High mobility polymer based on a π-extended benzodithiophene and its application for fast switching transistor and high gain photoconductor

Autor:	Hae Jung Son, Dae Sung Chung, Bongsoo Kim, Sungmin Park, Byung Tack Lim
Rok vydání:	2014
Předmět:	chemistry.chemical_classification Electron mobility Multidisciplinary Materials science business.industry Photoconductivity Transistor Polymer Article Active layer law.invention Hysteresis chemistry law Intramolecular force Copolymer Optoelectronics business Telecommunications
Zdroj:	Scientific Reports SCIENTIFIC REPORTS(4)
ISSN:	2045-2322
Popis:	Here we present synthesis and electronic properties of a new alternating copolymer composed of dithieno[2,3-d;2',3'-d'] benzo[1,2-b; 4,5-b'] dithiophene (DTBDT) and diketopyrrolopyrrole units, poly dithienobenzodithiophene-co-diketopyrrolopyrrolebithiophene (PDPDBD). The resulting polymer showed hysteresis free, fast switching and highly reliable organic thin-film transistor properties comparable to a-Si. Hole mobility of the polymer is about 2.7 cm(2)V(-1)s(-1), which is remarkably improved compared with its benzodithiophene (BDT)-analougue that contains a smaller aromatic ring of BDT in the place of DTBDT. This is mainly due to much increased intramolecular charge transport originated from PDPDBD's rigid molecular backbone. Furthermore, photoconductor devices fabricated by using PDPDBD as an active layer showed a high performance with the highest photoconductive gain of similar to 10(5). Taken together, the successful PDPDBD's transistor and photoconductor performances with high device stability demonstrated practical applicability of PDPDBD in low-cost and flexible optoelectronic devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b065a20d9e5b074daff7593a02b0f9c https://doi.org/10.1038/srep05482 Zobrazit plný text záznamu