Design of quantum well infrared photodetector for sensing surface enhanced Raman scattering spectrum of Troponin I enzyme

This investigation has explored the detectivity of Surface Enhanced Raman Scattering (SERS) of Troponin I enzyme (cTnI) for diagnosing heart attack or myocardial anfractuous.

In this article, we designed a photodetector to diagnose the cTnI by recording it's SERS spectrum. To achieve this goal, AlxGa1-xAs/GaAs quantum well photodetector was used. By optimizing the percentage of aluminum in barrier material and appointing a precise well width, the behavior of cTnI has been simulated through it's SERS spectrum.

By simulating and optimizing of quantum well photodetector width, the complete optical absorption and detectivity for cTnI SERS spectrum has been obtained.

A quantum well in the near infrared photodetector is a suitable device for diagnosing diseases by transforming optical signals into electrical signals. The optimum and proper design of photodetector obtain improved detectivity and precise detectivity process.