Controlling the alkyl chains is an efficient and simple method for modifying various aspects
of conjugated polymers. In particular, we focused on the positioning effects of the alkyl …

The crystalline and amorphous phases often coexist in the organic active layers of their
electronic devices, which further undergo morphological changes over time. Understanding …

Organic nanofibers have found various applications in optoelectronic devices. In such
devices, exciton diffusion is a major aspect concerning their efficiency. In the case of singlet …

Organic nanofibers have shown potential for application in optoelectronic devices because
of the tunability of their optical properties. These properties are influenced by the electronic …

Molecular orientation of conjugated polymers plays a key role in exciton
generation/separation and charge transport, and thus significantly influence photovoltaic …

We clarify the mechanism that leads to extended exciton diffusion length in organic materials
which exhibit a strong anisotropy of electronic coupling. We analyze the cooperative effects …

The optical performance of multilayered organic nanofibers results from the dynamics of
excited states in the system. Here, we show that the presence of biexcitons is crucial to …

Charge separation is one of the crucial processes in the photoelectric conversion of organic
photovoltaics. It is considered that organic photovoltaics have low performances because of …

A bulk-heterojunction structure is often employed to develop high-performance organic
photocells, in which the donor and acceptor regions are complexly intertwined. In such …

Morphology is one of key factors to improve performance of organic photovoltaics, and
further understanding is required. Conductive atomic force microscopy, C-AFM, is an …