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You searched for +publisher:"University of North Carolina" +contributor:("Kelly, Mary"). One record found.

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University of North Carolina

1. Kelly, Mary. Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells.

Degree: Chemistry, 2017, University of North Carolina

Organic photovoltaics have risen to prominence in the last twenty-five years, with efficiencies broaching 12 %, but the inherent limitation of a narrow absorption window has restricted the performance of these solar cells. Ternary blends offer an attractive solution to this conundrum: combining the extended complementary absorption of a tandem solar cell with the ease of single-junction fabrication. Parallel-like bulk heterojunctions (PBHJ) not only exhibit improved current, but a tunable voltage, which is a promising development. However, the development of such ternary blends is still largely an empirical process. In this dissertation, we investigate the guidelines for material selection for ternary blend solar cells. We begin by ascertaining the importance of backbone structure for compatibility in PBHJ OPVs. It immediately becomes clear that to obtain a working PBHJ, a common donor moiety is required in the polymer backbone. We build on this by comparing the performance and behavior of a physically fluorinated vs. chemically fluorinated system. In this case, the characteristics of both blends are nearly identical, indicating that compatible, miscible polymers will behave similarly to their random copolymer. Additionally, this study highlighted that the addition of a high mobility polymer into a PBHJ can improve the hole mobility and fill factor. Finally, we used these guidelines to selected high performance polymers for use in PBHJs and tested their behavior. Interestingly, with these polymers, the behavior of the physical blend differed significantly from that of the copolymer, demonstrating the complexity of ternary blends. What is true of one materials system may not hold for another. Advisors/Committee Members: Kelly, Mary, You, Wei, Atkin, Joanna, Cahoon, James, Sheiko, Sergei, Warren, Scott, University of North Carolina at Chapel Hill.

Subjects/Keywords: College of Arts and Sciences; Department of Chemistry

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Kelly, M. (2017). Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells. (Thesis). University of North Carolina. Retrieved from https://cdr.lib.unc.edu/record/uuid:654cfe7a-829c-451f-b9b9-02536ef866f9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Kelly, Mary. “Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells.” 2017. Thesis, University of North Carolina. Accessed December 01, 2020. https://cdr.lib.unc.edu/record/uuid:654cfe7a-829c-451f-b9b9-02536ef866f9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Kelly, Mary. “Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells.” 2017. Web. 01 Dec 2020.

Vancouver:

Kelly M. Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells. [Internet] [Thesis]. University of North Carolina; 2017. [cited 2020 Dec 01]. Available from: https://cdr.lib.unc.edu/record/uuid:654cfe7a-829c-451f-b9b9-02536ef866f9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kelly M. Fundamental Studies of Ternary Blends for Bulk heterojunction Solar Cells. [Thesis]. University of North Carolina; 2017. Available from: https://cdr.lib.unc.edu/record/uuid:654cfe7a-829c-451f-b9b9-02536ef866f9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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