Ultrafast charge dynamics in CuInS2 nanocrystal quantum dots

作者：Cadirci Musa; Masala Ombretta; Pickett Nigel; Binks David^*

来源：Chemical Physics, 2014, 438: 60-65.

DOI：10.1016/j.chemphys.2014.05.001

• Charge dynamics
• Quantum dots
• Femtosecond transient absorption
• Spectroscopy
• CuInS2 nanocrystals

Colloidal CuInS2 quantum dots have been synthesised and characterised using absorption and photoluminescence spectroscopy, X-ray diffraction, inductive-coupled plasma atomic emission spectroscopy and thermogravimetric analysis. The ultrafast charge dynamics of these dots have been studied using transient absorption spectroscopy. Cooling of hot photo-generated carriers to the band edge occurred within 3-5 ps. Significant de-population of the band-edge was found to occur on a sub-nanosecond time-scale, and was attributed to hole-trapping.

• 出版日期2014-6-25