Performance improvement of P3HT/TiO2 coaxial heterojunction polymer solar cells by introducing a CdS interface modifier
Performance improvement of P3HT/TiO2 coaxial heterojunction polymer solar cells by introducing a CdS interface modifier
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通过引入CdS界面改性剂提高P3HT/TiO2同轴异质结聚合物太阳能电池的性能
DOI：
10.1016/j.jssc.2012.06.041
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发表时间：
2012-12
影响因子：
3.3
通讯作者：
Feng Zhou
中科院分区：
文献类型：
--
作者：
Yan Li;Cheng-Wei Wang;Yun Zhao;Jian Wang;Feng Zhou
Coaxial heterojunction polymer solar cells consisting of vertical aligned crystalline TiO2nanotube arrays transferred onto FTO-coated glass and ordered interpenetrating poly(3-hexylthiophene-2,5-diyl) (P3HT) have been fabricated through interface sensitization of CdS quantum dots on TiO2nanotube walls. The performances of structurally identical polymer solar cells with and without CdS quantum dots sensitization were investigated and compared. The sensitized P3HT/CdS-TiO2cell demonstrated an open-circuit photovoltage of 0.72V and a short-circuit current of 8.29mA/cm2while the P3HT/TiO2cell was 0.41V and 5.64mA/cm2. The efficiency of this sensitized cell represents a more than four-fold improvement compared to the non-sensitized cell. By probing the charge transport characteristics at interfaces and the mechanism of photoelectric conversion, it is found the moderately interfacial CdS QDs plays the role of assisting charge separation and suppression of back recombination at interfaces, which accounts for the observed enhanced Jscand Vocin photovoltaic performance.
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