Optimizing Device Structure of PTB7-Th:PNDI-T10 Bulk Heterojunction Polymer Solar Cells by Enhancing Optical Absorption

Daniel Dodzi Yao Setsoafia, Kiran Sreedhar Ram, Hooman Mehdizadeh Rad, David Ompong, Naveen Kumar Elumalai and Jai Singh
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Daniel Dodzi Yao Setsoafia: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia
Kiran Sreedhar Ram: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia
Hooman Mehdizadeh Rad: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia
David Ompong: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia
Naveen Kumar Elumalai: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia
Jai Singh: College of Engineering, IT and Environment, Purple 12, Charles Darwin University, Darwin, NT 0909, Australia

Energies, 2022, vol. 15, issue 3, 1-15

Abstract: Using the optical transfer matrix method, we optimized the layered structure of a conventional and an inverted BHJ OSC with the active layer made of blended PTB7-Th:PNDI-T10 by maximizing the optical absorption and, hence, the J S C . The maximum J S C thus obtained from the optimised structure of the inverted OSC was 139 Am −2 and that of the conventional OSC was 135 Am −2 . Simulation of the electric field distribution in both inverted and conventional OSCs showed that the formation of a single CIP was obtained in the active layer of thickness 105 nm in both OSCs. As the light incidents from the ITO side, it was found that excitons were generated more closely to ITO electrode, which favors the efficient charge transport and collection at the opposite electrodes in the inverted OSC, which produces higher J S C .

Keywords: polymer solar cells; optimal structure OSCs; inverted OSC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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