Research on mechanism for high light absorption of micro-structured silicon

The mechanism of the high light absorption of surface-microstructure silicon is discussed using optical simulation based on Monte Carlo method in this article. Calculation results indicate that the micro-structured surface and high refractive index of material are the two key factors that effectively reduce the reflection, especially transmittance, of the material instead of surface wave and sulfur. In addition, this shows clearly a development in direction for manufacturing new type detectors and increasing the efficiency of traditional detector effectively in the future.