Electroluminescence from porous silicon due to electron injection from solution

E.S. Kooij, R.W. Despo, J.J. Kelly

Research output: Contribution to journalArticleAcademic

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We report on the electroluminescence from p‐type porous silicon due to minority carrier injection from an electrolyte solution. The MV+• radical cation formed in the reduction of divalent methylviologen is able to inject electrons into the conduction band of crystalline and porous silicon. The electrochemistry of this redox process at silicon electrodes is briefly described, and electroluminescence due to recombination of the injected electrons with holes from the substrate is described. The results are discussed in terms of a semiconductor model.
Original languageEnglish
Pages (from-to)2552
Number of pages3
JournalApplied physics letters
Issue number19
Publication statusPublished - 1995


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