrode, enabling the fabrication of highly efficient planar hot electron emitters (PHEEs). The thickness of the PPF was observed to be roughly 1 nm across a full 4" wafer, approaching the monolayer limit. Conductivities of up to 3.5 × 10⁴ S/m at pyrolysis temperatures of only 900 °C were measured, representing a 2-fold increase compared to bulk values. This renders an easily accessible 2D material with high electron transparency. Thus, the PHEE exhibits very high transfer ratios of up to 31% and proves to be stable at high pressures over an extended period of t

SUBMITTER: Herdl F 

PROVIDER: S-EPMC12163920 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature