Large improvement of electron extraction from CdSe quantum dots into a TiO2 thin layer by N3 dye coabsorption

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

47 Scopus Citations
View graph of relations

Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)6994-6998
Journal / PublicationThin Solid Films
Volume516
Issue number20
Publication statusPublished - 30 Aug 2008
Externally publishedYes

Abstract

Extraction of electrons and holes photogenerated in CdSe quantum dots (QD) of 2.3 nm diameter, is monitored by Surface Photovoltage Spectroscopy. The extraction of electrons into a thin TiO2 layer increases five-fold by absorption of N3 dye molecules on top of the QD layer. This process is facilitated by efficient hole extraction from the valence band of the QDs to the ground state of the N3 dye. Our results represent a direct measurement of charge separation in the N3/QD/TiO2 system. © 2007 Elsevier B.V. All rights reserved.

Research Area(s)

  • Dye sensitized solar cells, Electron injection, Quantum dots, Surface photovoltage

Citation Format(s)

Large improvement of electron extraction from CdSe quantum dots into a TiO2 thin layer by N3 dye coabsorption. / Mora-Seró, Iván; Dittrich, Thomas; Susha, Andrei S.; Rogach, Andrey L.; Bisquert, Juan.

In: Thin Solid Films, Vol. 516, No. 20, 30.08.2008, p. 6994-6998.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal