Work

Morphology-Dependent Carrier and Exciton Generations in Regioregular Poly(3-hexylthiophene) Polymer Diodes as Revealed by Bleaching Spectroscopy

Year: 2009

Type: article

Abstract: Bleaching probe spectroscopy performed for regioregular poly(3-hexylthiophene) diodes reveals that coexistent morphological phases determine the conducting and optical properties of conjugated polymer films. Photoinduced absorption measurements demonstrate that exciton migration occurs from lamella aggregates to morphological sites consisting of quasiuncoupled chains and that the latter sites determine steady-state photophysical properties. Spectroscopy synchronized with diode operation reveals that the morphological locations of injected carriers in polymer diodes vary with the applied bias.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.103.187402

Authors: Katsuichi Kanemoto, Motoaki Yasui, Daisuke Kosumi, Akihiko Ogata, Mitsuru Sugisaki, Tsutomu Karasawa, Ichiro Akai, Hideki Hashimoto

Institutions: Osaka City University, Japan Science and Technology Agency, Kumamoto University

Language: English

Topic: Organic Electronics and Photovoltaics

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2011192480

FWCI: 1.547

Cites: 28

Cited by: 22

Related to: 10