Modeling PIN Photodiodes. Roger W. Pryor, Ph.D.,VP Research Pryor Knowledge Systems, Inc.

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Transcription:

Presented at the COMSOL Conference 2010 Boston Modeling PIN Photodiodes,VP Research, Inc.

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

PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons:

PIN Photodiode Modeling Overview Semiconductor device physics and the associated models are inherently complex for the following reasons: 1. Long-Range Electrodynamic Forces

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(+))

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

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)

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

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

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(+))

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(+))

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(+))

Building the PIN Photodiode Model Model Builder Chart Model 1

Building the PIN Photodiode Model Parameters

Building the PIN Photodiode Model Model Builder Chart Model 1

Building the PIN Photodiode Model Variables

Building the PIN Photodiode Model PIN Photodiode Geometry

Building the PIN Photodiode Model PIN Photodiode Initialization

Building the PIN Photodiode Model PIN Photodiode Calculation

Building the PIN Photodiode Model PIN Photodiode Calculation & SPICE

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.

Thank You!