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Gds2Mesh 是一个三维 TCAD 模型构建工具,它可以导入 GDSII 版图,然后结合预定义、可定制的工艺规则来生成三维器件模型。
0.13um CMOS 与非门标准单元版图(左图),和 Gds2Mesh 生成的 TCAD 模型(右图)
0.13um CMOS D-触发器标准单元版图(上图),和 Gds2Mesh 生成的 TCAD 模型(下图)
0.13um 工艺规则文件首先从版图中提取各个层次的几何信息,然后通过拉伸、以及其他的几何操作,来构造器件的三维几何体。掺杂分布的区域也需要基于版图信息来确定。
CSG 引擎可以生成倾斜的 STI 侧墙、圆滑的 STI 边角、鸟嘴、以及其它精细结构。网格是自动生成的,沟道、结附近的网格是细化的以保证仿真的准确性。生成的器件结构可以直接导入 Genius 执行器件仿真。
Gds2Mesh 还可以生成 GDML 格式的文件,然后导入VisualParticle/GSeat执行粒子轨迹仿真。GDML 是由Geant4定义的一种标准几何格式。
WebTCAD is the web version of Cogenda's VisualTCAD, a powerful tool of TCAD process and device simulation. It's mainly designed for teaching purpose, aimed at demonstrating/simulating industry-standard semiconductor fabricating and working process. The intuitive graphic UI, step-by-step workflow, and fully featured post process ability make it much easier for university teachers and students to use.
A section (300x300 um) of a solar cell with inverted pyramid surface texturing, with over 600,000 mesh nodes.
Anti-reflection coating present at the front surface is taken into account in the simulation.