Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Modeling of avalanche multiplication and excess noise factor in In0.52Al0.48As avalanche photodiodes using a simple Monte Carlo model
AU - Mun, S. C. Liew Tat
AU - Tan, C. H.
AU - Goh, Y. L.
AU - Marshall, A. R. J.
AU - David, J. P. R.
PY - 2008/7/1
Y1 - 2008/7/1
N2 - A simple Monte Carlo model has been developed to simulate the avalanche multiplication process in In0.52Al0.48As. The model reproduces avalanche multiplication and excess noise factor measured on a wide range of In0.52Al0.48As p(+)-n-n(+), n(+)-n-p(+), and p(+)-n(+) diodes and confirms that very low excess noise factor can be obtained using pure electron injection in very thick diodes with avalanche region greater than 2.21 mu m or in very thin diodes with avalanche region lesser than 0.11 mu m. In addition we investigated the effect of an electric field gradient in the avalanche region of avalanche photodiodes and found that the excess noise factor can be reduced with electric field gradients. However in thin diodes with avalanche region lesser than 0.20 mu m, the onset of tunneling current negates the excess noise reduction achieved using the electric field gradient. Therefore ideal p(+)-i-n(+) diodes still provide the overall preferred structure. (c) 2008 American Institute of Physics.
AB - A simple Monte Carlo model has been developed to simulate the avalanche multiplication process in In0.52Al0.48As. The model reproduces avalanche multiplication and excess noise factor measured on a wide range of In0.52Al0.48As p(+)-n-n(+), n(+)-n-p(+), and p(+)-n(+) diodes and confirms that very low excess noise factor can be obtained using pure electron injection in very thick diodes with avalanche region greater than 2.21 mu m or in very thin diodes with avalanche region lesser than 0.11 mu m. In addition we investigated the effect of an electric field gradient in the avalanche region of avalanche photodiodes and found that the excess noise factor can be reduced with electric field gradients. However in thin diodes with avalanche region lesser than 0.20 mu m, the onset of tunneling current negates the excess noise reduction achieved using the electric field gradient. Therefore ideal p(+)-i-n(+) diodes still provide the overall preferred structure. (c) 2008 American Institute of Physics.
U2 - 10.1063/1.2952003
DO - 10.1063/1.2952003
M3 - Journal article
VL - 104
SP - -
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 1
M1 - 013114
ER -