Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Sensors (Basel). 2009;9(11):9255-74. doi: 10.3390/s91109255. Epub 2009 Nov 18.

A CMOS Time-Resolved Fluorescence Lifetime Analysis Micro-System.

Author information

  • 1Institute for Integrated Micro and Nano Systems, The School of Engineering, The University of Edinburgh, The King's Buildings, Mayfield Road, Edinburgh, EH9 3JL, UK; E-Mails: Keith.Muir@ed.ac.uk (K.R.M.); Robert.Henderson@ed.ac.uk (R.K.H.); David.Renshaw@ee.ed.ac.uk (D.R.).

Abstract

We describe a CMOS-based micro-system for time-resolved fluorescence lifetime analysis. It comprises a 16 × 4 array of single-photon avalanche diodes (SPADs) fabricated in 0.35 μm high-voltage CMOS technology with in-pixel time-gated photon counting circuitry and a second device incorporating an 8 × 8 AlInGaN blue micro-pixellated light-emitting diode (micro-LED) array bump-bonded to an equivalent array of LED drivers realized in a standard low-voltage 0.35 μm CMOS technology, capable of producing excitation pulses with a width of 777 ps (FWHM). This system replaces instrumentation based on lasers, photomultiplier tubes, bulk optics and discrete electronics with a PC-based micro-system. Demonstrator lifetime measurements of colloidal quantum dot and Rhodamine samples are presented.

KEYWORDS:

CMOS; GaN; fluorescence lifetime; micro light-emitting diodes (micro-LEDs); micro-system; single-photon avalanche diodes

PMID:
22291564
[PubMed]
PMCID:
PMC3260641
Free PMC Article

Images from this publication.See all images (15)Free text

Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Multidisciplinary Digital Publishing Institute (MDPI) Icon for PubMed Central
    Loading ...
    Write to the Help Desk