PHOTOELEMENT

摘要

Photocell has a transparent substrate with a transparent electrode coating of conductive oxide (I) with a work function of under 4.5 eV; a continuous crystalline, 1-5(2-3) mu m thick layer of p-Se, which forms a heterojunction in contact with (I); a thin Te layer forming a metallurgical bond between the (I) and Se layers; and an electrode of a metal with a work function of over 5.0 eV which is adjacent to the Se layer with a depletion zone extending inwards for >100 nm. from the heterojunction and with an O deficiency w.r.t. the Se at the ohmic contact. When exposed to solar or equiv. energy in an intensity of ca. 100mW/cm2, the energy conversion efficiency is >3.5%. Cell is used esp. as solar cell. Economical conversion of solar energy into electrical energy with good efficiency is possible.