Strongly enhanced field-dependent single-molecule electroluminescence

Tae Hee Lee, Jose I. Gonzalez, Robert M. Dickson

Research output: Contribution to journalArticle

57 Scopus citations

Abstract

Individual, strongly electroluminescent Agn molecules (n = 2∼8 atoms) have been electrically written within otherwise nonemissive silver oxide films. Exhibiting characteristic single-molecule behavior, these individual room-temperature molecules exhibit extreme electroluminescence enhancements (> 104 vs. bulk and dc excitation on a per molecule basis) when excited with specific ac frequencies. Occurring through field extraction of electrons with subsequent reinjection and radiative recombination, single-molecule electroluminescence is enhanced by a general mechanism that avoids slow bulk material response. Thus, while we detail strong electroluminescence from single, highly fluorescent Agn molecules, this mechanism also yields strong ac-excited electroluminescence from similarly prepared, but otherwise nonemissive, individual Cu nanoclusters.

Original languageEnglish (US)
Pages (from-to)10272-10275
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Volume99
Issue number16
DOIs
StatePublished - Aug 1 2002

All Science Journal Classification (ASJC) codes

  • General

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