Band-like transport in solution-processed perylene diimide dianion films with high Hall mobility.

Jia, Yanhua; Jiang, Qinglin; Gan, Hanlin; Wang, Bohan; He, Xiandong; Zhou, Jiadong; Ma, Zetong; Zhang, Jiang; Ma, Yuguang

Jia, Yanhua; Jiang, Qinglin; Gan, Hanlin; Wang, Bohan; He, Xiandong; Zhou, Jiadong; Ma, Zetong; Zhang, Jiang; Ma, Yuguang.

Afiliación

Jia Y; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Jiang Q; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Gan H; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Wang B; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
He X; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Zhou J; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Ma Z; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
Zhang J; Department of Physics, South China University of Technology, Guangzhou 510640, China.
Ma Y; Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.

Natl Sci Rev ; 11(5): nwae087, 2024 May.

Article en En | MEDLINE | ID: mdl-38606386

ABSTRACT

ABSTRACT

It is crucial to prepare high-mobility organic polycrystalline film through solution processing. However, the delocalized carrier transport of polycrystalline films in organic semiconductors has rarely been investigated through Hall-effect measurement. This study presents a strategy for building strong intermolecular interactions to fabricate solution-crystallized p-type perylene diimide (PDI) dianion films with a closer intermolecular π-π stacking distance of 3.25 Å. The highly delocalized carriers enable a competitive Hall mobility of 3 cm2 V-1 s-1, comparable to that of the reported high-mobility organic single crystals. The PDI dianion films exhibit a high electrical conductivity of 17 S cm-1 and typical band-like transport, as evidenced by the negative temperature linear coefficient of mobility proportional to T-3/2. This work demonstrates that, as the intermolecular π-π interactions become strong enough, they will display high mobility and conductivity, providing a new approach to developing high-mobility organic semiconductor materials.

Palabras clave

Hall mobility; band-like transport; dianion aggregates; perylene diimide; solution-processed

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