В галерее представлены файлы учебных моделей и приложений COMSOL Multiphysics® для решения электротехнический, механических, акустических, гидродинамических, тепловых и химических задач. Используйте эти примеры как отправную точку в ваших собственных исследованиях, скачивайте учебные модели, демонстрационные приложения и подробные описания к ним. Чтобы найти модели и приложения, относящиеся к сфере ваших интересов, воспользуйтесь функцией быстрого поиска, а затем войдите в систему или создайте учётную запись COMSOL® Access, связанную с действующей лицензией COMSOL®, чтобы скачать .MPH-файлы моделей. Обращаем внимание, что большую часть этих примеров можно также найти во встроенной в COMSOL Multiphysics® библиотеке приложений Application Libraries. Открыть библиотеку приложений можно через меню File.

Semiconductor Modulex

3D Analysis of a Bipolar Transistor

This model shows how to set up a 3D simulation of a n-p-n bipolar transistor. It is a 3D version of the device shown in the Bipolar Transistor model, and demonstrates how to extend semiconductor modeling into 3D using COMSOL Multiphysics. As in the 2D version of this model, the device ... Читать дальше

GaAs PIN Photodiode

This simple model demonstrates how to use the Semiconductor Optoelectronics interfaces to model a simple GaAs PIN diode structure. Both the stimulated and spontaneous emission in the semiconductor are accounted for. The corresponding absorption of the light and the associated change in ... Читать дальше

Si Solar Cell 1D

This tutorial uses a simple 1D model of a silicon solar cell to illustrate the basic steps to set up and perform a device physics simulation with the Semiconductor Module. A user-defined expression is used for the photo-generation rate and the result shows typical I-V and P-V curves of ... Читать дальше

Thermal Analysis of a Bipolar Transistor

This model demonstrates how to couple the Semiconductor interface to the Heat Transfer in Solids interface. A thermal analysis is performed on the existing bipolar transistor model in the case when the device is operated in the active-forward configuration. The Semiconductor interface ... Читать дальше

A Cross-Bridge Kelvin Resistor Model for the Extraction of Specific Contact Resistivity

This benchmark example builds two models of a cross-bridge Kelvin resistor used for extracting the specific contact resistivity. The first model simulates the system in 3D, using the contact resistance feature built in the Semiconductor interface. The other model is a 2D approximation of ... Читать дальше

InGaN/AlGaN Double Heterostructure LED

This model simulates a GaN based light emitting diode. The emission intensity, spectrum, and quantum efficiency are calculated as a function of the driving current. Direct radiative recombination across the band gap is modeled, as well as non-radiative Auger and trap-assisted ... Читать дальше

Bipolar Transistor

This model shows how to set up a simple Bipolar Transistor model. The output current-voltage characteristics in the common-emitter configuration are computed and the common-emitter current gain is determined. Читать дальше

Si Solar Cell with Ray Optics

This app demonstrates the following: Multiple components (1D and 3D) in a single app Using the same choice list in the app as in the model using Data Access functionality Output numerical results for a specific time step using a combo box The app combines the Ray Optics Module and ... Читать дальше

DC Characteristics of a MOS Transistor (MOSFET)

This model calculates the DC characteristics of a simple MOSFET. The drain current versus gate voltage characteristics are first computed in order to determine the threshold voltage for the device. Then the drain current vs drain voltage characteristics are computed for several gate ... Читать дальше

GaAs P-N Junction Infrared LED

This model simulates an LED that emits in the infrared part of the electromagnetic spectrum. The device structure is made up of a single p-n junction formed by a layer of p-type doping near the top surface of an otherwise n-type wafer. This kind of device geometry is simple and cheap to ... Читать дальше

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