Zobrazeno 1 - 10
of 100
pro vyhledávání: '"L. Michael Hayden"'
Publikováno v:
The Journal of Physical Chemistry C. 125:8712-8718
We investigate the effect of molecular oxygen on the photoconductivity of monolayer MoS2 via broad-band time-resolved terahertz spectroscopy. We observe that the photoconductivity of monolayer MoS2...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3cdaa5b42ec2d434b2f4af7c4b2cbc0
https://doi.org/10.1021/acs.jpcc.1c01550
https://doi.org/10.1021/acs.jpcc.1c01550
Autor:
Kathleen M. McCreary, Paul D. Cunningham, Berend T. Jonker, L. Michael Hayden, Jon K. Gustafson
Publikováno v:
The Journal of Physical Chemistry C. 123:30676-30683
We report on the ultrafast carrier dynamics of monolayer WS2 using broad-band time-resolved terahertz spectroscopy (TRTS). We find that upon photoexcitation, there is an increase in the conductivit...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aaffff80e9e61954c1eaa9ad757dc1ca
https://doi.org/10.1021/acs.jpcc.9b08483
https://doi.org/10.1021/acs.jpcc.9b08483
Autor:
Paul D. Cunningham, Kathleen M. McCreary, Marc Currie, Berend T. Jonker, L. Michael Hayden, Aubrey T. Hanbicki
Publikováno v:
The Journal of Physical Chemistry C. 120:5819-5826
There is keen interest in monolayer transition metal dichalcogenide films for a variety of optoelectronic applications due to their direct band gap and fast carrier dynamics. However, the mechanisms dominating their carrier dynamics are poorly unders
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b7861bf59c7e7ab46dc059516e37b48
https://doi.org/10.1021/acs.jpcc.6b00647
https://doi.org/10.1021/acs.jpcc.6b00647
Autor:
L. Michael Hayden, Jon K. Gustafson
Publikováno v:
Frontiers in Optics / Laser Science.
We investigate the ultrafast dynamics of photogenerated charge carriers in the two-dimensional material WS2 via time-resolved terahertz spectroscopy. We report on the behavior of excitons, trions, and unbound electrons/holes in this material.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd1e521a09c5067e4e63a4d0e4bd46dc
https://doi.org/10.1364/fio.2018.jw4a.65
https://doi.org/10.1364/fio.2018.jw4a.65
Publikováno v:
The Journal of Physical Chemistry B. 113:15427-15432
We report charge carrier dynamics in solid films of a series of metalated polymers based on Pt- and 4,7-di-2'-thienyl-2,1,3,-benzothiadiazole or 4,7-di-2'-thienothienyl-2,1,3,-benzothiadiazole upon photoexcitation of the pi-pi* transition using optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbdef7d52576d826523f2ecc45a6f201
https://doi.org/10.1021/jp906454g
https://doi.org/10.1021/jp906454g
Autor:
Paul D. Cunningham, L. Michael Hayden
Publikováno v:
The Journal of Physical Chemistry C. 112:7928-7935
We report subpicosecond carrier dynamics in photoexcited solid films of regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) and a blend of P3HT/[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) using optical-pump terahertz-probe spectroscopy for exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86591c105c16f561f0cfffe379f4df4b
https://doi.org/10.1021/jp711827g
https://doi.org/10.1021/jp711827g
Publikováno v:
Journal of Nanoelectronics and Optoelectronics. 2:58-76
We review recent research using organic materials for generation and detection of broadband terahertz radiation (0.3 THz−30 THz). The main focus is on amorphous electrooptic (EO) polymers, with semiconducting polymers, molecular salt EO crystals, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e56ca3a77841820d430e30219ea0250
https://doi.org/10.1166/jno.2007.005
https://doi.org/10.1166/jno.2007.005
Publikováno v:
The Journal of Physical Chemistry B. 108:8515-8522
We present a method for producing electrooptic (EO) polymer films with EO coefficients 40−50 pm/V at 785 nm which are suitable for use as emitters and sensors of THz radiation. Direct comparison with ZnTe shows that our EO polymers are more efficie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ccd437265e8bf484df5d6cf4ed08430
https://doi.org/10.1021/jp036644l
https://doi.org/10.1021/jp036644l
Autor:
Meng He, Joey French, Warren N. Herman, Robert J. Twieg, L. Michael Hayden, Peter Lindahl, Megan R. Leahy, Alexander M. Sinyukov
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 41:2492-2500
The synthesis and nonlinear optical characterization of new electrooptic (EO) materials useful for terahertz (THz) applications is presented. Semiempirical calculations were used to guide the development of a series of chromophores on the basis of 2-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0954233e94da62cda8ec78c430fdb561
https://doi.org/10.1002/polb.10650
https://doi.org/10.1002/polb.10650
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 39:895-900
Second harmonic generation (SHG) was used to measure the temperature dependence of the reorientation activation volume (ΔV*) of a syndioregic main-chain hydrazone (SMCH) nonlinear optical polymer. The decay of the SHG signal from poled films of SMCH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf38ab461c4127e995d65f41c97c78d8
https://doi.org/10.1002/polb.1063
https://doi.org/10.1002/polb.1063