Previous studies on lateral photovoltaic effect (LPE) mostly focused on the silicon-based inorganic semiconductor devices. Herein, we investigated the LPE in an bulk heterojunction organic photovoltaic (OPV) cell with ITO/PEDOT:PSS/MEH-PPV:PCBM/Al structure. The LPE exhibits a linear dependence on the laser spot position, with position sensitivity of 2.97mV/mm (ITO) and 0.53mV/mm (Al) at 300K. The transverse I-V curves in the dark and under AM1.5 illumination show the typical rectifying characteristic and the photovoltaic properties of OPV cells. With the increase of temperature, the lateral photovoltage increases accordingly. The mechanism of LPE in OPV devices was also discussed. It can be a kind of promising position-sensitive detectors for organic electronic applications.

先前关于横向光伏效应（LPE）的研究主要集中在基于硅的无机半导体器件上。本文中，我们研究了具有ITO / PEDOT：PSS / MEH-PPV：PCBM / Al结构的体异质结有机光伏（OPV）电池中的LPE。LPE对激光光斑位置表现出线性依赖性，在300K时的位置灵敏度为2.97mV / mm（ITO）和0.53mV / mm（Al）。在黑暗中和AM1.5光照下的横向IV曲线显示了OPV电池的典型整流特性和光伏特性。随着温度的升高，横向光电压也相应增加。还讨论了OPV设备中LPE的机理。对于有机电子应用来说，它可能是一种很有前途的位置敏感检测器。