Abstract
The photoanodic dissolution of n-InP in hydrochloric acid (pH 0) was studied by a combination of dc measurements and optoelectrical impedance measurements. It was found that electron injection from decomposition intermediates into the conduction band competes with hole capture in three of the six electrochemical steps. From a detailed analysis of the optoelectrical impedance, the precise sequence of the electron injection steps was deduced and the rate constants for hole capture and electron injection could be estimated.
Original language | English |
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Pages (from-to) | 2559-2567 |
Number of pages | 9 |
Journal | Electrochimica Acta |
Volume | 38 |
Issue number | 17 |
DOIs | |
Publication status | Published - Dec 1993 |
Keywords
- anodic dissolution mechanisms.
- indium phosphide
- optoelectrical impedance spectroscopy
- photoelectrochemistry