Kim Youngkyoo, Nelson Jenny, Zhang Tong, Cook Steffan, Durrant James R, Kim Hwajeong, Park Jiho, Shin Minjung, Nam Sungho, Heeney Martin, McCulloch Iain, Ha Chang-Sik, Bradley Donal D C
Department of Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW, United Kingdom.
ACS Nano. 2009 Sep 22;3(9):2557-62. doi: 10.1021/nn900798m.
We found that 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C(61) (PCBM) molecules make a distorted asymmetric body-centered cubic crystal nanostructure in the bulk heterojunction films of reigoregular poly(3-hexylthiophene) and PCBM. The wider angle of distortion in the PCBM nanocrystals was approximately 96 degrees , which can be assigned to the influence of the attached side group to the fullerene ball of PCBM to bestow solubility. Atom concentration analysis showed that after thermal annealing the PCBM nanocrystals do preferentially distribute above the layer of P3HT nanocrystals inside devices.
我们发现，1-(3-甲氧基羰基)丙基-1-苯基-(6,6)C(61)(PCBM)分子在规整聚(3-己基噻吩)和PCBM的本体异质结薄膜中形成了扭曲的不对称体心立方晶体纳米结构。PCBM纳米晶体中较宽的扭曲角约为96度，这可归因于连接在PCBM富勒烯球上的侧基对赋予溶解性的影响。原子浓度分析表明，热退火后，PCBM纳米晶体确实优先分布在器件内部的P3HT纳米晶体层之上。
