Jump to main content
Jump to site search

Issue 70, 2015
Previous Article Next Article

Boosting, probing and switching-off visible light-induced photocurrents in eumelanin-porous silicon hybrids

Author affiliations

Abstract

A relatively intense photocurrent density up to 3.8 mA cm−2 was induced by visible light in n+-doped porous silicon (n-PSi) coated with a eumelanin thin film produced by ammonia-induced solid state polymerization (AISSP) of 5,6-dihydroxyindole (DHI). The photocurrent was not affected by acetic acid vapors but was irreversibly abated by gaseous ammonia. No detectable photocurrent was observed using p+-PSi as the inorganic substrate. These results point to eumelanin as a powerful enhancer of PSi photoresponse to visible light via hole-type electrical conduction.

Graphical abstract: Boosting, probing and switching-off visible light-induced photocurrents in eumelanin-porous silicon hybrids

Back to tab navigation

Article information


Submitted
08 May 2015
Accepted
19 Jun 2015
First published
19 Jun 2015

RSC Adv., 2015,5, 56704-56710
Article type
Paper
Author version available

Boosting, probing and switching-off visible light-induced photocurrents in eumelanin-porous silicon hybrids

A. Pinna, F. Simbula, D. Marongiu, A. Pezzella, M. d'Ischia and G. Mula, RSC Adv., 2015, 5, 56704
DOI: 10.1039/C5RA08605A

Social activity

Search articles by author

Spotlight

Advertisements