Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Neil C. Greenham"'
Autor:
Neil C. Greenham, John E. Anthony, Alexei D. Chepelianskii, Hélène Bouchiat, Karl J. Thorley, Sam L. Bayliss
Publikováno v:
Physical Review B. 92
We measure the dielectric confinement length scales of triplet excitons in organic semiconductors by jointly measuring their microwave-domain electric and magnetic susceptibilities. We apply this technique to characterize triplet excitons in two sing
Autor:
Neil C. Greenham, David S. Ginger
Publikováno v:
Physical Review B. 59:10622-10629
We study photoinduced electron transfer from derivatives of poly(p-phenylenevinylene) (PPV) and nanocrystals of cadmium selenide via photoluminescence (PL) quenching and photoinduced absorption (PIA) spectroscopy. Using size-dependent quantum confine
Publikováno v:
Physical Review B. 54:17628-17637
We study the processes of charge separation and transport in composite materials formed by mixing cadmium selenide or cadmium sulfide nanocrystals with the conjugated polymer poly(2-methoxy,5-(2\ensuremath{'}-ethyl)-hexyloxy-$p$-phenylenevinylene) (M
Publikováno v:
Physical Review B. 53:13528-13533
Publikováno v:
Physical Review B. 81
We have used space-charge limited current measurements to study the mobility of holes and electrons in two fluorene-based copolymers for temperatures from 100 to 300 K. Interpreting the results using the standard analytical model produced an Arrheniu
Autor:
Chris Groves, Neil C. Greenham
Publikováno v:
Physical Review B. 78
We investigate the rate constant for Langevin-type bimolecular recombination using a Monte Carlo model. It is found that filamentary transport, mobility anisotropy, restriction of transport in one dimension, and confinement of electrons and holes to
Publikováno v:
Physical Review B. 76
The triplet excited-state $({T}_{1}\ensuremath{\rightarrow}{T}_{n})$ absorption cross section of poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) was calculated from quasi-steady-state photoinduced absorption measurements of films of the polymer
Publikováno v:
Physical Review B. 71
Photoinduced absorption spectroscopy is used to study the intersystem crossing in a blend consisting of the fluorene-based conjugated polymers poly($9,{9}^{\ensuremath{'}}$-dioctylfluorene-$\mathit{co}$-benzothiadiazole) (F8BT) and poly($9,{9}^{\ensu
Publikováno v:
Physical Review B. 67
We have developed a numerical model to predict the current-voltage curves of bilayer conjugated polymer photovoltaic devices. The model accounts for charge photogeneration, injection, drift, diffusion, and recombination, and includes the effect of sp
Autor:
Hiroki Kondo, Shuji Abe, Yukihiro Shimoi, Neil C. Greenham, M. Kato, Kazuhiro Marumoto, Shin-ichi Kuroda, Richard H. Friend
Publikováno v:
Physical review B. 79(24):245204
Electron spin resonance (ESR) and electron-nuclear double resonance (ENDOR) of photogenerated polarons in poly(9,9-dioctylfluorene) (PFO) and its composite with fullerene $({\text{C}}_{60})$ using variable photoexcitation energy up to 4.1 eV are repo