Temperature Insensitive Avalanche Photodetectors

Abstract

We design and simulate a Si-Ge avalanche photodetector secured by a deep trench for effective shielding from thermal crosstalk. Further, the effective photocurrent, dark current, and bandwidth parameters for such detectors are thoroughly analyzed.

A two-stage insulation method for suppressing thermal crosstalk in microarray sensitive units

“…[9][10][11] However, when each unit is in the independent heating operating state they will generate a thermal field around it, due to chip materials such as Si or SiO 2 having a certain degree of thermal conductivity. 12,13) The thermal field occurs with a superposition coupling thermal crosstalk phenomenon, resulting in a operating temperature field deviation or temperature distribution changes, causing the sensor in the monitoring environment to produce errors, directly affecting the sensor's operating sensitivity and accuracy. [14][15][16][17] Researchers have proposed various methods to mitigate the adverse effects of thermal crosstalk on sensor performance, including altering substrate materials and designing isolation holes.…”