Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells

Joint Authors

Xie, Xiao-Hua
Zhao, Xin-Wei
Li, Ming

Source

International Journal of Polymer Science

Issue

Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2018-05-30

Country of Publication

Egypt

No. of Pages

11

Main Subjects

Physics

Abstract EN

The structural, electronic, and optical properties of PBDTTBT are comprehensively studied by density functional theory to rationalize the experimentally observed properties.

Periodic boundary conditions method is employed to simulate the polymer block and calculate effective charge mass from the band structure calculation to describe charge transport properties.

Moreover, both time-dependent density functional theory and a set of multidimensional visualization techniques are used to characterize the exciton dissociation ability in the PCBM: PBDTTBT interface.

These theoretical methods and calculation techniques not only promote deep understanding of the connection between chemical structures and optical and electronic properties of the donor-acceptor system but also can be used to rationally design a novel donor-acceptor system.

Based on the same calculated methods as PBDTTBT, four copolymers PBDTTTP, PBDTTTO, PBDTTTPD, and PBDTTFPD are designed to study their potentials as donors in polymer BHJ.

The results indicate that PBDTTBT’s well conjugation benefits its good stability, and its wide and strong absorption spectra in the range of visible light, appropriate FMO levels, well charge transport, and favorable exciton dissociation lead to its photovoltaic performance.

Furthermore, through comparing the four designed polymers with PBDTTBT, we conclude that the four designed polymers have stronger exciton dissociation ability and larger open-circuit voltage and external quantum efficiencies.

Consequently, the four designed copolymers are promising candidates for polymer BHJ solar cells.

American Psychological Association (APA)

Xie, Xiao-Hua& Zhao, Xin-Wei& Li, Ming. 2018. Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells. International Journal of Polymer Science،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1175042

Modern Language Association (MLA)

Xie, Xiao-Hua…[et al.]. Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells. International Journal of Polymer Science No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1175042

American Medical Association (AMA)

Xie, Xiao-Hua& Zhao, Xin-Wei& Li, Ming. Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells. International Journal of Polymer Science. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1175042

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1175042