The Michigan Engineer News Center

Byeongseop Song receives Rackham International Student Fellowship

The Fellowship will help Song to continue his studies in the area of optoelectronics.| Short Read
EnlargeSong in the lab
IMAGE:  Byeongseop Song in front of Prof. Forrest's lab

Byeongseop Song, a second year master’s student in the Electrical Engineering program, received a Rackham International Student Fellowship to continue his studies in the area of optoelectronics.

Byeongseop has been conducting research in the area of organic photovoltaics (OPV) with Prof. Stephen Forrest’s group. OPV employs organic materials to convert light energy to electrical energy; traditional photovoltaics use inorganic material. He is attempting to improve the efficiency of OPV, and eventually would like to research hybrid systems that take advantage of both OPV and inorganic photovoltaics. OPV are cost-effective and flexible, while inorganic photovoltaics are more efficient and scalable.

Already, Byeongseop has co-authored three papers (one published, one accepted for publication, and one in preparation for submittal); he co-authored a paper that was presented at the 2013 Materials Research Society (MRS) Fall Meeting; and his name is on two invention disclosures.

Mr. Song received his bachelor’s degree from Seoul National University in 2012.

The Rackham International Student Fellowship assists outstanding international students, particularly those who may be ineligible for other kinds of support because of citizenship. To be eligible, international graduate students must have successfully completed one year of graduate study as a master’s or precandidate student. Nominees must have a strong academic record, be making good progress toward the degree, and demonstrate outstanding academic and professional promise.

Song in the lab
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The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read