CMOS buried quad p-n junction photodetector for multi-wavelength analysis

Optics Express
Charles RichardPaul G Charette

Abstract

This paper presents a buried quad p-n junction (BQJ) photodetector fabricated with a HV (high-voltage) CMOS process. Multiple buried junction photodetectors are wavelength-sensitive devices developed for spectral analysis applications where a compact integrated solution is preferred over systems involving bulk optics or a spectrometer due to physical size limitations. The BQJ device presented here is designed for chip-based biochemical analyses using simultaneous fluorescence labeling of multiple analytes such as with advanced labs-on-chip or miniaturized photonics-based biosensors. Modeling and experimental measurements of the spectral response of the device are presented. A matrix-based method for estimating individual spectral components in a compound spectrum is described. The device and analysis method are validated via a test setup using individually modulated LEDs to simulate light from 4-component fluorescence emission.

References

Apr 18, 2000·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·H TsuruiT Shirai

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Citations

Nov 16, 2013·IEEE Transactions on Biomedical Circuits and Systems·Derek HoRoman Genov
Aug 31, 2021·World Journal of Gastrointestinal Oncology·Toru ChibaTomohiko Akahoshi

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