TY - JOUR
T1 - Horizontally oriented molecular thin films for application in organic solar cells
AU - Matsushima, Toshinori
AU - Matsuo, Hitoshi
AU - Yamamoto, Tetsuo
AU - Nakao, Akichika
AU - Murata, Hideyuki
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant nos. 25790040 and 20108012 .
PY - 2014/4
Y1 - 2014/4
N2 - The authors investigate the influence of molecular orientation of p-type molecules of alpha-sexithiophene (α-6T) and n-type molecules of 3,4,9,10-perylene tetracarboxylic bisbenzimidazole (PTCBI) on organic solar cell (OSC) performance. Deposition of α-6T and subsequently PTCBI on an α-6T buffer surface rubbed with a nylon cloth allows their horizontal orientations to be formed in separate layers. Power conversion efficiency and operation stability of a rubbed OSC are markedly improved when compared with an unrubbed OSC. The improved OSC performance is confirmed to be due to increases in light absorption, exciton diffusion length, energy difference between the p-type and n-type layers, and carrier collection by electrodes, which are caused by the rubbing-induced double horizontal orientations.
AB - The authors investigate the influence of molecular orientation of p-type molecules of alpha-sexithiophene (α-6T) and n-type molecules of 3,4,9,10-perylene tetracarboxylic bisbenzimidazole (PTCBI) on organic solar cell (OSC) performance. Deposition of α-6T and subsequently PTCBI on an α-6T buffer surface rubbed with a nylon cloth allows their horizontal orientations to be formed in separate layers. Power conversion efficiency and operation stability of a rubbed OSC are markedly improved when compared with an unrubbed OSC. The improved OSC performance is confirmed to be due to increases in light absorption, exciton diffusion length, energy difference between the p-type and n-type layers, and carrier collection by electrodes, which are caused by the rubbing-induced double horizontal orientations.
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U2 - 10.1016/j.solmat.2014.01.004
DO - 10.1016/j.solmat.2014.01.004
M3 - Article
AN - SCOPUS:84893380913
VL - 123
SP - 81
EP - 91
JO - Solar Cells
JF - Solar Cells
SN - 0927-0248
ER -
