Available online 17 January 2013
Publication year: 2013
Source:Journal of Crystal Growth
We have investigated the growth process of benzodithiophene (BDT)-dimer films deposited on ~1.1-monolayer-thick pentacene layers used as crystallinity control layers (CCLs). It has been found that the BDT-dimer film shows, on their initial stage, two-dimensional growth with the 2nd-layer pentacene islands of the CCLs working as the growth nuclei. Thus, we considerably reduced the density of the 2nd-layer pentacene islands of the CCLs by lowering their growth rate because the density is determined by the migration length of the pentacene molecules on the surfaces. As a result, we obtained BDT-dimer films consists of enlarged grains, and lowered the channel resistance of the pentacene-CCL/BDT-dimer FETs.
► Pentacene crystallinity control layers (CCLs) for BDT-dimer FETs were investigated. ► Lowering the growth rate of pentacene CCLs results in the larger BDT-dimer grains. ► The channel resistance of the BDT-dimer FETs has been reduced.
Publication year: 2013
Source:Journal of Crystal Growth