Radiative recombination and vibronic relaxation in σ-delocalized silicon-backbone-network polymers: Energy thermalization in poly(n-hexylsilyne)

Autor:	T. W. Weidman, William L. Wilson
Rok vydání:	1993
Předmět:	Photoexcitation symbols.namesake Delocalized electron Materials science Condensed matter physics Stokes shift symbols Time evolution Vibronic spectroscopy Relaxation (physics) Spontaneous emission Nanosecond Molecular physics
Zdroj:	Physical Review B. 48:2169-2174
ISSN:	1095-3795 0163-1829
DOI:	10.1103/physrevb.48.2169
Popis:	The nature of ultrafast energy dissipation in poly(n-hexylsilyne), a prototypical σ-delocalized alkylsilicon-network polymer is reported. This disordered, silicon-backbone material exhibits strong near-UV to visible band-edge absorption and a high quantum yield of visible emission. The time evolution of the emission band is studied over four decades of time using time-resolved luminescence as a probe. The data indicate that while there is an «intrinsic» Stokes shift after photoexcitation due to kinetic-energy relaxation, (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3517ed8ca67891dc870788627d3ad7de https://doi.org/10.1103/physrevb.48.2169 Zobrazit plný text záznamu