Giant photoresistivity and optically controlled switching in self-assembled nanowires

N. Kouklin, L. Menon, A. Z. Wong, D. W. Thompson, J. A. Woollam, P. F. Williams, S. Bandyopadhyay

Research output: Contribution to journalArticlepeer-review

128 Scopus citations


We report the observation of giant photoresistivity in electrochemically self-assembled CdS and ZnSe nanowires electrodeposited in a porous alumina film. The resistance of these nanowires increases by one to two orders of magnitude when exposed to infrared radiation, possibly because of real-space transfer of electrons from the nanowires into the surrounding alumina by photon absorption. This phenomenon has potential applications in "normally on" infrared photodetectors and optically controlled switches.

Original languageEnglish (US)
Pages (from-to)4423-4425
Number of pages3
JournalApplied Physics Letters
Issue number26
StatePublished - Dec 24 2001

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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