Results 91 to 100 of about 103,476 (250)

Exciton-plasmon coupling interactions: from principle to applications

Nanophotonics, 2018
The interaction of exciton-plasmon coupling and the conversion of exciton-plasmon-photon have been widely investigated experimentally and theoretically.
Cao En, Lin Weihua, Sun Mengtao, Liang Wenjie, Song Yuzhi   +4 more
doaj   +1 more source

Excitons in quasi-one dimensional organics: Strong correlation approximation

, 1997
An exciton theory for quasi-one dimensional organic materials is developed in the framework of the Su-Schrieffer-Heeger Hamiltonian augmented by short range extended Hubbard interactions.
A. A. Abrikosov, A. A. Ovchinnikov, A. J. Heeger, A. R. Bishop, A. R. Brown, A. Saxena, B. E. Kohler, B. S. Hudson, C. Wu, D. Baeriswyl, D. Baeriswyl, D. Baeriswyl, D. Beljonne, D. Braun, D. Guo, E. Abrahams, E. H. Lieb, F. Guo, G. Gustaffson, H. A. Mizes, H. A. Mizes, H. Hayashi, H. Tanaka, I. I. Ukrainskii, J. Callaway, J. Frenkel, J. H. Burroughes, J. M. Leng, J. W. P. Hsu, M. Berggren, M. Chandross, M. Gailberger, M. J. Holcomb, M. J. Rice, M. Yan, M. Yan, N. F. Colaneri, N. S. Sariciftci, P. E. Peierls, P. Gomes da Costa, P. L. Burn, R. G. Kepler, R. G. Newton, R. H. McKenzie, S. Abe, S. Mazumdar, S. Nakajima, S. R. Phillpot, S. Suhai, U. Rauscher, X. Sun, Z. G. Soos, Z. G. Soos, Z. G. Soos, Z. G. Yu, Z. G. Yu, Z. G. Yu, Z. Shuai, Z. Shuai, Z. Y. Weng   +59 more
core   +1 more source

Sensitized Triplet Exciton Generation in Nanostructured Polymer Scintillators: Toward Improved γ/Neutron Discrimination

Advanced Functional Materials, EarlyView.
Rapid γ/neutron discrimination through PSD is achieved in liquid droplet containing nanostructured polymeric scintillator where a TTA‐active dye is dissolved. The inclusion of a properly selected and dosed sensitizer metalated porphyrin enhances discrimination sensitivity and speed by doubling the density of annihilating triplets and increasing the ...
Luca Pollice, Xueqian Hu, Letizia G. Tedoldi, Andrea Erroi, Davide Rigamonti, Marco Tardocchi, Davide Bortot, Andrea Pola, Christoph Weder, Angelo Monguzzi   +9 more
wiley   +1 more source

Transition Metal Dichalcogenides as Strategy for High Temperature Electron-Hole Superfluidity

Condensed Matter, 2020
Condensation of spatially indirect excitons, with the electrons and holes confined in two separate layers, has recently been observed in two different double layer heterostructures.
Sara Conti, David Neilson, François M. Peeters, Andrea Perali   +3 more
doaj   +1 more source

Suppressing Diffusion-Mediated Exciton Annihilation in 2D Semiconductors Using the Dielectric Environment

, 2018
Atomically thin semiconductors such as monolayer MoS2 and WS2 exhibit nonlinear exciton-exciton annihilation at notably low excitation densities (below ~10 excitons/um2 in MoS2).
Ahn, Geun Ho, Amani, Matin, Goodman, Aaron J., Javey, Ali, Lien, Der-Hsien, Spiegel, Leo L., Tisdale, William A., Willard, Adam P.   +7 more
core  

Coherent Exciton Lasing in ZnSe/ZnCdSe Quantum Wells?

, 1995
A new mechanism for exciton lasing in ZnSe/ZnCdSe quantum wells is proposed. Lasing, occurring below the lowest exciton line, may be associated with a BCS-like condensed (coherent) exciton state.
Comte, Ding,, Ding,, Ding,, E. Runge, H. Ehrenreich, M. E. Flatté, Young,   +7 more
core   +1 more source

A Mechanistic Blueprint for Fast, High‐Yield Green Scintillators Using Conjugated Polymer–Nanocrystal Composites

Advanced Functional Materials, EarlyView.
Conjugated polymer–nanocrystal composites are investigated to develop fast, high‐yield green scintillators. The polymer F8BT enables efficient, ultrafast emission, while blends with non‐emitting HfO2 nanocrystals and luminescent CdZnS/ZnS quantum dots reveal distinct sensitization mechanisms.
Chenger Wang, Emanuele Mazzola, Andrea Fratelli, Matteo L. Zaffalon, Francesco Bruni, Francesco Carulli, Xiaohe Zhou, Saptarshi Chakraborty, Leonardo Poletti, Luca Cappelletti, Francesco Meinardi, Francesca Rossi, Luca Gironi, Sergio Brovelli   +13 more
wiley   +1 more source

Optically accessible long-lived electronic biexcitons at room temperature in strongly coupled H- aggregates

Nature Communications
Photon absorption is the first process in light harvesting. Upon absorption, the photon redistributes electrons in the materials to create a Coulombically bound electron-hole pair called an exciton. The exciton subsequently separates into free charges to
Siddhartha Sohoni, Indranil Ghosh, Geoffrey T. Nash, Claire A. Jones, Lawson T. Lloyd, Beiye C. Li, Karen L. Ji, Zitong Wang, Wenbin Lin, Gregory S. Engel   +9 more
doaj   +1 more source

Observation of Two‐Photon Resonant Raman Scattering via the Biexciton Level in Two‐Dimensional Halide Perovskite (C6H5C2H4NH3)2PbI4

Advanced Functional Materials, EarlyView.
Efficient two‐photon resonant Raman scattering (TRRS) is observed in the layered perovskite (PEA)2PbI4, with the biexciton level acting as an intermediate state. TRRS undergoes two‐photon frequency shift upon input frequency tuning, persists up to 90 K, and shows clear threshold behavior and polarization selection rules.
Seung Han Shin, Seo Hyun Nam, Jeehong Park, Dong Gyu Lee, Jeong Bin Cho, Tae Jung Kim, Yeonjin Yi, Joon Ik Jang   +7 more
wiley   +1 more source

Theory of optical spectra of polar quantum wells: Temperature effects

, 2001
Theoretical and numerical calculations of the optical absorption spectra of excitons interacting with longitudinal-optical phonons in quasi-2D polar semiconductors are presented.
B. Gerlach, C. D. Poweleit, D. S. Chu, F. J. Rodríguez, G. D. Mahan, H. Castella, H. Fröhlich, H. Haken, H. Haug, J. Ding, J. Hermanson, J. Sak, K. Shindo, M. E. Flatte, M. O’Neill, M. Umlauff, Miyajima, N. Donlagic, N. T. Pelekanos, N. T. Pelekanos, N. T. Pelekanos, R. Cingolani, R. Zheng, R. Zimmermann, S. D. Mahanti, S. Das Sarma, V. Pellegrini, Y. Toyozawa, Z. Koinov   +28 more
core   +1 more source