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In this paper, a kind of four-layer stack capacitor is proposed, which has realized the compatibility with the conventional standard $0.5~\mu \text{m}$ CMOS technology. The effective capacitance per area of the proposed stack capacitor is about three times larger than that of the mono-layer MOS capacitor. The Simulation Program with Integrated Circuit Emphasis (SPICE) model of the presented four-layer stack capacitor has been also established with considering the fringe effect. The results show that the root mean square error of the proposed SPICE model is less than 2%. The model has been applied in the simulation design of the infrared focal plane array readout circuit (IRFPA ROIC) successfully. Based on the improved $0.5~\mu \text{m}$ CMOS process with four-layer stack capacitor, an IRFPA ROIC with $640\times 512$ array has been implemented and the dynamic range is improved from 73db to 78dB.

Vigorously developing new energy is an important measure to deal with the energy crisis and environmental degradation, but the volatility and randomness of its output have brought great challenges to the new energy consumption. In this paper, the maximum new energy consumption is taken as the objective function, and the power flow constraints, multi-energy source capacity constraints and electrical constraints are taken as the constraints. Based on the complex adaptive system theory, the minimum construction step size of new energy sources is taken as the agent for modeling, focusing on the coordination among multiple sources, adjusting the installed node position and capacities of various types of power sources to obtain the optimal layout of power sources for multi-energy power systems. Based on the actual meteorological and operational data of a regional power grid in Northwest China, the original power system is re-planned. The simulation results verify the effectiveness of the proposed planning method.