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At least 433 records · Page 24

Optical analysis of photoemission

Photoemission optical analysis from thin films with uniaxial anisotropy, discussing reflectance, transmittance and divergence of Poynting vector

Pepper, S. V.↗

Photoemissive coating

Polystyrene coating is applied to holographic storage tube substrate via glow discharge polymerization in an inert environment. After deposition of styrene coating, antimony and then cesium are added to produce photoemissive layer. Technique is utilized in preparing perfectly organized polymeric films useful as single-crystal membranes.

Gange, R. A.↗

Photoemission from cesium-oxide-activated InGaAsP.

Zinc-doped InGaAsP quaternary III-V material of the proper composition range shows superior photoemission properties to either InGaAs or InAsP ternary material. The minority-carrier diffusion length in the quaternary material is at least as long as that in InAsP and much longer than observed in InGaAs. The barrier height at the InGaAsP-Cs2O interface is lowered by cooling, giving increased electron escape probability and new highs in quantum efficiency over a wide wavelength range. For example, a 1.06-micron quantum efficiency of 7.5%/incident photon was observed at -90 C.

James, L. W.↗

Photoemission from CsI - Calculation.

Calculations of optical and photoemission spectra for CsI based on first-order allowed transitions between Bloch-wave states are discussed. The calculations, utilizing energy-band data for CsI published by Onodera (1968), were performed by computer sampling of regions in the Brillouin zone. The photoelectric spectra of CsI, calculated on the basis of an interpolated band scheme, display features which are in general agreement with the experimentally determined photoelectric energy distribution curves.

Distefano, T. H.↗