III-V material based digital alloy Avalanche Photodiodes (APDs) have recently been found to exhibit low noise similar to Silicon APDs. The III-V materials can be chosen to operate at any wavelength in the infrared spectrum. In this work, we present a physics-based SPICE compatible compact model for APDs built from parameters extracted from an Environment-Dependent Tight Binding (EDTB) model calibrated to ab-initio Density Functional Theory (DFT) and Monte Carlo (MC) methods. Using this approach, we can accurately capture the physical characteristics of these APDs in integrated photonics circuit simulations.

中文翻译：

---

基于物理的多尺度紧凑模型 别针 雪崩光电二极管

最近发现基于 III-V 族材料的数字合金雪崩光电二极管 (APD) 具有类似于硅 APD 的低噪声。可以选择 III-V 族材料以在红外光谱中的任何波长下工作。在这项工作中，我们提出了一个基于物理的 SPICE 兼容紧凑型 APD 模型，该模型由从环境相关紧密绑定 (EDTB) 模型中提取的参数构建从头开始密度泛函理论 (DFT) 和蒙特卡罗 (MC) 方法。使用这种方法，我们可以在集成光子电路仿真中准确地捕捉这些 APD 的物理特性。