New efficient (thio)acetalized fullerene monoadducts for organic solar cells: characterization based on solubility, mobility balance, and dark current
New efficient (thio)acetalized fullerene monoadducts for organic solar cells: characterization based on solubility, mobility balance, and dark current
复制标题
DOI：
10.1039/c4ta05965d
复制
发表时间：
2015
影响因子：
--
通讯作者：
Tsubasa Mikie;A. Saeki;Hiroyuki Masuda;Naohiko Ikuma;Ken Kokubo;S. Seki
中科院分区：
文献类型：
--
作者：
Tsubasa Mikie;A. Saeki;Hiroyuki Masuda;Naohiko Ikuma;Ken Kokubo;S. Seki
我们报告了使用带有五至七元环的新型螺缩醛化和（硫代）缩醛化[60]富勒烯单加合物对有机光伏电池的系统研究。其中一种化合物对于 PTB7 的功率转换效率为 5.8%，对于聚 (3-己基噻吩) 的功率转换效率为 4.0%；后者与常用的[6,6]-苯基-C61-丁酸甲酯相当。我们通过检查溶解度、空穴和电子的空间电荷限制电流迁移率平衡、形态和暗电流，研究了控制器件性能的精确因素。单晶 X 射线衍射强调了富勒烯堆积中边缘空间中紧凑且灵活的螺环折叠的关键作用。
We report a systematic study of organic photovoltaic cells using novel spiro-acetalized and (thio)acetalized [60]fullerene monoadducts bearing five- to seven-membered rings. One of these compounds had power-conversion efficiencies of 5.8% with PTB7 and 4.0% with poly(3-hexylthiophene); the latter is comparable to that of the commonly used [6,6]-phenyl-C61-butyric acid methyl ester. We investigated the precise factor that governs the device performance by examining the solubility, space-charge-limited current mobility balance of holes and electrons, morphology, and dark current. Single-crystal X-ray diffraction highlighted the key role of compact and flexible spiro ring folding in the rim space in fullerene packing.