1.5 Micron Photocathode Development.

Abstract

In the first quarter the experimental approach which hopefully will lead to an efficient 1.5 micron photocathode was tested at 1.06 microns in InAs(0.15)P(0.85)-Cs20. Efficient response out to 1.1 microns was obtained. The 0.8% quantum efficiency obtained at 1.06 microns represented more than an order of magnitude improvement in yield over existing S-1 photosurfaces. The InAsP-Cs20 investigations were continued and lower-bandgap absorbing-materials were used in an effort to push the long-wavelength response further into the infrared. Low-work-function Cs3Sb surfaces were also investigated.

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1969
Accession Number
AD0720479

Tags

DTIC Thesaurus Topics

  • Efficiency
  • Long Wavelengths
  • Materials
  • Photocathodes
  • Quantum Efficiency
  • Two-Dimensional Materials
  • Work Functions

Readers

  • Electronics Engineering
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Spectroscopy.

Technology Areas

  • Quantum Computing