Trap state dynamics in MoS2 nanoclcuters
Article Abstract:
Static and time-resolved experiments were conducted on nanoclusters in ternary inverse micelles, acetonitrile and octane at room temperature to examine the trap-to-trap relaxation and recombination dynamics of photogenerated electron/hole pairs in MoS2. The synthesis in ternary inverse micelles showed that nanoclusters have both shallow and deep traps, which are retained upon extraction into acetonitrile and passivated upon charge neutralization and reextraction into octane. The trap-to-trap relaxation was found to be fast at room temperature, but slows down at 20 K.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Spectroscopy of Eu3+-doped PtS2 nanoclusters
Article Abstract:
PtS2 nanoclusters synthesized in AOT/hexanol/heptane inverse micelles have been studied through electron diffraction and optical spectroscopy. The bulk crystal structural units are made up of platinum atoms in octahedral holes between closed-pack planes of sulfur atoms. It has been observed that the nanoclusters have an indirect band gap of 1.58 eV as compared to O.87 eV for bulk PtS2. Spectroscopic data reveal the location of the Eu3+ ions to be on the nanocluster edges due to AOT/hexanol/heptane synthesis.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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Electron-transfer dynamics in DTDCI/MoS2 and DTDCI/WS2 nanoclusters
Article Abstract:
A study was conducted to analyze the kinetics of forward and reverse electron transfer associated with an organic cyanine dye and semiconductor nanoclusters. Time-resolved absorption measurements were utilized to determine the reverse electron transfer kinetics. The nanoclusters were then synthesized in inverse micelles. Experimental results indicated two components of reverse electron transfer occurring on the tens to hundreds of picoseconds and /10 ns time scales.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
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