Improved Crystallinity of Poly(3-hexylthiophene-2,5-diyl):[6,6]-Phenyl-C61 Butyric Acid Methyl Ester Film by Pulsed Electrospray Deposition
Improved Crystallinity of Poly(3-hexylthiophene-2,5-diyl):[6,6]-Phenyl-C61 Butyric Acid Methyl Ester Film by Pulsed Electrospray Deposition
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DOI：
10.1080/15421406.2015.1096443
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发表时间：
2015-11
影响因子：
0.7
通讯作者：
Katsumi Suzuki;A. Toda;Yingjie Liao;T. Fukuda;N. Kamata;Z. Honda
中科院分区：
文献类型：
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作者：
Katsumi Suzuki;A. Toda;Yingjie Liao;T. Fukuda;N. Kamata;Z. Honda
研究了聚（3-己基噻吩-2，5-二基）与[6，6]-苯基-C61-丁酸甲酯共混薄膜的结晶度参数和有序结构。结晶度参数和有序域分别由拉曼光谱和光学吸收光谱估计。结果表明，随着脉冲电压关断时间的缩短，溶剂的蒸发速度变慢，其电导率得到改善。此外，空间电荷限制电流迁移率和光电转换效率也表现出相同的变化趋势。在沉积有源层后不进行热退火处理的情况下，实现了1.11%的最高光电转换效率。
We investigated crystallinity parameters and ordering domains of poly(3-hexylthiophene-2,5-diyl) blended in [6,6]-phenyl-C61-butyric acid methyl ester films, which were fabricated by pulsed electrospray deposition methods. The crystallinity parameter and the ordering domain were estimated from Raman and optical absorption spectra, respectively. As a result, they were improved with decreasing the off time of pulse voltage, corresponding to the slow evaporation speed of solvent. In addition, both the space-charge limited current mobility and the photoconversion efficiency showed same trend. A highest photoconversion efficiency of 1.11 % was achieved without the thermal annealing process after depositing the active layer.