Abstract:Based on introducing the principles of 2D position sensitive detector, the structural design and production process of large area pillow-shaped 2D position sensitive detector were introduced in detail. Furthermore, the parameters such as spectral responsivity, dark current, position resolution and position linearity were analyzed. Test results show that the peak responsivity reaches 0.63A/W at 930nm, the dark current is less than 300nA under 10V reverse bias, and the position resolution and linearity are better than 10μm and 5% respectively.