Photoinduced interaction of CdSe quantum dot with coumarins

El‐Kemary, Maged; Gaber, Mohamed; El-Sayed, Yusif S.; Gheat, Youssef

doi:10.1016/j.jlumin.2014.10.063

Cited by 14 publications

(1 citation statement)

References 34 publications

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“…Кроме того, в комплексах подобных полупроводниковых наночастиц с органическими молекулами может наблюдаться перенос заряда между ними при фотовозбуждении. Такие системы, проявляющие перенос заряда при фотовозбуждении, могут использоваться при создании фотоэлектрических преобразователей, таких, например, как солнечные элементы [12][13][14][15][16]. Однако почти не проводились обширные теоретические исследования этого процесса.…”

Section: Introductionunclassified

Calculation of electronic transitions in CdS clusters associated with coumarin dye

Aldongarov¹,

Assilbekova²,

Irgibaeva³

2019

bulphys

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Complexes of nanocrystalline semiconductors with organic dye molecules are critical components of two main types of third-generation solar cells: dye-sensitized solar cells and thin-film cells of a nanocrystal. These devices rely on efficient photo-induced charge transfer across the nanostructured organic-inorganic interface. To estimate the charge transfer during photoexcitations, the coumarin 153 (C153) molecule and its complexes with the [C153-Cd 4 S 1 ] 6+ and [C153-Cd 13 S 4 ] 18+ quantum dot clusters were considered. The electronic absorption spectrum of the quantum dot -coumarin 153 complexes was calculated by the time-dependent density functional TD DFT and the analysis of molecular orbitals involved in intense transitions was performed. The data obtained show the absence of intense charge transfer bands and the appearance of long wavelength bands, which indicate an increase in the dipole moment of the complex.

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