The vibrational anomalies of pentacene molecules have been investigated in conjunction with the high-energy excitonic features. Self-trapped excitons distinguished from others.

TIPS-pentacene is a small-molecule organic semiconductor that widely used in optoelectronic devices. It has been studied intensely owing to its ability undergo singlet fission. In this study, we aim develop further understanding of the coupling between electronic and nuclear degrees freedom (TIPS-Pn). We measured analyzed 2D spectra TIPS-Pn solutions. Using center line slope (CLS) analysis, cha...

A multimode Brownian oscillator model is employed to investigate absorption spectra of pentacene and its derivatives. Using parameters obtained, fission dynamics then studied via 2D spectra.

Organic thin films have attracted considerable interest due to their applicability in organic electronics. The classical scenario for thin film nucleation is the diffusion-limited aggregation (DLA). Recently, it has been shown that organic thin film growth is better described by attachment-limited aggregation (ALA). However, in both cases, an unusual relationship between the island density and ...

Density-functional tight binding (DFTB) has become a popular form of approximate density-functional theory (DFT) based upon minimal valence basis set and neglect all but two center integrals. We report the results our tests recent long-range correction (lc) for time-dependent (TD) lc-DFTB by carrying out TD-lc-DFTB fewest switches surface hopping (FSSH) calculations energy charge transfer times...

We report on a micro-dispensing system for 6,13-Bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) to enable homogenous crystallization and uniform film morphology of the dispensed droplets using a two-solvent mixture along with the use of an insulating binder. This solution composition results in a controlled evaporation of the droplet in ambient air such that the Marangoni flow countera...

Organic field-effect transistors (OFETs) have much attention for flexible, low cost, and ease of processing. The step-edge vertical-channel OFET (SVC-OFET) is one of vertical OFETs that can easily achieve a submicron channel using the step-edge structure [1]. On the other hand, the electrospray deposition (ESD) method is simple solution process used solution spray formed by electric field betwe...

Thin films of organic semiconductor prepared on substrates generally contain crystals that have one common crystal plane parallel to the substrate but random in-plane orientations. In diffraction measurements of these structures, it is often required to anchor the X-ray beam on a fixed spot on the sample, such as an optically visible crystallite or island. Here, a hexapod is used in place of a ...