光生电势的一般方程及横向光生电势

UNIVERSAL EQUATION OF PHOTOVOLTAGE AND TRANSVERSE PHOTOVOLTAGE EFFECT 

在一个包括ｐ＋ｎｎ＋ 结构的光生电势物理模型基础上导出了光生电势的一般方程．在三种光生电势发生的特定条件下，它可简化出结场光生电势，丹倍电势和横向光生电势的函数关系式．该方程统一了各种光生电势的行为机理．依据一般方程理论导出的横向光生电势与光点位置的函数关系研制了光电位置传感器，该器件的光电位置特性优越。

We have derived a universal equation of photovoltage using a physics model of photovoltage effects,which involves a p\++\|n\|n\++ structure.Under specified condition,the equation is simplified to expressions of junction field photovoltage,Dember photovoltage and transverse photovoltage.\;According to the function relation between the transverse photovoltage and the position of light point derived from the universal equation of photovoltage we fabricated the position sensitive detector (PSD) with excellent characteristics of position sensitivity on photocurrents.The theory is thus proven by the successful fabrication of the PSD.