▎ 摘　　要

NOVELTY - The method involves turning on and off an electrical or optical source for input time in association to a subject optoelectronic device with a composite interface. Resulting transient photocurrent is measured from the subject optoelectronic device to generate measurement data. Fourier Transform calculations are performed on the transient photocurrent measurement data to determine a frequency response of the subject optoelectronic device. Respective different voltage biases are applied to the subject optoelectronic device. USE - Method for determining a frequency response of a subject optoelectronic device i.e. colloidal quantum dot/epitaxial graphene/silicon carbide device (claimed), with a composite interface during spatially resolved Fourier Transform impedance spectroscopy (FTIS) for displays, photodetectors, and solar energy conversion devices. ADVANTAGE - The method enables spatially mapping and quickly building the frequency response of optoelectronic devices for optimal harmonization during spatial mapping experiments with optical probes, thus reducing user time and operation time. The method enables increasing charge separation at the interface through optimized band alignment and surface treatment steps, thus reducing resistivity of the film and increasing film thickness, while maintaining sufficiently large diffusion length DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) an optical probe method for spatially mapping frequency response at selected locations relative to a heterojunction of a subject optoelectronic device; (2) a diagnostic method for rapid spatial mapping for composite interfaces of a subject optoelectronic device. DESCRIPTION OF DRAWING(S) - The drawing shows a graph representing relationship between reported and projected energy consumption values of fuel.