Question
Energy conduction in organic photovoltaics occurs via dissociation of bound states of these two particles at donor-acceptor interfaces. For 10 points each:
[10m] Name these two types of particles that form hydrogen-like bound states called excitons. These two types of particles are respectively introduced by N-type and P-type doping.
ANSWER: electrons AND holes [accept electron holes for holes]
[10h] Excitons with large Bohr radii, typically found in semiconductors, are co-named for this physicist and Mott. A set of orthogonal functions named for this physicist are Fourier transforms of Bloch states, and are analogous to localized orbitals for crystals.
ANSWER: Gregory Wannier [accept Wannier-Mott orbital or Wannier functions]
[10e] Exciton spectral lines are typically thin, and have energy below the namesake “gap” between these regions. Electrons may occupy the “valence” or “conduction” examples of these regions.
ANSWER: bands [or energy bands; accept valence band or conduction band; accept band gap]
<JZ, Physics>
Summary
| 2024 ARCADIA at Duke | 2024-12-06 | Y | 3 | 16.67 | 100% | 67% | 0% |
| 2024 ARCADIA at Florida Tech | 2024-12-06 | Y | 3 | 13.33 | 67% | 67% | 0% |
| 2024 ARCADIA at UC Berkeley | 2024-12-06 | Y | 2 | 20.00 | 100% | 100% | 0% |
| 2024 ARCADIA at Waterloo | 2024-11-09 | Y | 6 | 16.67 | 83% | 83% | 0% |
| 2024 ARCADIA at GT | 2024-12-06 | Y | 4 | 17.50 | 100% | 75% | 0% |
| 2024 ARCADIA at Illinois | 2024-11-09 | Y | 4 | 15.00 | 75% | 75% | 0% |
| 2024 ARCADIA at Warwick | 2024-12-06 | Y | 4 | 12.50 | 75% | 50% | 0% |
| 2024 ARCADIA at Claremont | 2024-11-02 | Y | 3 | 16.67 | 100% | 67% | 0% |
Data
| Purdue A | Chicago B | 10 | 0 | 10 | 20 |
| Illinois Blue | Chicago A | 10 | 0 | 10 | 20 |
| Notre Dame | Illinois Orange | 10 | 0 | 10 | 20 |
| SIUE | Purdue B | 0 | 0 | 0 | 0 |