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Synthesis of a Conjugated D-A Polymer with Bi(disilanobithiophene) as a New Donor Component.

ABSTRACT: A new conjugated donor-acceptor (D-A) polymer pDSBT2-BT containing bi(disilano-bisthiophene) and benzothiadiazole as donor and acceptor units, respectively, was prepared. The polymer showed a broad UV-vis absorption band at ?max = 599 nm in chlorobenzene. The absorption band was shifted to ?max = 629 nm when the polymer was measured as a film, indicating enhanced interchain interactions of the polymer. Bulk hetero-junction polymer solar cells (BHJ-PSCs) were fabricated using pDSBT2-BT and PC71BM as host and guest materials, respectively. Optimization of cell fabrication conditions provided a maximal power conversion efficiency of 3.3% and the following cell parameters: Voc = 0.86 V, Jsc = 7.56 mA/cm², and FF = 0.51. Although the efficiency still leaves much to be desired, these data underscore the potential of pDSBT2-BT as a high-voltage polymer solar cell material.

SUBMITTER: Nakashima M

PROVIDER: S-EPMC6273805 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Synthesis of a Conjugated D-A Polymer with Bi(disilanobithiophene) as a New Donor Component.

Nakashima Makoto M Ooyama Yousuke Y Sugiyama Takuya T Naito Hiroyoshi H Ohshita Joji J

Molecules (Basel, Switzerland) 20160617 6

A new conjugated donor-acceptor (D-A) polymer pDSBT2-BT containing bi(disilano-bisthiophene) and benzothiadiazole as donor and acceptor units, respectively, was prepared. The polymer showed a broad UV-vis absorption band at λmax = 599 nm in chlorobenzene. The absorption band was shifted to λmax = 629 nm when the polymer was measured as a film, indicating enhanced interchain interactions of the polymer. Bulk hetero-junction polymer solar cells (BHJ-PSCs) were fabricated using pDSBT2-BT and PC71BM ...[more]

PMID: 27322229

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