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CEMS Faculty
B.Sc.(Hons.), Physics, University of Manitoba, Canada, 2000
M.A., Electrical Engineering, Princeton University, 2002
Ph.D., Electrical Engineering, Princeton University, 2006 Research Areas
Electronic, Photonic and Magnetic Materials
We are concerned with describing the fundamental optical and electronic properties of organic semiconductor systems. We ultimately seek to exploit the unique properties of this materials class to create novel electronic and optoelectronic devices. This interdisciplinary work involves elements of physics, chemistry, materials science and electrical engineering. Our current focus is on the improvement of organic solar cells and white organic light emitting devices, and on the study of exciton-microcavity phenomena in the context of electrically excited organic lasers.
Selected Publications
| Enhanced exciton diffusion in an organic photovoltaic cell by energy transfer using a phosphorescent sensitizer, W.A. Luhman and R.J. Holmes, Appl. Phys. Lett. 94, 153304 (2009). |
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| Plasmonic nanocavity arrays for enhanced efficiency in organic photovoltaic cells, N.C. Lindquist, W.A. Luhman, S.-H. Oh and R.J. Holmes, Appl. Phys. Lett. 93, 123308 (2008). |
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| Strong exciton-photon coupling in organic materials, (review) R.J. Holmes, S.R. Forrest, Org. Electron. 8, 77 (2007). DOI:10.1016/j.orgel.2006.05.005. |
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| White stacked electrophosphorescent organic light emitting devices, H. Kanno, R.J. Holmes, Y. Sun, S. Kena-Cohen, S.R. Forrest, Adv. Mater. 18, 339 (2006). |
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| Strong coupling and hybridization of Frenkel and Wannier-Mott excitons in an organic-inorganic optical microcavity, R.J. Holmes, S. Kena-Cohen, V.M. Menon, S.R. Forrest, Phys. Rev. B 73, 235211/1 (2006). DOI: 10.1103/PhysRevB.74.235211. |
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| Saturated, deep-blue organic electrophosphorescence using a fluorine-free emitter, R.J. Holmes, S.R. Forrest, T. Sajoto, A. Tamayo, P.I. Djurovich, M.E. Thompson, J. Brooks, Y.-J. Tung, B.W. D’Andrade, M.S. Weaver, R.C. Kwong, J.J. Brown, Appl. Phys. Lett. 87, 243507 (2005). |
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| Organic double-heterostructure photovoltaic cells employing thick tris(acetylacetonato) ruthenium(III) exciton blocking layers, B.P.Rand, J. Li, J. Xue, R.J. Holmes, M.E. Thompson, S.R. Forrest, Adv. Mater. 17, 2714 (2005). |
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| Exciton-photon coupling in organic materials with large intersystem crossing rates and strong excited-state molecular relaxation, R.J. Holmes, S.R. Forrest, Phys. Rev. B 71, 235203 (2005). |
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| Efficient organic electrophosphorescent white-light-emitting device with a triple doped emissive layer, B.W. D’Andrade, R.J. Holmes, S.R. Forrest, Adv. Mater. 16, 624 (2004). |
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| Strong exciton-photon coupling and exciton hybridization in a thermally evaporated polycrystalline film of an organic small molecule, R.J. Holmes, S.R. Forrest, Phys. Rev. Lett. 93, 186404 (2004). |
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| Blue organic electrophosphorescence using exothermic host-guest energy transfer, R.J. Holmes, Y.-J. Tung, R.C. Kwong, J.J. Brown, S. Garon, M.E. Thompson, S.R. Forrest, Appl. Phys. Lett. 82, 2422 (2003). |
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| Efficient, deep blue organic electrophosphorescence by guest charge trapping, R.J. Holmes, B.W. D’Andrade, S.R. Forrest, X. Ren, J. Li, M.E. Thompson, Appl. Phys. Lett. 83, 3818 (2003). |
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| Prospects for electrically pumped organic lasers, M.A. Baldo, R.J. Holmes, S.R. Forrest, Phys. Rev. B 66, 035321 (2002). |
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Current Research Staff
Salil Bapat, Kai-Yuan Cheng, Grant Lodden, Wade Luhman, Richa Pandey
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