Fast electron transfer from PbSe quantum dots to TiO{sub 2}

Journal Article · Wed Dec 04 00:00:00 EST 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4848514· OSTI ID:22261922

Masumoto, Yasuaki; Takagi, Hayato; Umino, Hikaru; Suzumura, Eri ^[1]

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1. Institute of Physics, University of Tsukuba, Tsukuba 305-8571 (Japan)

Fast electron transfer from PbSe quantum dots (QDs) to the porous anatase TiO{sub 2} film was observed in transient absorption, when the lowest unoccupied molecular orbital level of PbSe QDs is higher than that of TiO{sub 2}. In PbSe QDs 2.7nm in diameter linked to the TiO{sub 2} film the bleaching recovery decay shortened to 1ps from 650ps observed in the non-linked PbSe QDs. The electron transfer from the quantum state in small PbSe QDs to TiO{sub 2} takes place fast and efficiently.

• OSTI ID: 22261922
• Journal Information: AIP Conference Proceedings, Vol. 1566, Issue 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ELECTRON TRANSFER
FILMS
LEAD SELENIDES
MOLECULAR ORBITAL METHOD
QUANTUM DOTS
QUANTUM STATES
TITANIUM OXIDES