1 year ago
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Nanomaterials, Vol. 13, Pages 650: Spatially Resolved Photo-Response of a Carbon Nanotube/Si Photodetector
Nanomaterials doi: 10.3390/nano13040650
Authors: Daniele Capista Luca Lozzi Aniello Pelella Antonio Di Bartolomeo Filippo Giubileo Maurizio Passacantando
Photodetectors based on vertical multi-walled carbon nanotube (MWCNT) film-Si heterojunctions are realized by growing MWCNTs on n-type Si substrates with a top surface covered by Si3N4 layers. Spatially resolved photocurrent measurements reveal that higher photo detection is achieved in regions with thinner MWCNT film, where nearly 100% external quantum efficiency is achieved. Hence, we propose a simple method based on the use of scotch tape with which to tune the thickness and density of as-grown MWCNT film and enhance device photo-response.
