一、引言 近年来,人们提出了一种叫做离子敏感场效应晶体管(Ion-Sensitive Field Eftect Transistor)的表面器件。它是微电子技术和其它具有敏感功能的新材料相互结合而产生的一种新型器件,它集中了微电子技术的一些特点,特别是这种器件可以微型化,可以做为一种新的微型探测器,用于医学、生物学、分析化学、环境保护等领域。从目前的研究来看,H~+-ISFET I. INTRODUCTION In recent years, people have proposed a surface device called Ion-Sensitive Field Eftect Transistor. It is a new device created by the combination of microelectronics and other sensitive new materials. It focuses on some of the features of microelectronic technology. In particular, the device can be miniaturized and can be used as a new miniature Detector, used in medicine, biology, analytical chemistry, environmental protection and other fields. From the current research point of view, H ~ + -ISFET