Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Publication date | 2008 |
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Host publication | 20th International Conference on Indium Phosphide and Related Materials, 2008. IPRM 2008. |
Place of Publication | New York |
Publisher | IEEE |
Pages | 331-333 |
Number of pages | 3 |
ISBN (print) | 9781424422586 |
<mark>Original language</mark> | English |
Event | 20th International Conference on Indium Phosphide and Related Materials - Versailles Duration: 25/05/2008 → 29/05/2008 |
Conference | 20th International Conference on Indium Phosphide and Related Materials |
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City | Versailles |
Period | 25/05/08 → 29/05/08 |
Conference | 20th International Conference on Indium Phosphide and Related Materials |
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City | Versailles |
Period | 25/05/08 → 29/05/08 |
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.