Energy bands in quantum confined silicon light-emitting diodes

H. Paul Maruska, Fereydoon Namavar, Nader M. Kalkhoran

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Measurements of the temperature dependence of the current-voltage characteristics of heterojunction light-emitting diodes fabricated by depositing indium tin oxide onto the surface of electrochemically etched p-type silicon (porous silicon) are presented, and the results are compared with those for adjacent devices formed on nonprocessed bulk silicon. The barrier height for the diodes which exhibit quantum confinement effects was determined to be 0.42 eV. Unlike the bulk silicon devices, the diodes prepared on porous silicon did not manifest a photovoltaic effect. These observations allow us to present a potential energy diagram for porous silicon heterojunction diodes which indicates barriers in both the conduction band and the valence band.

Original languageEnglish (US)
Pages (from-to)45-47
Number of pages3
JournalApplied Physics Letters
Volume63
Issue number1
DOIs
StatePublished - Dec 1 1993

Fingerprint

porous silicon
energy bands
light emitting diodes
diodes
heterojunctions
silicon
photovoltaic effect
indium oxides
tin oxides
conduction bands
potential energy
diagrams
valence
temperature dependence
electric potential

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Energy bands in quantum confined silicon light-emitting diodes. / Maruska, H. Paul; Namavar, Fereydoon; Kalkhoran, Nader M.

In: Applied Physics Letters, Vol. 63, No. 1, 01.12.1993, p. 45-47.

Research output: Contribution to journalArticle

Maruska, HP, Namavar, F & Kalkhoran, NM 1993, 'Energy bands in quantum confined silicon light-emitting diodes', Applied Physics Letters, vol. 63, no. 1, pp. 45-47. https://doi.org/10.1063/1.109745
Maruska, H. Paul ; Namavar, Fereydoon ; Kalkhoran, Nader M. / Energy bands in quantum confined silicon light-emitting diodes. In: Applied Physics Letters. 1993 ; Vol. 63, No. 1. pp. 45-47.
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