电荷转移态占据引起的体异质结太阳能电池光电压漂白
Photovoltage Bleaching in Bulk Heterojunction Solar Cells through Occupation of the Charge Transfer State
摘要：
我们观察到一个强大的峰值在电容光电流的MDMO-PPV / PCBM体异质结太阳能电池的激发低于吸收阈值能量。在峰值能量下的照明阻止在其他波长下的电荷捕获，并导致光电压急剧下降。这些结果表明，新的峰是由于电荷转移状态，这提供了一个路径的电荷分离和光电流产生的太阳能电池。
英文摘要：
We observe a strong peak in the capacitive photocurrent of a MDMO-PPV / PCBM bulk heterojunction solar cell for excitation below the absorbance threshold energy. Illumination at the peak energy blocks charge capture at other wavelengths, and causes the photovoltage to drop dramatically. These results suggest that the new peak is due to a charge transfer state, which provides a pathway for charge separation and photocurrent generation in the solar cell.
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