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Proceedings Paper

Two-color amorphous silicon photodiode for multicolor detection of labeled DNA
Author(s): D. Caputo; G. de Cesare; A. Nascetti; R. Negri; R. Scipinotti
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Paper Abstract

In this work we present a system for the detection of labeled DNA by means of a two-color amorphous silicon photosensor. The device is a p-i-n-i-p structure, whose spectral response is controlled by tuning the voltage applied to its electrodes. The thicknesses of the different layers has been optimized to match the emission spectra of the two utilized fluorochromes. Minima detectable concentrations range in the order of few nmol/l. Very good linearity in the photosensor responses, comparable with those of commercial equipment, has been achieved.

Paper Details

Date Published: 22 May 2007
PDF: 7 pages
Proc. SPIE 6592, Bioengineered and Bioinspired Systems III, 65920C (22 May 2007); doi: 10.1117/12.721997
Show Author Affiliations
D. Caputo, Univ. degli Studi di Roma La Sapienza (Italy)
G. de Cesare, Univ. degli Studi di Roma La Sapienza (Italy)
A. Nascetti, Univ. degli Studi di Roma La Sapienza (Italy)
R. Negri, Univ. degli Studi di Roma La Sapienza (Italy)
R. Scipinotti, Univ. degli Studi di Roma La Sapienza (Italy)

Published in SPIE Proceedings Vol. 6592:
Bioengineered and Bioinspired Systems III
Paolo Arena; Ángel Rodríguez-Vázquez; Gustavo Liñán-Cembrano, Editor(s)

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