Mun, S. C. Liew Tat and Tan, C. H. and Marshall, A. R. J. and Goh, Y. L. and Tan, L. J. J. and David, J. P. R. (2008) Design considerations for In0.52Al0.48As based avalanche photodiodes. In: 20th International Conference on Indium Phosphide and Related Materials, 2008. IPRM 2008. IEEE, New York, pp. 331-333. ISBN 9781424422586Full text not available from this repository.
We provide a set of design considerations for In0.52Al0.48As based avalanche photodiodes (APDs) in an attempt to reduce the excess noise factor. We compared the effects of tapered electric fields to constant electric fields, in APDs with avalanche regions of 0.2 mu m and 2.0 mu m, on multiplication and excess noise factors using a Simple Monte Carlo model. We found that diodes having p(+)-n-n(+) doping profiles produce the lowest and highest excess noise in diodes with avalanche regions of 0.2 mu m and 2.0 mu m respectively. However due to the higher peak electric fields in thin diodes with field gradients causing tunneling current to become significant, the ideal p(+)-i-n(+) diodes still provide the overall preferred structure. We also observed that different electric field gradients in the p(+) cladding regions have negligible effect on the excess noise factors.
|Item Type:||Contribution in Book/Report/Proceedings|
|Uncontrolled Keywords:||In0.52Al0.48As ; Monte Carlo modeling ; avalanche photodiodes ; excess noise factor ; impact ionization|
|Subjects:||Q Science > QC Physics|
|Departments:||Faculty of Science and Technology > Physics|
|Deposited On:||28 May 2012 13:41|
|Last Modified:||03 Nov 2015 20:24|
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