Modeling PIN Photodiodes. Roger W. Pryor, Ph.D.,VP Research Pryor Knowledge Systems, Inc.
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1 Presented at the COMSOL Conference 2010 Boston Modeling PIN Photodiodes,VP Research, Inc.
2 PIN Photodiode Modeling This paper presents a new AC/DC Conduction Current Module Model of a PIN Photodiode using COMSOL Multiphysics 4.0a and SPICE
3 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons:
4 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces
5 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+))
6 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range
7 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate)
8 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate) 5. Intrinsic (Thermally Activated) Carriers
9 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate) 5. Intrinsic (Thermally Activated) Carriers 6. Extrinsic (Artificially Added) Carriers
10 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate) 5. Intrinsic (Thermally Activated) Carriers 6. Extrinsic (Artificially Added) Carriers 7. Carrier Mobilities (Electrons(-), Holes(+))
11 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate) 5. Intrinsic (Thermally Activated) Carriers 6. Extrinsic (Artificially Added) Carriers 7. Carrier Mobilities (Electrons(-), Holes(+)) 8. Carrier Diffusivity (Electrons(-), Holes(+))
12 PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces 2. Dual Charge Carrier System (Electrons(-), Holes(+)) 3. Large Carrier Concentration Range 4. Carrier Lifetime (Recombination Rate) 5. Intrinsic (Thermally Activated) Carriers 6. Extrinsic (Artificially Added) Carriers 7. Carrier Mobilities (Electrons(-), Holes(+)) 8. Carrier Diffusivity (Electrons(-), Holes(+)) 9. Light Generated Carrier Pairs (Electrons(-), Holes(+))
13 Building the PIN Photodiode Model Model Builder Chart Model 1
14 Building the PIN Photodiode Model Parameters
15 Building the PIN Photodiode Model Model Builder Chart Model 1
16 Building the PIN Photodiode Model Variables
17 Building the PIN Photodiode Model PIN Photodiode Geometry
18 Building the PIN Photodiode Model PIN Photodiode Initialization
19 Building the PIN Photodiode Model PIN Photodiode Calculation
20 Building the PIN Photodiode Model PIN Photodiode Calculation & SPICE
21 PIN Photodiode Model Conclusions 1. AC/DC Conduction Current Semiconductor Models can be built in COMSOL Multiphysics 4.0a, using sufficient care. 2. Such Semiconductor Models can be used with SPICE, with proper boundary conditions.
22 Thank You!
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