Search Results - "McGehee, M D"

Using Resonance Energy Transfer to Improve Exciton Harvesting in Organic-Inorganic Hybrid Photovoltaic Cells by Liu, Y., Summers, M. A., Edder, C., Fréchet, J. M. J., McGehee, M. D.

“…The effective exciton diffusion length of poly(3‐hexylthiophene) (P3HT) can be improved with resonance‐energy transfer from P3HT to…”
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Enhanced Hole Mobility in Regioregular Polythiophene Infiltrated in Straight Nanopores by Coakley, K. M., Srinivasan, B. S., Ziebarth, J. M., Goh, C., Liu, Y., McGehee, M. D.

“…We demonstrate that the hole mobility in regioregular poly(3‐hexylthiophene) can be enhanced by a factor of 20 by infiltrating it into straight nanopores of…”
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Semiconducting (Conjugated) Polymers as Materials for Solid-State Lasers by McGehee, M. D., Heeger, A. J.

“…Light‐emissive polymers are outstanding laser materials because they are intrinsically “4‐level” systems, they have luminescence efficiencies higher than 60 %…”
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Extracting Light from Polymer Light-Emitting Diodes Using Stamped Bragg Gratings by Ziebarth, J. M., Saafir, A. K., Fan, S., McGehee, M. D.

“…In this paper, we describe a method for increasing the external efficiency of polymer light‐emitting diodes (LEDs) by coupling out waveguided light with Bragg…”
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Characteristics, distribution and persistence of thin layers over a 48 hour period by McManus, M. A., Alldredge, A. L., Barnard, A. H., Boss, E., Case, J. F., Cowles, T. J., Donaghay, P. L., Eisner, L. B., Gifford, D. J., Greenlaw, C. F., Herren, C. M., Holliday, D. V., Johnson, D., MacIntyre, S., McGehee, D. M., Osborn, T. R., Perry, M. J., Pieper, R. E., Rines, J. E. B., Smith, D. C., Sullivan, J. M., Talbot, M. K., Twardowski, M. S., Weidemann, A., Zaneveld, J. R.

“…The biological and physical processes contributing to planktonic thin layer dynamics were examined in a multidisciplinary study conducted in East Sound,…”
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Semiconducting polymer distributed feedback lasers by McGehee, M. D., Dı́az-Garcı́a, M. A., Hide, F., Gupta, R., Miller, E. K., Moses, D., Heeger, A. J.

“…We have fabricated photopumped distributed feedback lasers by spin-casting thin films of the semiconducting polymer poly(2-butyl,…”
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Dye-Doped Mesostructured Silica as a Distributed Feedback Laser Fabricated by Soft Lithography by Scott, B. J., Wirnsberger, G., McGehee, M. D., Chmelka, B. F., Stucky, G. D.

“…Distributed feedback (DFB) laserswere made on silicon substrates by using elastomeric stamps to pattern dye‐doped mesostructured silica into ridge waveguides…”
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Low-threshold amplified spontaneous emission in blends of conjugated polymers by Gupta, R., Stevenson, M., Dogariu, A., McGehee, M. D., Park, J. Y., Srdanov, V., Heeger, A. J., Wang, H.

“…Low thresholds (∼500 W/cm2) for amplified spontaneous emission (ASE) are reported in films of soluble poly(paraphenylene vinylene)-based conjugated polymer…”
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Infiltrating Semiconducting Polymers into Self-Assembled Mesoporous Titania Films for Photovoltaic Applications by Coakley, K.M., Liu, Y., McGehee, M.D., Frindell, K.L., Stucky, G.D.

“…Interpenetrating networks of organic and inorganic semiconductors are attractive for photovoltaic cells because electron transfer between the two…”
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Long-Range Resonant Energy Transfer for Enhanced Exciton Harvesting for Organic Solar Cells by Scully, S. R., Armstrong, P. B., Edder, C., Fréchet, J. M. J., McGehee, M. D.

“…We present theory and experiment demonstrating a scheme to harvest singlet excitons over 25 nm away from a donor‐acceptor interface using resonant energy…”
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Narrow Bandwidth Luminescence from Blends with Energy Transfer from Semiconducting Conjugated Polymers to Europium Complexes by McGehee, M. D., Bergstedt, T., Zhang, C., Saab, A. P., O'Regan, M. B., Bazan, G. C., Srdanov, V. I., Heeger, A. J.

“…Efficient, pure red‐emitting polymer light‐emitting diodes have been prepared by doping blue‐emitting conjugated polymers with europium β‐diketonate complexes…”
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Mirrorless Lasing from Mesostructured Waveguides Patterned by Soft Lithography by Yang, Peidong, Wirnsberger, Gernot, Huang, Howard C., Cordero, Steven R., McGehee, Michael D., Scott, Brian, Deng, Tao, Whitesides, George M., Chmelka, Bradley F., Buratto, Steven K., Stucky, Galen D.

“…Mesostructured silica waveguide arrays were fabricated with a combination of acidic sol-gel block copolymer templating chemistry and soft lithography…”
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Förster transfer based amplified spontaneous emission in conjugated polymer blends by Gupta, R., Stevenson, M., McGehee, M.D., Dogariu, A., Srdanov, V., Park, J.Y., Heeger, A.J.

“…Low thresholds for Amplified Spontaneous Emission (ASE) have been achieved in blends of PPV based conjugated polymers. These blends use Förster energy transfer…”
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Index of refraction and waveguiding in thin films of a conjugated polymer which exhibits stimulated emission by Miller, E.K., McGehee, M.D., Diaz-Garcia, M., Srikant, V., Heeger, A.J.

“…We report variable angle spectroscopic ellipsometry (VASE) measurements on thin films of a soluble derivative of poly-paraphenylenevinylene (PPV) in the…”
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Characterization of semiconducting polymer laser materials and the prospects for diode lasers by McGehee, M.D., Gupta, R., Miller, E.K., Heeger, A.J.

“…By measuring the gain and loss in thin film planar waveguides using a standard technique developed for inorganic laser materials, we show that the narrow-line…”
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Reduced Operating Voltages in Polymer Light-Emitting Diodes Doped with Rare-Earth Complexes by Robinson, M.R., Ostrowski, J.C., Bazan, G.C., McGehee, M.D.

“…Light‐emitting diodes (LEDs) were fabricated using two europium complexes, differing only by the addition of tert‐butyl groups around the β‐diketonate ligands…”
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Microplanar polymer light-emitting diodes by McGehee, M.D., Vacar, D., Lemmer, U., Moses, D., Heeger, A.J.

“…A method is presented for fabricating microplanar polymer light-emitting diodes (LEDs) with submicron interelectrode spacing in a surface cell configuration. A…”
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Hybrid Silicon Nanocone–Polymer Solar Cells by Jeong, Sangmoo, Garnett, Erik C, Wang, Shuang, Yu, Zongfu, Fan, Shanhui, Brongersma, Mark L, McGehee, Michael D, Cui, Yi

“…Recently, hybrid Si/organic solar cells have been studied for low-cost Si photovoltaic devices because the Schottky junction between the Si and organic…”
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Linear Side Chains in Benzo[1,2‑b:4,5‑b′]dithiophene–Thieno[3,4‑c]pyrrole-4,6-dione Polymers Direct Self-Assembly and Solar Cell Performance by Cabanetos, Clément, El Labban, Abdulrahman, Bartelt, Jonathan A, Douglas, Jessica D, Mateker, William R, Fréchet, Jean M. J, McGehee, Michael D, Beaujuge, Pierre M

“…While varying the size and branching of solubilizing side chains in π-conjugated polymers impacts their self-assembling properties in thin-film devices, these…”
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The Role of Electron Affinity in Determining Whether Fullerenes Catalyze or Inhibit Photooxidation of Polymers for Solar Cells by Hoke, Eric T., Sachs-Quintana, I. T., Lloyd, Matthew T., Kauvar, Isaac, Mateker, William R., Nardes, Alexandre M., Peters, Craig H., Kopidakis, Nikos, McGehee, Michael D.

“…Understanding the stability and degradation mechanisms of organic solar materials is critically important to achieving long device lifetimes. Here, an…”
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