Temperature/time-dependent crystallization of polythiophene: fullerene bulk heterojunction films for polymer solar cells.
Temperature/time-dependent crystallization of polythiophene: fullerene bulk heterojunction films for polymer solar cells.
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DOI：
10.1039/c0nr00379d
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发表时间：
2010-11
期刊：
影响因子：
6.7
通讯作者：
Sungho Nam;Minjung Shin;Hwajeong Kim;Youngkyoo Kim
中科院分区：
文献类型：
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作者：
Sungho Nam;Minjung Shin;Hwajeong Kim;Youngkyoo Kim
我们报道了聚（3-己基噻吩）（P3HT）在 P3HT 和 [6,6]-苯基-C(61)-丁酸甲酯（PC61BM）共混膜中的温度/时间依赖性结晶。通过采用同步辐射掠入射角 X 射线衍射 (GIXD) 技术，在两个不同温度（150°C 和 160°C）下测量 P3HT:PC61BM 共混薄膜的结晶行为作为退火时间的函数。结晶行为与在相同条件下退火的相应太阳能电池相关。结果表明，器件性能的变化趋势与（100）GIXD强度的变化趋势几乎一致，表明共混膜中纳米结构的变化确实影响了器件的性能。然而，在较低温度（140°C）退火中观察到的与纳米形态波动相关的中间区域在较高温度（150°C 和 160°C）退火中被显着抑制。
We report the temperature/time-dependent crystallization of poly(3-hexylthiophene) (P3HT) in blend films of P3HT and [6,6]-phenyl-C(61)-butyric acid methyl ester (PC₆₁BM). The crystallization behaviour of P3HT:PC₆₁BM blend films was measured as a function of annealing time at two different temperatures (150°C and 160°C) by employing a synchrotron-radiation grazing-incidence angle X-ray diffraction (GIXD) technique. The crystallization behaviour was correlated with corresponding solar cells annealed under the same conditions. Results showed that the trend of device performance was almost in accordance with that of the (100) GIXD intensity, indicating that the nanostructure change in blend films does affect the device performance. However, the intermediate zones related to nanomorphology fluctuations, which were observed for lower temperature (140°C) annealing, were significantly suppressed at higher temperature (150°C and 160°C) annealing.