Abstract

The organic solar cell is promising as a permanent power source for indoor IoT devices. Dye-sensitized solar cells (DSSC) have been commercialized for this purpose. On the other hand, LED-based solid-state lighting is commonly chosen as the modern indoor lighting source, and most of them have a dimming function by pulse width modulation. In this article, the performance evaluation method of DSSC under modulated illumination is studied. When the modulation frequency competes with the power-line frequency set to the measurement apparatus for the rejection of the error from the power-line, the mismatch between them causes serious fluctuation in current-voltage curves. The averaging induces another problem, noticeable hysteresis. Removing the mismatch between the two frequencies is found as the proper way to eliminate the fluctuation.

摘要

有机太阳能电池有望成为室内物联网设备的永久电源。为此目的，染料敏化太阳能电池（DSSC）已经商业化。另一方面，现代室内照明光源普遍选用基于LED的固态照明，且大多具有脉宽调制调光功能。本文研究了调制照明下DSSC的性能评估方法。当调制频率与为排除来自电力线的误差而设置到测量装置的电力线频率竞争时，它们之间的不匹配导致电流-电压曲线的严重波动。平均会引发另一个问题，即明显的滞后。发现消除两个频率之间的不匹配是消除波动的正确方法。