Pb-Ag-As-I-S chalcogenide glass was deposited on the surface of a light-addressable potentiometric sensor (LAPS) by means of the pulsed laser beam deposition (PLD) technique. The deposited layer worked as a Pb2+-ion-sensitive transducer, and the sensor showed Nernstian response with a sensitivity of 29±1mV/decade. The detection limit of the sensor for Pb2+-ions was 1×10-6mol/l. The response time does not exceed 50s for Pb2+-ion concentrations higher than 1×10-3mol/l, while for lower concentration range the response time increases up to 3-5 min.
- Chalcogenide glass
- Chemical sensor
- Lead sensitivity
- Light-addressable potentiometric sensor (LAPS)
- Pulsed laser deposition (PLD)