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; Jai Singh

doi:10.3390/en15030711

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, Jai Singh

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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_SC . The maximum J_SC 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_SC .

Original language	English
Article number	711
Pages (from-to)	1-15
Number of pages	15
Journal	Energies
Volume	15
Issue number	3
DOIs	https://doi.org/10.3390/en15030711
Publication status	Published - 1 Feb 2022

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© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

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Copyright 2022 Elsevier B.V., All rights reserved.

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

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 JSC . The maximum JSC 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 JSC .",

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AU - Setsoafia, Daniel Dodzi Yao

AU - Ram, Kiran Sreedhar

AU - Rad, Hooman Mehdizadeh

AU - Ompong, David

AU - Elumalai, Naveen Kumar

AU - Singh, Jai

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AB - 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 JSC . The maximum JSC 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 JSC .

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

Abstract

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