A CMOS time-resolved fluorescence lifetime analysis micro-system

B.R. Rae, K.R. Muir, Z. Gong, Jonathan McKendry, J.M. Girkin, E. Gu, D. Renshaw, M.D. Dawson, R.K. Henderson

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)
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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.
Original languageEnglish
Pages (from-to)9255-9274
Number of pages20
Issue number11
Publication statusPublished - 18 Nov 2009


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


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