the creation of an increase in energy in atoms, molecules or ions caused by the absorption of a photon
Examples of 'photoexcitation' in a sentence
photoexcitation
The photoexcitation process tunes the current transport mechanisms.
Najla M. Khusayfan, Hazem K. Khanfar 2018, 'Optoelectronic properties of the InSe/Ga2S3 interfaces', Results in Physicshttp://www.sciencedirect.com/science/article/pii/S2211379718307502. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The method reveals correlations between excitation energy and excited state vibrational structure following photoexcitation.
Ogilvie J.P., Wilcox D.E. 2013, 'Two-dimensional electronic femtosecond stimulated Raman spectroscopy', EPJ Web of Conferenceshttp://dx.doi.org/10.1051/epjconf/20134105034. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Rydberg atoms can be created from photoexcitation of molecules using intense ultrafast laser pulses.
Wenbin Zhang, Xiaochun Gong, Hui Li, Peifen Lu, Fenghao Sun, Qinying Ji, Kang Lin,Junyang Ma, Hanxiao Li, Junjie Qiang, Feng He, Jian Wu 2019, 'Electron-nuclear correlated multiphoton-route to Rydberg fragments of molecules',Nature Communicationshttp://link.springer.com/article/10.1038/s41467-019-08700-5. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Despite intensive research on photoexcited molecules, stereocontrol of direct bond formation upon photoexcitation remains limited.
Xiaoqiang Huang, Xinyao Li, Xiulan Xie, Klaus Harms, Radostan Riedel, Eric Meggers 2017, 'Catalytic asymmetric synthesis of a nitrogen heterocycle through stereocontrolleddirect photoreaction from electronically excited state', Nature Communicationshttp://link.springer.com/article/10.1038/s41467-017-02148-1. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In bulk heterojunction polymer solar cells, external photoexcitation results in localized excitons in the polymer chain.
Weikang Chen, Deyao Jiang, Renai Chen, Sheng Li, Thomas F. George 2016, 'Intrinsic Delocalization during the Decay of Excitons in Polymeric Solar Cells', Polymershttp://www.mdpi.com/2073-4360/8/12/414. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This result demonstrates the potential of this technique for clarifying the initial stage of the surface carrier dynamics after photoexcitation.
Sogawa T., Tateno K., Gotoh H., Nishikawa T., Nakano H., Kato K., Tsunoi T., OguriK. 2013, 'Surface Carrier Dynamics on Semiconductor Studied with Femtosecond Core-Level PhotoelectronSpectroscopy Using Extreme Ultraviolet High-Order Harmonic Source', EPJ Web of Conferenceshttp://dx.doi.org/10.1051/epjconf/20134104017. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Here, the authors report femtosecond dynamics in prototypical acetylacetone, by pump-probe photoexcitation-photoemissionexperiments and static and dynamics calculations.
R. J. Squibb, M. Sapunar, A. Ponzi, R. Richter, A. Kivimäki, O. Plekan, P. Finetti,N. Sisourat, V. Zhaunerchyk, T. Marchenko, L. Journel, R. Guillemin, R. Cucini, M.Coreno, C. Grazioli, M. Di Fraia, C. Callegari, K. C. Prince, P. Decleva, M. Simon,J. H. D. Eland, N. Došlić, R. Feifel, M. N. Piancastelli 2018, 'Acetylacetone photodynamics at a seeded free-electron laser', Nature Communicationshttp://link.springer.com/article/10.1038/s41467-017-02478-0. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The influence of semiconductor particle concentration and photoexcitation on the electrical and ferroelectric properties of ferroelectric-semiconductor-composites was investigated.
Sebastian Engel, David Smykalla, Bernd Ploss, Stephan Gräf, Frank A. Müller 2017, 'Effect of (Cd:Zn)S Particle Concentration and Photoexcitation on the Electrical andFerroelectric Properties of (Cd:Zn)S/P(VDF-TrFE) Composite Films', Polymershttps://www.mdpi.com/2073-4360/9/12/650. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)