Abstract

The thermal emission rates of electrons and holes of silver-doped silicon are measured by the dark current and the dark and photo capacitance transient techniques. The wider range of the present data (nine orders of magnitude) provides a more accurate determination of the thermal activation energies and the Arrhenius constants. Data fitted to et = A exp ( – ΔE/kT) give: (i) donor center: ΔE = ED – Ev = (405 ± 2) meV and A = (5.16 ± 0.55) × 1013 s−1 and (ii) acceptor center: ΔE = EC – EA = (593 ± 2) meV and A = (1.32 ± 0.11) × 1013 s−1. Die thermischen Emissionsraten von Elektronen und Löchern aus silberdotiertem Silizium wurden aus dem Dunkelstrom und mit Hilfe einer nichtstationären Dunkel- und Photokapazitätsmethode bestimmt. Der größere Bereich der vorliegenden Meßwerte (neun Größenordnungen) ermöglicht eine genauere Bestimmung der thermischen Aktivierungs-energien und der Arrhenius-Konstanten. Die an et = A exp ( – ΔE/kT) angepaßten Meßwerte ergeben (i) für das Donatorzentrum: ΔE = ΔED — ΔEy = (405 ± 2) meV und A = (5,16 ± 0.55) × 1013 s−1 und (ii) für das Akzeptorzentrum: ΔE = EC – EA = (593 ± 2) meV und A = (1,32 ± 0.11) × 1013 s−1.

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