Abstract
This paper is a review of the known effects of hydrogen in crystalline semiconductor grain-boundaries and interfaces and of the recent progress in the fundamental study of the mechanisms of hydrogen-interfaces interactions. The interfaces considered are: grain boundaries of polycrystalline semiconductors, semiconductor/semiconductor or semiconductor/metal interfaces, silicon/silicon oxide interfaces (including precipitated silicon oxide interfaces), and semiconductor/electrolyte interfaces. The influence of structural and electronic defects on the hydrogen passivation processes is discussed. Emphasis is laid upon the role of segregated impurities on the electrical activity of interfaces and its subsequent passivation by hydrogen. Some ideas are given for development of experimental and theoretical research to improve the understanding of the mechanisms of hydrogen action.
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