Photoelectron emitting member and uses thereof.

摘要

A photoelectron emitting member (10) comprises a matrix (11) that is at least composed of a material capable of transmitting ultraviolet rays and a material (12) that is provided on the surface of said matrix or in its neighborhood and which emits photoelectrons (7) upon irradiation (14) with ultraviolet rays or sunlight, said member emitting photoelectrons upon irradiation with ultraviolet rays or sunlight in an electric field from the side opposite to the irradiated side. The member permits efficient utilization of the energy of ultraviolet rays. When sunlight is applied to the member to have it emit photoelectrons, particles can be electrically charged with energy costs being reduced to substantially zero. <IMAGE>