ISFET chemical sensors offer innovative solutions for the detection of chemical species by optimizing the ionosensitive membrane or layer between the aqueous medium and the insulation. As a result, the information provided by the sensor is no longer reliable. This is a major problem, as operators are often required to take measurements in an environment with higher or lower temperatures. The study of the effect of temperature on the detection parameters of the sensor, which are the surface potential, linearity and sensitivity, seems essential. The mathematical model presented in this article describes the physicochemical and thermal behavior of the sensor. First, it allows a series of simulations to be carried out on the variation in sensitivity, potential, and linearity with respect to the variation in pH. The second part of this work concerns the influence of temperature on the behavior of the sensor. Hence the determination of the temperature coefficient of the sensitivity, which is an indication of the performance of the sensor. It is also noted that the nature of the membranes of the sensors (Si₃N₄, Al₂O₃, SnO₂) influences the temperature coefficient.

ISFET化学传感器通过优化水性介质与绝缘体之间的离子敏感膜或层，为化学物质的检测提供了创新的解决方案。结果，传感器提供的信息不再可靠。这是一个主要问题，因为经常需要操作员在温度更高或更低的环境中进行测量。研究温度对传感器检测参数的影响，如表面电势，线性和灵敏度，似乎至关重要。本文介绍的数学模型描述了传感器的物理化学和热行为。首先，它允许针对pH值的变化对灵敏度，电势和线性的变化进行一系列模拟。这项工作的第二部分涉及温度对传感器性能的影响。因此，确定灵敏度的温度系数，这是传感器性能的指标。还应注意的是传感器膜的性质（Si₃ N ₄，Al ₂ O ₃，SnO ₂）影响温度系数。