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Outreach Activities

Rational Design of Semiconducting Polymers with Tunable Opto-Electronic Properties Mihaela Stefan (Iovu), University of Texas at Dallas, DMR 0956116.

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Outreach Activities

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  1. Rational Design of Semiconducting Polymers with Tunable Opto-Electronic Properties Mihaela Stefan (Iovu), University of Texas at Dallas, DMR 0956116 As a continuation of my NSF Career grant, in year 3 we synthesized semiconducting polymers containing benzodithiophene (BDT), thienodipyrrole (TDP), and benzodifuran (BDF). The BDT and BDF semiconducting polymers were tested in bulk heterojunction solar cells. The BDT polymers were found to be more soluble as compared to the BDF polymers. However, the HOMO and LUMO energy levels of the BDT and BDF semiconducting polymers were found to be comparable. Bulk heterojunction solar cells were fabricated with PCBM as the acceptor. A conventional solar cell device structure of ITO/PEDOT:PSS/polymer:PCBM/Ca/Al was employed for all the measurements. A maximum power conversion efficiency (PCE) of 1.67 % was measured for the BDT polymers while a maximum PCE measured for BDF polymers was 1.2 %. Current efforts on this project target the replacement of the phenylethynyl with thiophene and bithiophene substituents, which is expected to generate polymers with improved photovoltaic performance.

  2. Rational Design of Semiconducting Polymers with Tunable Opto-Electronic Properties Mihaela Stefan (Iovu), University of Texas at Dallas, DMR 0956116 Outreach Activities During the summer 2012, one high school student (Daniel Fan, Dulles High School, Sugarland) performed research in my lab as part of the Welch Program. Freshman undergraduate student Ferdinand Taenzler was supported on a NSF-REU supplement to perform a 10 week research project in my lab during the summer of 2012. J. D. Feist is a senior high school student from the Jesuit College Preparatory School of Dallas who worked during the summer of 2012 in my lab. Education In the spring of 2012 I taught an Organic Electronics course for graduate students. I prepared this course as part of the proposed educational efforts of my NSF Career grant. In 2012 I received the Inclusive Teaching Diversity Award. This award is presented to one faculty member each year in recognition of their commitment to the goal of diversity and inclusion at UT Dallas.

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