The Nature of Singlet Exciton Fission in Carotenoid Aggregates A. J. Musser, M. Mauri, D. Brida, G. Cerullo, R. H. Friend and J. Clark Journal of the American Chemical Society, 137, 5130 (2015)

Triplet Dynamics in Pentacene Crystals: Applications to Fission-Sensitized Photovoltaics A.D. Poletayev, J. Clark, M.W.B. Wilson, A. Rao, Y. Makino, S. Hotta, R.H. Friend Advanced Materials, 26, 919 (2014)

Ultrafast Long-Range Charge Separation in Organic Semiconductor Photovoltaic Diodes S. Gélinas, A. Rao, A. Kumar, S.L. Smith, A.W. Chin, J. Clark, T.S. van der Poll, G.C. Bazan, R.H. Friend Science, 343, 512 (2014)

Temperature-Independent Singlet Exciton Fission in Tetracene M.W.B Wilson, A. Rao, K. Johnson, S. Gélinas, R. di Pietro, J. Clark, R.H. Friend Journal of the American Chemical Society, 135, 16680 (2013)

Activated Singlet Exciton Fission in a Semiconducting Polymer A.J. Musser, M. Al-Hashimi, M. Mauri, D. Brida, M. Heeney, G. Cerullo, R.H. Friend and J. Clark Journal of the American Chemical Society, 135, 12747 (2013)

Control of Intrachain Charge Transfer in Model Systems for Block Copolymer Photovoltaic Materials K. Johnson, Y.S. Huang, S. Heuttner, M. Sommer, M. Brinkmann, R. Mulherin, D. Niedzialek, D. Beljonne, J. Clark, W.T.S. Huck, R.H. Friend Journal of the American Chemical Society, 135, 5074 (2013)

Femtosecond torsional relaxation J. Clark, T. Nelson, S. Tretiak, C. Cirmi and G. Lanzani Nature Physics, 8, 225–231 (2012)

Giant broadband nonlinear optical absorption response in dispersed graphene single sheets G.-K. Lim, Z.-L. Chen, J. Clark, R.G.S. Goh, W.-H. Ng, H.-W. Tan, R.H. Friend, P.K.H. Ho, and L.-L. Chua Nature Photonics, 5, 554–560 (2011)

Ultrafast Dynamics of Exciton Fission in Polycrystalline Pentacene M.W.B. Wilson, A. Rao, J. Clark, R.S.S. Kumar, D. Brida, G. Cerullo, and R.H. Friend Journal of the American Chemical Society, 133, 11830-11833 (2011)

Two-Photon Poly(phenylenevinylene) DFB Laser F. Scotognella, D.P. Puzzo,M. Zavelani-Rossi, J. Clark, M. Sebastian,G.A. Ozin, and G. Lanzani. Chemistry of Materials, 23, 805-809 (2011)

Stimulated emission and ultra-fast optical switching in a ter(9,9-spirobifluorene)-co-methylmethacrylate copolymer A. Charas, A. L. Mendonça, J. Clark, L. Bazzana, A. Nocivelli, G. Lanzani and J. Morgado. Journal of Polymer Science Part B: Polymer Physics, 49, 52-61 (2011)

Organic Photonics for Communications J. Clark and G. Lanzani. Nature Photonics, 4, 438-446 (2010)

Nanoscale Imaging of the Interface Dynamics in Polymer Blends by Femtosecond Pump-Probe Confocal Microscopy D. Polli, G. Grancini, J. Clark, M. Celebrano, T. Virgili, G. Cerullo and G. Lanzani. Advanced Materials, 22, 30483051 (2010)

Ultrafast optical gain switch in organic photonic devices T. Virgili, J. Clark, J. Cabanillas-Gonzalez, L. Bazzana, K.C. Vishnubhatla, R. Osellame, R. Ramponi and G. Lanzani. Journal of Materials Chemistry, 20, 519-523 (2010)

Femtosecond laser fabrication of microfluidic channels for organic photonic devices K. C. Vishnubhatla, J. Clark, G. Lanzani, R. Ramponi, R. Osellame, T. Virgili. Applied Optics, 48, G114-G118 (2009)

Determining exciton bandwidth and film microstructure in polythiophene films using linear absorption spectroscopy J. Clark, J-F. Chang, F. C. Spano, R. H. Friend and C. Silva. Applied Physics Letters, 94, 163306 (2009)

Ultra-fast optofluidic switch based on conjugated polymer in femtosecond laser fabricated microchannels K. C. Vishnubhatla J. Clark, G. Lanzani, R. Ramponi, R. Osellame and T. Virgili. Applied Physics Letters, 94, 041123 (2009)

Determining exciton coherence from the photoluminescence spectral line shape in poly(3-hexylthiophene) thin films F. C. Spano, J. Clark, C. Silva and R. H. Friend. Journal of Chemical Physics, 104, 074904 (2009)

Blue polymer optical fiber amplifiers based on conjugated fluorene oligomers J. Clark, L. Bazzana, D. D. C. Bradley, J. Cabanillas-Gonzalez, G. Lanzani, D. G. Lidzey, J. Morgado, A. Nocivelli, W. C. Tsoi, T. Virgili, and R. Xia. Journal of Nanophotonics, 2 023504 (2008)

Charge recombination in heterostructures of semiconductor discotic and polymeric materials J. Clark, R. Archer, T. Redding, C. Foden, J. Tant, Y. Geerts, R. H. Friend and C. Silva. Journal of Applied Physics, 103, 124510 (2008)

Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene J. Clark, C. Silva, R. H. Friend and F. C. Spano. Physical Review Letters 98, 206406 (2007)

Molecular weight dependence of interchain polaron delocalization and exciton bandwidth in high-mobility conjugated polymers J-F. Chang, J. Clark, N. Zhao, and H. Sirringhaus, D. W. Breiby, J. W. Andreasen, and M. M. Nielsen, M. Giles, M. Heeney, and I. McCulloch. Physical Review B 74, 115318 (2006)