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10.1038/ncomms11010 http://scihub22266oqcxt.onion/10.1038/ncomms11010 C4800436!4800436!26984281     free     free     free Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Nat+Commun 2016 ; 7 (ä): ä Nephropedia Template TP {{tp|p=26984281|t=2016. Exciton?exciton annihilation and biexciton stimulated emission in graphene nanoribbons |pdf=|usr=}}{{26984281}} gab.com Text Exciton exciton annihilation and biexciton stimulated emission in graphene nanoribbons JO: Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26984281 #FOAvip Graphene nanoribbons display extraordinary optical properties due to one-dimensional quantum-confinement, such as width-dependent bandgap and strong electron?hole interactions, responsible for the formation of excitons with extremely high binding energies. Here we use femtosecond transient absorption spectroscopy to explore the ultrafast optical properties of ultranarrow, structurally well-defined graphene nanoribbons as a function of the excitation fluence, and the impact of enhanced Coulomb interaction on their excited states dynamics. We show that in the high-excitation regime biexcitons are formed by nonlinear exciton?exciton annihilation, and that they radiatively recombine via stimulated emission. We obtain a biexciton binding energy of ?250?meV, in very good agreement with theoretical results from quantum Monte Carlo simulations. These observations pave the way for the application of graphene nanoribbons in photonics and optoelectronics. Twit Text FOAVip Exciton exciton annihilation and biexciton stimulated emission in graphene nanoribbons ????Nat Commun http://www.kidney.de/pget.php?&tw=1&pmid=26984281 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26984281 #FOAvip English Wikipedia <ref>{{Cite pmid|26984281}}</ref> Exciton?exciton annihilation and biexciton stimulated emission in graphene nanoribbons #MMPMID26984281 Soavi G; Dal Conte S; Manzoni C; Viola D; Narita A; Hu Y; Feng X; Hohenester U; Molinari E; Prezzi D; Müllen K; Cerullo G Nat Commun 2016[]; 7 (ä): ä PMID26984281show ga Graphene nanoribbons display extraordinary optical properties due to one-dimensional quantum-confinement, such as width-dependent bandgap and strong electron?hole interactions, responsible for the formation of excitons with extremely high binding energies. Here we use femtosecond transient absorption spectroscopy to explore the ultrafast optical properties of ultranarrow, structurally well-defined graphene nanoribbons as a function of the excitation fluence, and the impact of enhanced Coulomb interaction on their excited states dynamics. We show that in the high-excitation regime biexcitons are formed by nonlinear exciton?exciton annihilation, and that they radiatively recombine via stimulated emission. We obtain a biexciton binding energy of ?250?meV, in very good agreement with theoretical results from quantum Monte Carlo simulations. These observations pave the way for the application of graphene nanoribbons in photonics and optoelectronics. äExciton?exciton annihilation and biexciton stimulated emission in grap(epmc).pdf DeepDyve Pubget Overpricing