Spectral Response of Al/Si Photodiode as IR Sensor

Details Spectral Response of Al/Si Photodiode as IR Sensor Spectral Response of Al/Si Photodiode as IR Sensor

2001-07-11

arxiv.org/abs/cond-mat/0107213v1

Physics

Condensed Matter

3 pages, 4 figures, Indonesian German Conference, Bandung, Indonesia, July 11-13, 2001

Scientific paper

Al/Si photodiode were prepared by successive of deposition of Aluminum thin films on p-type Si (100) using coprecipitation method by evaporator in vacuum 2.0E-4 torr. The measured signals are attributed to a spectral response, which appears in the studied photodiode. The photodiode Al/Si is sensitivity over a broad range of IR wavelengths from 800 to 1000 nm, when illuminated with discontinuous light at chopper frequency 200 Hz. The spectral response distribution that sensitivity peaks appear when the measurement was performed using the ac mode. The peak was at 981 nm, the incident radiation power (Pi) at the surface was 25 microwatt/cm2, the current signal (Ip) was 12.2 nA, the quantum efficiency was 6.16 % and the current sensitivity was 0.488 nA/microwatt/cm2.

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